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WO2022054042A1 - A face shield condensation reduction device and method - Google Patents

A face shield condensation reduction device and method Download PDF

Info

Publication number
WO2022054042A1
WO2022054042A1 PCT/IL2021/051071 IL2021051071W WO2022054042A1 WO 2022054042 A1 WO2022054042 A1 WO 2022054042A1 IL 2021051071 W IL2021051071 W IL 2021051071W WO 2022054042 A1 WO2022054042 A1 WO 2022054042A1
Authority
WO
WIPO (PCT)
Prior art keywords
face shield
visor
assembly
power source
dehumidification assembly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/IL2021/051071
Other languages
French (fr)
Inventor
Eran SHAFFERMAN
Yair SADAN
Elder ARBEL
Valery DAVIDOV
Dor KEIZMAN
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TEL-HASHOMER - MEDICAL RESEARCH INFRASTRUCTURE AND SERVICES Ltd
Tel HaShomer Medical Research Infrastructure and Services Ltd
Original Assignee
TEL-HASHOMER - MEDICAL RESEARCH INFRASTRUCTURE AND SERVICES Ltd
Tel HaShomer Medical Research Infrastructure and Services Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by TEL-HASHOMER - MEDICAL RESEARCH INFRASTRUCTURE AND SERVICES Ltd, Tel HaShomer Medical Research Infrastructure and Services Ltd filed Critical TEL-HASHOMER - MEDICAL RESEARCH INFRASTRUCTURE AND SERVICES Ltd
Publication of WO2022054042A1 publication Critical patent/WO2022054042A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/05Splash shields for protection of the surgeon, e.g. splash guards connected to the apparatus
    • AHUMAN NECESSITIES
    • A41WEARING APPAREL
    • A41DOUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D13/00Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
    • A41D13/05Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
    • A41D13/11Protective face masks, e.g. for surgical use, or for use in foul atmospheres
    • A41D13/1184Protective face masks, e.g. for surgical use, or for use in foul atmospheres with protection for the eyes, e.g. using shield or visor
    • AHUMAN NECESSITIES
    • A42HEADWEAR
    • A42BHATS; HEAD COVERINGS
    • A42B3/00Helmets; Helmet covers ; Other protective head coverings
    • A42B3/04Parts, details or accessories of helmets
    • A42B3/18Face protection devices
    • A42B3/22Visors
    • A42B3/24Visors with means for avoiding fogging or misting
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/06Measuring instruments not otherwise provided for

Definitions

  • the present invention relates to a face shield in general and to a condensation reduction device configured to be used in conjunction with a face shield in particular, and further configured to reduce condensation occurring on a face shield visor and hence prevent visibility reduction and operational risks.
  • a face shield is a common personal protective equipment, aimed to protect the user's entire face (or part thereof) from hazards such as flying objects and road debris, chemical splashes in laboratories or industry, or potentially infectious biological droplets that may be present in medical or laboratory environments or in other infectious environments.
  • Face shields may be used in surgical operating rooms, medical emergency rooms, research or diagnosis laboratories, by civilians in case of an epidemic, etc. Face shields are intended primarily to protect the face of the user from spray of, for example, blood, saliva, chemicals, or any other potentially harmful substance.
  • the necessity to protect the face, respiratory track and eyes has become even more acute with the advancement of infectious diseases where the potential for transmission from one person to another is substantial.
  • Medical staff called upon to treat patients are especially exposed to airborne particles, thus protection from spray emanating, for instance, from a patient or a hazardous material is highly important.
  • the eyes, nose and mouth include regions of thin and penetrable membranes, substantially the majority of the face area requires appropriate protection from airborne contaminants such as aerosol, particulates or droplets.
  • face shields are made to substantially cover the face of the user, and thus, are susceptible to moisture and humidity emanating from the user's organs and orifices in mouth, nose or skin.
  • said moisture condenses, inter alia, on the inner/outer side of the face mask visor.
  • Such condensation may result in visor fogging which may require frequent cleaning/wiping of the visor from the inside and/or outside to avoid visibility reduction. Said need to clean/wipe the visor also poses a potential risk of harmful exposure to the user.
  • Face shields may have certain advantages over other respiratory protection means such as cloth face masks, for example, face shields are easier to disinfect than cloth masks, and present less inconvenience to breathe while wearing. While a breathing mask only covers the nose, cheeks, and mouth, face shields may also prevent the users from touching much, if not all, of their face. Another advantage to transparent face shields is that lips movement is visible to colleagues, reducing the propensity to remove the protection means while speaking.
  • CoV-2 pandemic, the virus that caused coronavirus disease 2019 (COVID-19).
  • COVID-19 coronavirus disease 2019
  • the COVID-19 virus is transmitted through close contact, droplets, and possibly airborne transmission.
  • the persons most at risk of getting infected are those who are in close contact with a COVID-19 patient or care for COVID- 19 patients.
  • the present invention provides a face shield system that comprises a condensation reduction device configured to provide a user with a face shield not susceptible to vapor condensation accumulating upon the face shield visor, which in turn may cause a significant visibility reduction and potential health hazards.
  • the present invention further provides a condensation reduction device configured to be attached to an already commercially available face shield in order to provide a user with a face shield not susceptible to vapor condensation accumulating upon the face shield visor, which in turn may cause a significant visibility reduction and potential health hazards.
  • a condensation reduction device comprising a dehumidification assembly configured to be coupled with a face shield and a power source configured to be coupled with said face shield, wherein the power source is configured to enable the operation of the dehumidification assembly, which in turn is configured to reduce the humidity levels in the vicinity of the surface of the face shield visor.
  • the dehumidification assembly is configured to be detachably attached to the face shield.
  • the power source is configured to be detachably attached to the face shield.
  • the dehumidification assembly further comprises filtering means.
  • the dehumidification assembly is a propeller assembly configured to create an air-flow.
