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US20060285330A1 - Automatic darkening filter with automatic power management - Google Patents

Automatic darkening filter with automatic power management Download PDF

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Publication number
US20060285330A1
US20060285330A1 US11/157,038 US15703805A US2006285330A1 US 20060285330 A1 US20060285330 A1 US 20060285330A1 US 15703805 A US15703805 A US 15703805A US 2006285330 A1 US2006285330 A1 US 2006285330A1
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US
United States
Prior art keywords
adf
time
filter
movement
power management
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.)
Abandoned
Application number
US11/157,038
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English (en)
Inventor
Ingvar Sundell
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.)
3M Innovative Properties Co
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to US11/157,038 priority Critical patent/US20060285330A1/en
Assigned to 3M INNOVATIVE PROPERTIES COMPANY reassignment 3M INNOVATIVE PROPERTIES COMPANY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SUNDELL, INGVAR
Priority to PCT/US2006/022174 priority patent/WO2007001777A1/en
Priority to JP2008516940A priority patent/JP2008546445A/ja
Priority to EP06760727.5A priority patent/EP1906893B1/en
Priority to CN2006800223215A priority patent/CN101203197B/zh
Priority to PL06760727T priority patent/PL1906893T3/pl
Priority to RU2007144542/14A priority patent/RU2385699C2/ru
Priority to CA002610568A priority patent/CA2610568A1/en
Priority to KR1020077029695A priority patent/KR101287684B1/ko
Priority to AU2006262620A priority patent/AU2006262620B2/en
Priority to BRPI0613352-5A priority patent/BRPI0613352A2/pt
Priority to TW095121931A priority patent/TW200704979A/zh
Publication of US20060285330A1 publication Critical patent/US20060285330A1/en
Priority to US12/614,648 priority patent/US8042958B2/en
Priority to US13/232,827 priority patent/US20120057240A1/en
Abandoned legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F9/00—Methods or devices for treatment of the eyes; Devices for putting in contact-lenses; Devices to correct squinting; Apparatus to guide the blind; Protective devices for the eyes, carried on the body or in the hand
    • A61F9/04—Eye-masks ; Devices to be worn on the face, not intended for looking through; Eye-pads for sunbathing
    • A61F9/06—Masks, shields or hoods for welders
    • A61F9/065—Masks, shields or hoods for welders use of particular optical filters
    • A61F9/067—Masks, shields or hoods for welders use of particular optical filters with variable transmission