  • a casing manifold is coupled with a propeller component and configured to divert air-flow produced by the propeller component towards the surface of the face shield visor.
  • the propeller assembly further comprises at least one conduit configured to distribute the produced air-flow in vicinity of the surface of the face shield visor.
  • At least one conduit is configured to divert the produced air-flow toward a particular area of the surface of the face shield visor, wherein said particular area may be is in the vicinity of a user’s eyes or mouth.
  • the conduit is flexible and configured to be inserted between the user’s head and a head mount component of the face shield.
  • the dehumidification assembly and/or the power source are a commercial off-the-shelf products (COTS).
  • COTS commercial off-the-shelf products
  • the power source is a power reservoir.
  • the power reservoir is a rechargeable battery. According to some embodiments, the power reservoir is a USB type energy bank.
  • the power source is renewed by solar energy.
  • the solar energy is obtained from solar cells mounted on the face shield or located on the user’s attire.
  • the power source is configured to be distally positioned to the face shield visor while the dehumidification assembly is configured to be proximally positioned to the face shield visor.
  • the mass of the power source substantially provides a counter weight to the mass of the dehumidification assembly.
  • the power reservoir is integrated within the casing of the dehumidification assembly.
  • the condensation reduction device further comprising manual or automatic operation means.
  • the automatic operation means utilize humidity sensing means.
  • a face shield visor condensation reduction system comprising a head mount component; a visor; a dehumidification assembly and a power source, wherein the power source is configured to power the dehumidification assembly and the dehumidification assembly is configured to reduce the humidity levels in the vicinity of the surface of the face shield visor.
  • the dehumidification assembly is configured to be detachably attached to the head mount component.
  • the power source is configured to be detachably attached to the head mount component.
  • the head mount component further comprises an opening configured to allow an air-flow produced by the propeller assembly to reach the surface of the face shield visor.
  • the propeller assembly casing is configured to divert air-flow produced by a propeller component towards the surface of the face shield visor.
  • the face shield visor condensation reduction system further comprising manual or automatic operation means.
  • the automatic operation means utilize humidity sensing means.
  • a method for using a face shield visor condensation reduction system comprising the steps of wearing a face shield comprising a head mount component, a visor and a condensation reduction device and activating the condensation reduction device in order to reduce the humidity levels in the vicinity of the surface of the face shield visor, wherein the operation of the condensation reduction device reduces the occurrence of condensation upon the surface of the face shield visor.
  • Fig. 1A constitutes a schematic perspective view of a condensation reduction device, according to some embodiments of the invention.
  • Figs. IB, and 1C constitute a schematic perspective view of a face shield equipped with a condensation reduction device, according to some embodiments of the invention.
  • Figs. 2A, 2B and 2C constitute a front, rear and side perspective view of a face shield equipped with a condensation reduction device, according to some embodiments of the invention.
  • Fig- 3 constitutes an exploded view of a condensation reduction device, according to some embodiments of the invention.
  • Fig- 4 constitutes a side perspective view of a condensation reduction device, according to some embodiments of the invention.
  • Figs. 5A, 5B, 5C and 5D constitute a rear, side and front perspective view of a condensation reduction device and a face shield coupled with a condensation reduction device, according to some embodiments of the invention.
  • Figs. 6A, and 6B constitute a schematic perspective view of a face shield coupled with a condensation reduction device, according to some embodiments of the invention.
  • Fig. 7 constitutes a schematic perspective view of a face shield coupled with a condensation reduction device, according to some embodiments of the invention.
  • the terms “plurality” and “a plurality” as used herein may include, for example, “multiple” or “two or more”.
  • the terms “plurality” or “a plurality” may be used throughout the specification to describe two or more components, devices, elements, units, parameters, or the like.
  • the method embodiments described herein are not constrained to a particular order or sequence. Additionally, some of the described method embodiments or elements thereof can occur or be performed simultaneously, at the same point in time, or concurrently.
  • COTS commercial off-the-shelf' or "COTS”, as used herein, refers to products that can be commercially purveyed and used "as-is”. COTS products are designed to be easily installed and to compatibly interoperate with existing system components while having relatively low costs.
  • dehumidification assembly refers to a device, technology or substance capable of reducing humidity levels in its vicinity or proximity.
  • a dehumidification assembly may comprise of, for example, a fan or ventilator, an air pump, an air conditioning system, a desiccant or any other humidity control device, technology or substance.
  • propels fluid refers to a component which propels fluid
  • a propeller device may comprise an inlet in order to receive incoming fluid and an outlet in order to emit said fluid out.
  • the term “propeller” as used herein may also refer to a known air pump structure that may comprise an oscillating coil as a main motor, and a diaphragm configured to suck and pump air through the outlet while undergoing expansion and contraction phases.
  • Face shields are essential protection equipment designed to protect the user from air-born particles or airborne droplets of harmful substances. Face shields are susceptible to moisture emanating from the user’s mouth or nose and condenses upon the inner side of the visor. Such condensed fogging may require constant wiping or cleaning of the face shield to avoid visibility reduction that in turn, may lead to operational limitations that may have harmful consequences.
  • a condensation reduction device is configured to prevent the accumulation of condensed humidity upon a face shield visor. This can be achieved, for example, by using a simple propeller to ventilate the inner or outer surface of the face shield visor or by any other means of humidity control mechanism or substance.
  • the condensation reduction device may be assembled from light weight commercial of the shelf components and may be combined with a designated face shield, or configured to be attached to any generic face shield available on the market.
  • FIGS. 1A, IB and 1C which constitute a schematic perspective view of a condensation reduction device 30 and face shield 10, according to some embodiments of the invention.
  • propeller assembly 100 may be connected to a power reservoir 108 through wire 106 and may be operated by operation means 104.
  • propeller assembly 100 may be a fan or a ventilator configured to propel air through channel 102.
  • the power reservoir may be any kind of battery, such as rechargeable USB power bank, solar charged battery pack, rechargeable batteries, single-use batteries, etc.
  • the power reservoir 108 may be integrated with the propeller assembly 100 or may be a separate component.
  • propeller assembly 100 may be configured to be coupled to face shield 10, for example, propeller assembly 100 may be configured to be coupled to a head mount 22 that forms a part of the face shield 10.
  • head mount 22 may be, for example, an arch headband, a cloth mount, etc. and may be made from woven material, resilient material or any other known material or configuration able to be held by a user’s head and carry propeller assembly 100.
  • connectors 26 may form a part of head mount 22 and may be used to grasp power reservoir 108.
  • visor 24 may be formed from a flat sheet of flexible transparent light weight material and be configured to be coupled to head mount 22 in order to protect a user’s face.
  • the visor 24 may have an inner side facing the user’s face and an outer side facing the outside environment.
  • propeller assembly 100 may be configured to be coupled to a designated opening 28 formed on the head mount 22, such that air emitted from the propeller assembly 100 is released proximate to or in the vicinity of the inner surface of the visor 24.
  • activating the propeller assembly 100 located in the aforementioned configuration may reduce the relative humidity level in proximity to or vicinity of the inner surface of the visor 24 and in turn may reduce the condensation caused by the humid breath of the user, user's body sweat or by any other humidity source, and later accumulated upon the inner surface of the visor 24.
  • propeller assembly 100 and power reservoir 108 may be COTS products that may need relatively few adjustments to be compatible with each other and form the condensation reduction device 30.
  • FIGS. 2A, 2B and 2C constitute a front, rear and side perspective view of a face shield 10 coupled to a condensation reduction device 30, according to some embodiments of the invention.
  • face shield 10 is configured to be held upon the user’s head using head mount 22
  • propeller assembly 100 is configured to be coupled to the front section of head mount 22
  • power reservoir 108 is configured to be coupled to the rear section of head mount 22. Said configuration may thus provide a counter weight to both propeller assembly 100 and power reservoir 108.
  • propeller assembly 100 may be connected to power reservoir 108 through wire 106 wherein said wire is configured to be sprawled over or around the user’s head.
  • wire 106 may be configured with attachment means that enable attachment between wire 106 and head mount 22, for example, wire 106 may be configured to be attached along the perimeter of head mount 22 using said attachment means.
  • wire 106 may be an integral part of the structure forming head mount 22, for example, by passing through woven material or a polymer forming head mount 22.
  • condensation reduction device 30 may be operated by operation means 104 that may be a switch, button, a touch surface, dial, knob etc.
  • operation means 104 may be manually operated by the user, for example, when the user detects a condensation forming upon the visor 24, he/she can activate the condensation reduction device 30 in order to clear visor 24.
  • operation means 104 may be operated automatically, for example, the condensation reduction device 30 may further comprise sensing means such as a humidity sensor (not shown), configured to detect humidity level in proximity to the condensation reduction device 30 or in the vicinity of user's eyes/mouth. When measured humidity level exceeds a certain threshold, the result may be the activating of the condensation reduction device 30 and vice versa.
  • power reservoir 108 may be integrated within propeller assembly 100, for example, power reservoir 108 may be a rechargeable/non- rechargeable battery, occupying a designated chamber within the casing of propeller assembly 100.
  • propeller assembly 100 may comprise of a front case member 202 and a rear case member 206 configured to encase propeller component 204 that may be a ventilator, fan, pump, etc.
  • propeller component 204 may be a ventilator, fan, pump, etc.
  • coupled case members 202 and 206 create a single manifold that further comprises channel 102.
  • channel 102 may be formed from an extension of one or more case members 202 or 206.
  • propeller assembly 100 may be a COTS product that may need relatively few adjustments to form a part of the condensation reduction device 30.
  • filter 208 may be installed upon the inlet/outlet of propeller assembly 100 in order to provide filtration to the air entering/exiting propeller assembly 100.
  • said filtration provided by the filter 208 may capture airborne chemicals or biological particles such as viruses or bacteria, hence, filter 208 may provide the user with enhanced protection against infectious diseases or harmful substances.
  • FIGS. 5A 5B, 5C, and 5D constitute a rear, side and front perspective view of a condensation reduction device 30 and a front view of face shield 10 coupled with condensation reduction device 30, according to some embodiments of the invention.
  • propeller assembly 100 may be compatible to be attached to a head mount 22 of a generic face shield 10.
  • attachment means 112 may be, for example, double-sided ducttape, a magnet, a Velcro strip or any other adhesive or connective material attached to propeller assembly 100 and configured to be attached to a head mount 22 of a generic face shield 10.
  • the propeller assembly 100 may comprise a flexible conduit 110 configured to allow air-flow from the coupled propeller assembly 100 and along the inner/outer surface of visor 24, wherein such an air-flow reduces the condensation that may occur due to high-air humidity or due to the humid breath of the user and accumulate upon the inner/outer surface of the visor 24.
  • flexible conduit 110 is configured to divert the produced air-flow toward a particular area of the face shield visor 24, for example, the user may bend and fix conduit 110 in a desired direction, for example, the user may bend conduit 110 such that air-flow will be emitted toward the visor 24 area in front of the user’s eyes, designated line of sight, mouth, etc.
  • power reservoir 108 may be a separate component connected to propeller assembly 100 through wire 106 and may be configured with similar attachment means 112 in order to enable attachment to the head mount 22 of a generic face shield 10 as previously disclosed.
  • power reservoir 108 may be integrated within the casing that forms propeller assembly 100, for example, power reservoir 108 may be a rechargeable/non-rechargeable battery, occupying a designated chamber within the casing of propeller assembly 100.
  • conduit 110 may form a part of propeller assembly 100 and be configured to emit the air-flow generated by the propeller component 204 (shown in FIG. 3).
  • conduit 110 may be a flexible tube that may be bent and be fixed in a desired direction.
  • a user while installing the propeller assembly 100 upon the head mount 22 of a generic face shield 10, a user may place conduit 110 between the head mount 22 and user's head, such that the air-flow emitted from the conduit 110 will blow along the inner surface of visor 24.
  • any attachment arrangement that enables propeller assembly 100 and/or power reservoir 108 to be attached to head mount 22 and any configuration of the conduit 110 are possible in order to achieve a configuration wherein air-flow produced by the propeller assembly 100 flows along the inner/outer surface of visor 24.
  • the air-flow output configured to be emitted from the propeller assembly 100 is relatively low and hence, does not create discomfort to the user as a result of air-flowing next to said user's face.
  • propeller assembly 100 may be configured to be attached by attachment means 112, to the rear part of head mount 22, in this arrangement, conduit 110 may have sufficient length to reach the front part of head mount 22 in order to emit an air-flow along the inner/outer surface of visor 24.
  • propeller assembly 100 may be configured to be attached by attachment means 112 to the side part of the head mount 22. In this arrangement, conduit 110 may have sufficient length to reach the front part of head mount 22 in order to emit air flow along the inner/outer surface of visor 24.
  • conduit 110 may comprise further attachment means (not shown) to be attached along the perimeter of head mount 22, for example, conduit
  • conduit 110 may be attached by double-sided duct-tape, a magnet, a Velcro strip or any other adhesive technic in order to couple to head mount 22 and release an air-flow along the inner side of visor 24.
  • conduit 110 may be an integral part of the structure forming head mount 22, for example, by passing through woven material or a polymer forming head mount 22.
  • condensation reduction device 30 may comprise or be coupled with a solar cell sheet 114 configured to produce electricity needed for activating propeller assembly 100.
  • the solar cell sheet 114 may form a part of propeller assembly 100, or be a separate component that can be mounted upon the face shield 10 or upon the user’s body/attire.
  • electricity produced by the solar cell sheet 114 may be stored in the power reservoir 108, hence providing condensation reduction device 30 with constant energy availability even when solar radiation intensity is relatively low.
  • solar cell sheet 114 may be a COTS product that may need relatively few adjustments to form a part of the condensation reduction device 30.

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  • General Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Surgery (AREA)
  • Molecular Biology (AREA)
  • Pathology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Oral & Maxillofacial Surgery (AREA)
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  • Professional, Industrial, Or Sporting Protective Garments (AREA)

Abstract

A face shield system that comprises a condensation reduction device configured to provide a user with a face shield not susceptible to vapor condensation accumulating upon the face shield visor which may cause a significant visibility reduction and potential health hazards.

Description

A FACE SHIELD CONDENSATION REDUCTION DEVICE AND
METHOD
FIELD OF THE INVENTION
The present invention relates to a face shield in general and to a condensation reduction device configured to be used in conjunction with a face shield in particular, and further configured to reduce condensation occurring on a face shield visor and hence prevent visibility reduction and operational risks.
BACKGROUND OF THE INVENTION
A face shield is a common personal protective equipment, aimed to protect the user's entire face (or part thereof) from hazards such as flying objects and road debris, chemical splashes in laboratories or industry, or potentially infectious biological droplets that may be present in medical or laboratory environments or in other infectious environments.
Face shields may be used in surgical operating rooms, medical emergency rooms, research or diagnosis laboratories, by civilians in case of an epidemic, etc. Face shields are intended primarily to protect the face of the user from spray of, for example, blood, saliva, chemicals, or any other potentially harmful substance. The necessity to protect the face, respiratory track and eyes has become even more acute with the advancement of infectious diseases where the potential for transmission from one person to another is substantial. Medical staff called upon to treat patients are especially exposed to airborne particles, thus protection from spray emanating, for instance, from a patient or a hazardous material is highly important. Furthermore, because the eyes, nose and mouth include regions of thin and penetrable membranes, substantially the majority of the face area requires appropriate protection from airborne contaminants such as aerosol, particulates or droplets.
In many cases face shields are made to substantially cover the face of the user, and thus, are susceptible to moisture and humidity emanating from the user's organs and orifices in mouth, nose or skin. In many cases, in absence of efficient outlet, said moisture condenses, inter alia, on the inner/outer side of the face mask visor. Such condensation may result in visor fogging which may require frequent cleaning/wiping of the visor from the inside and/or outside to avoid visibility reduction. Said need to clean/wipe the visor also poses a potential risk of harmful exposure to the user.
Face shields may have certain advantages over other respiratory protection means such as cloth face masks, for example, face shields are easier to disinfect than cloth masks, and present less inconvenience to breathe while wearing. While a breathing mask only covers the nose, cheeks, and mouth, face shields may also prevent the users from touching much, if not all, of their face. Another advantage to transparent face shields is that lips movement is visible to colleagues, reducing the propensity to remove the protection means while speaking.
Inter aha, face shields are in use by the general public and medical personnel in order to limit the outbreak of severe acute respiratory syndrome coronavirus 2 (SARS-
CoV-2) pandemic, the virus that caused coronavirus disease 2019 (COVID-19). The use of face shields has become ubiquitous in many countries and an essential part of medical procedures. Some local governments and municipalities have enforced compulsory face shields policies also in public areas.
The COVID-19 virus is transmitted through close contact, droplets, and possibly airborne transmission. The persons most at risk of getting infected are those who are in close contact with a COVID-19 patient or care for COVID- 19 patients.
There is a need to provide a reliable, light weight and economical face shield combined with a condensation reduction device or a condensation reduction device configured to be attached to an already available face shield, in order to prevent condensation upon the face shield visor which in turn may cause a significant visibility reduction.
There is a further need to provide the aforementioned condensation reduction device by using currently available components in order to allow a fast and large-scale manufacturing and distribution of the condensation reduction device in light of currently urgent global needs.
SUMMARY OF THE INVENTION
The present invention provides a face shield system that comprises a condensation reduction device configured to provide a user with a face shield not susceptible to vapor condensation accumulating upon the face shield visor, which in turn may cause a significant visibility reduction and potential health hazards. The present invention further provides a condensation reduction device configured to be attached to an already commercially available face shield in order to provide a user with a face shield not susceptible to vapor condensation accumulating upon the face shield visor, which in turn may cause a significant visibility reduction and potential health hazards.
The following embodiments and aspects thereof are described and illustrated in conjunction with systems, devices and methods which are meant to be exemplary and illustrative, not limiting in scope. In various embodiments, one or more of the abovedescribed problems have been reduced or eliminated, while other embodiments are directed to other advantages or improvements.
According to one aspect, there is provided a condensation reduction device, comprising a dehumidification assembly configured to be coupled with a face shield and a power source configured to be coupled with said face shield, wherein the power source is configured to enable the operation of the dehumidification assembly, which in turn is configured to reduce the humidity levels in the vicinity of the surface of the face shield visor.
According to some embodiments, the dehumidification assembly is configured to be detachably attached to the face shield.
According to some embodiments, the power source is configured to be detachably attached to the face shield. According to some embodiments, the dehumidification assembly further comprises filtering means.
According to some embodiments, the dehumidification assembly is a propeller assembly configured to create an air-flow. According to some embodiments, a casing manifold is coupled with a propeller component and configured to divert air-flow produced by the propeller component towards the surface of the face shield visor.
According to some embodiments, the propeller assembly further comprises at least one conduit configured to distribute the produced air-flow in vicinity of the surface of the face shield visor.
According to some embodiments, at least one conduit is configured to divert the produced air-flow toward a particular area of the surface of the face shield visor, wherein said particular area may be is in the vicinity of a user’s eyes or mouth.
According to some embodiments, the conduit is flexible and configured to be inserted between the user’s head and a head mount component of the face shield.
According to some embodiments, the dehumidification assembly and/or the power source are a commercial off-the-shelf products (COTS).
According to some embodiments, the power source is a power reservoir.
According to some embodiments, the power reservoir is a rechargeable battery. According to some embodiments, the power reservoir is a USB type energy bank.
According to some embodiments, the power source is renewed by solar energy.
According to some embodiments, the solar energy is obtained from solar cells mounted on the face shield or located on the user’s attire.
According to some embodiments, the power source is configured to be distally positioned to the face shield visor while the dehumidification assembly is configured to be proximally positioned to the face shield visor.
According to some embodiments, the mass of the power source substantially provides a counter weight to the mass of the dehumidification assembly.
According to some embodiments, the power reservoir is integrated within the casing of the dehumidification assembly.
According to some embodiments, the condensation reduction device further comprising manual or automatic operation means.
According to some embodiments, the automatic operation means utilize humidity sensing means.
According to another aspect, there is provided a face shield visor condensation reduction system, comprising a head mount component; a visor; a dehumidification assembly and a power source, wherein the power source is configured to power the dehumidification assembly and the dehumidification assembly is configured to reduce the humidity levels in the vicinity of the surface of the face shield visor. According to some embodiments, the dehumidification assembly is configured to be detachably attached to the head mount component.
According to some embodiments, the power source is configured to be detachably attached to the head mount component.
According to some embodiments, the head mount component further comprises an opening configured to allow an air-flow produced by the propeller assembly to reach the surface of the face shield visor.
According to some embodiments, the propeller assembly casing is configured to divert air-flow produced by a propeller component towards the surface of the face shield visor.
According to some embodiments, the face shield visor condensation reduction system further comprising manual or automatic operation means.
According to some embodiments, the automatic operation means utilize humidity sensing means.
According to yet another aspect, there is provided a method for using a face shield visor condensation reduction system, comprising the steps of wearing a face shield comprising a head mount component, a visor and a condensation reduction device and activating the condensation reduction device in order to reduce the humidity levels in the vicinity of the surface of the face shield visor, wherein the operation of the condensation reduction device reduces the occurrence of condensation upon the surface of the face shield visor.
BRIEF DESCRIPTION OF THE FIGURES
Some embodiments of the invention are described herein with reference to the accompanying figures. The description, together with the figures, makes apparent to a person having ordinary skill in the art how some embodiments may be practiced. The figures are for the purpose of illustrative description and no attempt is made to show structural details of an embodiment in more detail than is necessary for a fundamental understanding of the invention. For the sake of clarity, some objects depicted in the figures are not to scale.
In the Figures:
Fig. 1A constitutes a schematic perspective view of a condensation reduction device, according to some embodiments of the invention.
Figs. IB, and 1C constitute a schematic perspective view of a face shield equipped with a condensation reduction device, according to some embodiments of the invention.
Figs. 2A, 2B and 2C constitute a front, rear and side perspective view of a face shield equipped with a condensation reduction device, according to some embodiments of the invention. Fig- 3 constitutes an exploded view of a condensation reduction device, according to some embodiments of the invention.
Fig- 4 constitutes a side perspective view of a condensation reduction device, according to some embodiments of the invention.
Figs. 5A, 5B, 5C and 5D constitute a rear, side and front perspective view of a condensation reduction device and a face shield coupled with a condensation reduction device, according to some embodiments of the invention.
Figs. 6A, and 6B constitute a schematic perspective view of a face shield coupled with a condensation reduction device, according to some embodiments of the invention.
Fig. 7 constitutes a schematic perspective view of a face shield coupled with a condensation reduction device, according to some embodiments of the invention.
DETAILED DESCRIPTION OF SOME EMBODIMENTS
In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the invention. However, it will be understood by those skilled in the art that the present invention may be practiced without these specific details. In other instances, well-known methods, procedures, and components, modules, units and/or circuits have not been described in detail so as not to obscure the invention. Some features or elements described with respect to one embodiment may be combined with features or elements described with respect to other embodiments. For the sake of clarity, discussion of same or similar features or elements may not be repeated.
Although embodiments of the invention are not limited in this regard, the terms “plurality” and “a plurality” as used herein may include, for example, “multiple” or “two or more”. The terms “plurality” or “a plurality” may be used throughout the specification to describe two or more components, devices, elements, units, parameters, or the like. Unless explicitly stated, the method embodiments described herein are not constrained to a particular order or sequence. Additionally, some of the described method embodiments or elements thereof can occur or be performed simultaneously, at the same point in time, or concurrently.
The terms "commercial off-the-shelf' or "COTS", as used herein, refers to products that can be commercially purveyed and used "as-is". COTS products are designed to be easily installed and to compatibly interoperate with existing system components while having relatively low costs.
The term "dehumidification assembly", as used herein, refers to a device, technology or substance capable of reducing humidity levels in its vicinity or proximity. Such a dehumidification assembly may comprise of, for example, a fan or ventilator, an air pump, an air conditioning system, a desiccant or any other humidity control device, technology or substance.
The term "propeller", as used herein, refers to a component which propels fluid
(such as liquid, gas, air, etc.) by accelerating its flow. A propeller device may comprise an inlet in order to receive incoming fluid and an outlet in order to emit said fluid out. Alternatively, the term “propeller” as used herein, may also refer to a known air pump structure that may comprise an oscillating coil as a main motor, and a diaphragm configured to suck and pump air through the outlet while undergoing expansion and contraction phases.
Face shields are essential protection equipment designed to protect the user from air-born particles or airborne droplets of harmful substances. Face shields are susceptible to moisture emanating from the user’s mouth or nose and condenses upon the inner side of the visor. Such condensed fogging may require constant wiping or cleaning of the face shield to avoid visibility reduction that in turn, may lead to operational limitations that may have harmful consequences.
According to some embodiments, a condensation reduction device is configured to prevent the accumulation of condensed humidity upon a face shield visor. This can be achieved, for example, by using a simple propeller to ventilate the inner or outer surface of the face shield visor or by any other means of humidity control mechanism or substance.
According to some embodiments, the condensation reduction device may be assembled from light weight commercial of the shelf components and may be combined with a designated face shield, or configured to be attached to any generic face shield available on the market. Reference is made to FIGS. 1A, IB and 1C, which constitute a schematic perspective view of a condensation reduction device 30 and face shield 10, according to some embodiments of the invention. As shown, propeller assembly 100 may be connected to a power reservoir 108 through wire 106 and may be operated by operation means 104. According to some embodiments, propeller assembly 100 may be a fan or a ventilator configured to propel air through channel 102. According to some embodiments, the power reservoir may be any kind of battery, such as rechargeable USB power bank, solar charged battery pack, rechargeable batteries, single-use batteries, etc. According to some embodiments, the power reservoir 108 may be integrated with the propeller assembly 100 or may be a separate component.
According to some embodiments, propeller assembly 100 may be configured to be coupled to face shield 10, for example, propeller assembly 100 may be configured to be coupled to a head mount 22 that forms a part of the face shield 10. According to some embodiments, head mount 22 may be, for example, an arch headband, a cloth mount, etc. and may be made from woven material, resilient material or any other known material or configuration able to be held by a user’s head and carry propeller assembly 100. According to some embodiments, connectors 26 may form a part of head mount 22 and may be used to grasp power reservoir 108.
According to some embodiments, visor 24 may be formed from a flat sheet of flexible transparent light weight material and be configured to be coupled to head mount 22 in order to protect a user’s face. The visor 24 may have an inner side facing the user’s face and an outer side facing the outside environment. According to some embodiments, propeller assembly 100 may be configured to be coupled to a designated opening 28 formed on the head mount 22, such that air emitted from the propeller assembly 100 is released proximate to or in the vicinity of the inner surface of the visor 24. According to some embodiments, activating the propeller assembly 100 located in the aforementioned configuration, may reduce the relative humidity level in proximity to or vicinity of the inner surface of the visor 24 and in turn may reduce the condensation caused by the humid breath of the user, user's body sweat or by any other humidity source, and later accumulated upon the inner surface of the visor 24. According to some embodiments, propeller assembly 100 and power reservoir 108 may be COTS products that may need relatively few adjustments to be compatible with each other and form the condensation reduction device 30.
Reference is made to FIGS. 2A, 2B and 2C, which constitute a front, rear and side perspective view of a face shield 10 coupled to a condensation reduction device 30, according to some embodiments of the invention. As shown, face shield 10 is configured to be held upon the user’s head using head mount 22, propeller assembly 100 is configured to be coupled to the front section of head mount 22 and power reservoir 108 is configured to be coupled to the rear section of head mount 22. Said configuration may thus provide a counter weight to both propeller assembly 100 and power reservoir 108.
According to some embodiments, propeller assembly 100 may be connected to power reservoir 108 through wire 106 wherein said wire is configured to be sprawled over or around the user’s head. According to some embodiments (not shown), wire 106 may be configured with attachment means that enable attachment between wire 106 and head mount 22, for example, wire 106 may be configured to be attached along the perimeter of head mount 22 using said attachment means. According to some embodiments (not shown), wire 106 may be an integral part of the structure forming head mount 22, for example, by passing through woven material or a polymer forming head mount 22.
According to some embodiments, condensation reduction device 30 may be operated by operation means 104 that may be a switch, button, a touch surface, dial, knob etc. According to some embodiments, operation means 104 may be manually operated by the user, for example, when the user detects a condensation forming upon the visor 24, he/she can activate the condensation reduction device 30 in order to clear visor 24. According to some embodiments, operation means 104 may be operated automatically, for example, the condensation reduction device 30 may further comprise sensing means such as a humidity sensor (not shown), configured to detect humidity level in proximity to the condensation reduction device 30 or in the vicinity of user's eyes/mouth. When measured humidity level exceeds a certain threshold, the result may be the activating of the condensation reduction device 30 and vice versa.
According to some embodiments, power reservoir 108 may be integrated within propeller assembly 100, for example, power reservoir 108 may be a rechargeable/non- rechargeable battery, occupying a designated chamber within the casing of propeller assembly 100.
Reference is made to FIGS. 3 and 4, which constitute an exploded view of a condensation reduction device 30, according to some embodiments of the invention. As shown, propeller assembly 100 may comprise of a front case member 202 and a rear case member 206 configured to encase propeller component 204 that may be a ventilator, fan, pump, etc. According to some embodiments, coupled case members 202 and 206 create a single manifold that further comprises channel 102. According to some embodiments, channel 102 may be formed from an extension of one or more case members 202 or 206.
As previously disclosed, propeller assembly 100 may be a COTS product that may need relatively few adjustments to form a part of the condensation reduction device 30. According to some embodiments, filter 208 may be installed upon the inlet/outlet of propeller assembly 100 in order to provide filtration to the air entering/exiting propeller assembly 100. According to some embodiments, said filtration provided by the filter 208 may capture airborne chemicals or biological particles such as viruses or bacteria, hence, filter 208 may provide the user with enhanced protection against infectious diseases or harmful substances.
Reference is made to FIGS. 5A 5B, 5C, and 5D which constitute a rear, side and front perspective view of a condensation reduction device 30 and a front view of face shield 10 coupled with condensation reduction device 30, according to some embodiments of the invention. As shown, propeller assembly 100 may be compatible to be attached to a head mount 22 of a generic face shield 10. Such attachment may be obtained by using attachment means 112 that may be, for example, double-sided ducttape, a magnet, a Velcro strip or any other adhesive or connective material attached to propeller assembly 100 and configured to be attached to a head mount 22 of a generic face shield 10. According to some embodiments, the propeller assembly 100 may comprise a flexible conduit 110 configured to allow air-flow from the coupled propeller assembly 100 and along the inner/outer surface of visor 24, wherein such an air-flow reduces the condensation that may occur due to high-air humidity or due to the humid breath of the user and accumulate upon the inner/outer surface of the visor 24.
According to some embodiments, flexible conduit 110 is configured to divert the produced air-flow toward a particular area of the face shield visor 24, for example, the user may bend and fix conduit 110 in a desired direction, for example, the user may bend conduit 110 such that air-flow will be emitted toward the visor 24 area in front of the user’s eyes, designated line of sight, mouth, etc.
According to some embodiments, power reservoir 108 may be a separate component connected to propeller assembly 100 through wire 106 and may be configured with similar attachment means 112 in order to enable attachment to the head mount 22 of a generic face shield 10 as previously disclosed.
According to some embodiments, power reservoir 108 may be integrated within the casing that forms propeller assembly 100, for example, power reservoir 108 may be a rechargeable/non-rechargeable battery, occupying a designated chamber within the casing of propeller assembly 100.
According to some embodiments, conduit 110 may form a part of propeller assembly 100 and be configured to emit the air-flow generated by the propeller component 204 (shown in FIG. 3). According to some embodiments, conduit 110 may be a flexible tube that may be bent and be fixed in a desired direction. According to some embodiments, while installing the propeller assembly 100 upon the head mount 22 of a generic face shield 10, a user may place conduit 110 between the head mount 22 and user's head, such that the air-flow emitted from the conduit 110 will blow along the inner surface of visor 24. According to some embodiments, any attachment arrangement that enables propeller assembly 100 and/or power reservoir 108 to be attached to head mount 22 and any configuration of the conduit 110 are possible in order to achieve a configuration wherein air-flow produced by the propeller assembly 100 flows along the inner/outer surface of visor 24.
According to some embodiments, the air-flow output configured to be emitted from the propeller assembly 100 is relatively low and hence, does not create discomfort to the user as a result of air-flowing next to said user's face.
Reference is made to FIGS. 6A and 6B, which constitute a schematic perspective view of a face shield 10 coupled with a condensation reduction device 30, according to some embodiments of the invention. As shown, and according to some embodiments, propeller assembly 100 may be configured to be attached by attachment means 112, to the rear part of head mount 22, in this arrangement, conduit 110 may have sufficient length to reach the front part of head mount 22 in order to emit an air-flow along the inner/outer surface of visor 24. According to some embodiments, propeller assembly 100 may be configured to be attached by attachment means 112 to the side part of the head mount 22. In this arrangement, conduit 110 may have sufficient length to reach the front part of head mount 22 in order to emit air flow along the inner/outer surface of visor 24.
According to some embodiments, conduit 110 may comprise further attachment means (not shown) to be attached along the perimeter of head mount 22, for example, conduit
110 may be attached by double-sided duct-tape, a magnet, a Velcro strip or any other adhesive technic in order to couple to head mount 22 and release an air-flow along the inner side of visor 24. According to some embodiments (not shown), conduit 110 may be an integral part of the structure forming head mount 22, for example, by passing through woven material or a polymer forming head mount 22.
Reference is made to FIG. 7, which constitutes a schematic perspective view of a face shield 10 coupled with the condensation reduction device 30, according to some embodiments of the invention. As shown, condensation reduction device 30 may comprise or be coupled with a solar cell sheet 114 configured to produce electricity needed for activating propeller assembly 100. According to some embodiments, the solar cell sheet 114 may form a part of propeller assembly 100, or be a separate component that can be mounted upon the face shield 10 or upon the user’s body/attire. According to some embodiments, electricity produced by the solar cell sheet 114 may be stored in the power reservoir 108, hence providing condensation reduction device 30 with constant energy availability even when solar radiation intensity is relatively low.
According to some embodiments, solar cell sheet 114 may be a COTS product that may need relatively few adjustments to form a part of the condensation reduction device 30.
Although the present invention has been described with reference to specific embodiments, this description is not meant to be construed in a limited sense. Various modifications of the disclosed embodiments, as well as alternative embodiments of the invention will become apparent to persons skilled in the art upon the reference to the description of the invention. It is, therefore, contemplated that the appended claims will cover such modifications that fall within the scope of the invention.

Claims

1. A condensation reduction device, comprising:
(i) a dehumidification assembly configured to be coupled with a face shield, and
(ii) a power source configured to be coupled with said face shield, wherein the power source is configured to enable the operation of the dehumidification assembly, which in turn is configured to reduce the humidity levels in the vicinity of the surface of the face shield visor.
2. The device of claim 1 , wherein the dehumidification assembly is configured to be detachably attached to the face shield.
3. The device of claim 1, wherein the power source is configured to be detachably attached to the face shield.
4. The device of claim 1, wherein the dehumidification assembly further comprises filtering means.
5. The device of claim 1, wherein the dehumidification assembly is a propeller assembly configured to create an air-flow.
6. The device of claim 5, comprising a casing manifold coupled with a propeller component and configured to divert air-flow produced by the propeller component towards the surface of the face shield visor.
7. The device of claim 5, wherein the propeller assembly further comprises at least one conduit configured to distribute the produced air-flow in vicinity of the surface of the face shield visor.
8. The device of claim 7, wherein at least one conduit configured to divert the produced air-flow toward a particular area of the surface of the face shield visor. The device of claim 8, wherein the said particular area is in the vicinity of a user’s eyes. The device of claim 8, wherein the said particular area is in the vicinity of a user’s mouth. The device of any one of claims 7 or 8, wherein the conduit is flexible and configured to be inserted between the user’s head and a head mount component of the face shield. The device of claim 1, wherein the dehumidification assembly is a commercial off- the-shelf product. The device of claim 1, wherein the power source is a commercial off-the-shelf product. The device of claim 1, wherein the power source is a power reservoir. The device of claim 14, wherein the power reservoir is a rechargeable battery. The device of claim 14, wherein the power reservoir is a USB type energy bank. The device of claim 1, wherein the power source is renewed by solar energy. The device of claim 17, wherein the solar energy is obtained from solar cells mounted on the face shield. The device of claim 17, wherein the solar energy is obtained from solar cells located on the user’s attire. The device of claim 1, wherein the power source is configured to be distally positioned to the face shield visor while the dehumidification assembly is configured to be proximally positioned to the face shield visor. The device of claim 20, wherein the mass of the power source substantially provides a counter weight to the mass of the dehumidification assembly. The device of claim 1 , wherein the power reservoir is integrated within the casing of the dehumidification assembly. The device of claim 1, further comprising manual operation means. The device of claim 1, further comprising automatic operation means. The device of claim 24, wherein the automatic operation means utilize humidity sensing means. A face shield visor condensation reduction system, comprising:
(i) a head mount component,
(ii) a visor,
(iii) a dehumidification assembly; and
(iv) a power source, wherein the power source is configured to power the dehumidification assembly and the dehumidification assembly is configured to reduce the humidity levels in the vicinity of the surface of the face shield visor. The system of claim 26, wherein the dehumidification assembly is configured to be detachably attached to the head mount component. The system of claim 26, wherein the power source is configured to be detachably attached to the head mount component. The system of claim 26, wherein the dehumidification assembly is a propeller assembly configured to create an air-flow. The system of claim 29, wherein the head mount component further comprises an opening configured to allow the air-flow produced by the propeller assembly to reach the surface of the face shield visor. The system of claim 28, wherein the propeller assembly further comprising casing configured to divert air-flow produced by a propeller component towards the surface of the face shield visor. The system of claim 26, wherein the dehumidification assembly further comprises filtering means. The system of claim 26, wherein the dehumidification assembly is a commercial off-the-shelf product. The system of claim 26, wherein the power source is a commercial off-the-shelf product. The system of claim 26, wherein the power source is configured to be distally positioned to the face shield visor while the dehumidification assembly is configured to be proximally positioned to the face shield visor. The system of claim 26, wherein the power reservoir is integrated within the casing of the dehumidification assembly. The system of claim 26, further comprises manual operation means. The system of claim 26, further comprises automatic operation means. The system of claim 38, wherein the automatic operation means utilize humidity sensing means. A method for using a face shield visor condensation reduction system, comprising the steps of:
(i) wearing a face shield comprising a head mount component, a visor and a condensation reduction device, and
(ii) activating the condensation reduction device in order to reduce the humidity levels in the vicinity of the surface of the face shield visor, wherein the operation of the condensation reduction device reduces the occurrence of condensation upon the surface of the face shield visor. The method of claim 40, wherein the activation of the condensation reduction device is conducted using manual operation means. The method of claim 40, wherein the activation of the condensation reduction device is conducted using automatic operation means. The method of claim 42, wherein the automatic operation means utilize humidity sensing means.
PCT/IL2021/051071 2020-09-09 2021-09-01 A face shield condensation reduction device and method Ceased WO2022054042A1 (en)

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US63/075,998 2020-09-09

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US5878742A (en) * 1997-09-11 1999-03-09 Figueredo; Joseph P. Airvisor delivery system
US20050010992A1 (en) * 2003-07-18 2005-01-20 Conrad Klotz Head gear apparatus
DE102005055589A1 (en) * 2005-11-22 2007-05-24 Michael Jenke Demisting system especially for motorcycle helmet has an air intake in the front chin with modular blower and heater assembly and with adjustable airflow
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