Definitions

  • the present invention pertains to an automatic darkening liquid crystal protective shield or filter that can be used on a welding helmet to filter light incident from a welder's torch.
  • ADFs Automatic darkening liquid crystal protective shields
  • a typical ADF includes electronic control circuitry, powered by a battery, which causes the filter to change from a light (clear or transparent) state when not subjected to the glare of the welding arc to a dark (nearly opaque) state upon exposure to such glare. This enables a welder to perform a welding operation and also perform tasks outside the welding area without removing the protective shield.
  • the ADFs may be constructed from a combination of polarizing filters and layers of liquid crystal elements. Examples of such filters are described in U.S. Pat. Nos. 6,097,451 and 5,825,441, both to Hornell and Palmer.
  • the present invention provides a protective automatic darkening filter (ADF) that includes automatic power management.
  • the ADF includes a power management control unit that controls power to the ADF based on whether or not the ADF is currently in use.
  • the power management control unit includes a motion sensor that senses movement of the ADF and controls power to the ADF based on the sensed movement.
  • the invention comprises an automatic darkening filter comprising an ADF helmet, a switchable filter mounted in the ADF helmet that changes from a light state to a dark state in response to a control signal, a switchable filter control unit that generates and sends the control signal to the switchable filter in response to information indicative of presence of incident light, and a power management control unit that senses movement of the ADF and that controls power to the ADF based on the sensed movement.
  • the invention comprises a method comprising sensing movement of an automatic darkening filter and controlling power to the automatic darkening filter based on the sensed movement.
  • ADF automatic darkening filter
  • ADF means a protective device including a helmet and a switchable filter designed to protect a user's eyes from excessive glare in an environment such as welding or in other environments where there is the potential for damage to the human eye from excessively bright light.
  • automated power management means automatically controlling power to a device without affirmative user action (such as pressing an ON/OFF button or other power control switch).
  • switchable filter means a filter capable of changing from a light state to a dark state in response to a control signal.
  • switchable filter control unit means a unit that generates and sends the control signal to the switchable filter in response to information indicative of presence of incident light.
  • motion sensor means a sensor that senses any of a number of parameters indicative of movement, such as position, acceleration, tilt, shock and/or vibration.
  • power source means any device or mechanism by which electrical power may be supplied, such as batteries, power supplies, generators, capacitors, fuel cells, AC power source, or any other type of electrical power supply.
  • power management control unit means a unit that senses movement of the ADF and that controls power to the ADF based on the sensed movement.
  • FIG. 1 is a perspective view of an example automatic darkening filter (ADF) helmet 10 having automatic power management.
  • ADF automatic darkening filter
  • FIG. 2 is an exploded view of an example embodiment of an ADF lens construction 20 .
  • FIG. 3 is a block diagram of the switchable filter 30 of FIG. 2 and control electronics 42 of an ADF with automatic power management.
  • FIGS. 4A-4C are timing diagrams showing four system states for an example ADF with automatic power management.
  • FIG. 5 is a flowchart illustrating an example process for providing automatic power management in an ADF.
  • FIG. 1 is a perspective view of an example automatic darkening filter (ADF) helmet 10 of the type with which the present invention may be used.
  • ADF helmet 10 includes an auto-darkening filter lens 20 supported in a helmet shell 12 .
  • the auto-darkening filter lens 20 may be mounted in the helmet shell 12 so that it is directly in front of the wearer's eyes when the helmet is worn by the user.
  • lens 20 is replaceable.
  • Lens 20 may take the form of a rectangular (or other shaped) frame or housing. Examples of helmet shells may be seen, for example, in U.S. Pat. Nos. 6,185,739, 5,533,206, 5,191,468, 5,140,707, 4,875,235, and 4,853,973.
  • ADF helmet 10 may also have clean air supplied to their interior and thus may include a face seal to separate a breathing zone from the ambient air.
  • a face seal to separate a breathing zone from the ambient air.
  • An example of such a face seal is shown in U.S. patent application Ser. Nos. 10/987,512, 10/987,641, 10/988,789, 29/217,155, 29/217,153, 29/217,154, 29/217,107, 29/217,156.
  • FIG. 2 shows an exploded view of an example auto-darkening filter lens 20 .
  • auto-darkening filter lens 20 includes a switchable filter 30 mounted between two replaceable protection plates 22 and 24 .
  • Switchable filter 30 is capable of changing from a light state to a dark state and is controlled by control electronics mounted within ADF helmet 10 .
  • switchable filter 30 is a laminate of seven different layers: a UV/IR filter 31 , three polarizers 32 , 34 , and 36 , two liquid crystal elements 33 and 35 , and a cover glass 37 .
  • UV/IR filter 31 continually blocks harmful radiation, whether the lens is ON, OFF, light or dark.
  • liquid crystal elements 33 and 35 act as shutters that detect and react to a welding arc by instantly shading the lens.
  • suitable switchable filters are described in U.S. Pat. Nos. 6,097,451 and 5,825,441, and in copending and commonly assigned U.S. Patent Application to Magnusson et al., filed Mar. 11, 2005.
  • first and second liquid crystal elements 33 and 35 are low twist liquid crystal cells.
  • the liquid crystal cells 33 and 35 are provided with connectors (not shown) by which a control voltage may be applied.
  • the polarization orientations of the first polarizer 24 and the third polarizer 32 are substantially perpendicular to the polarization orientation of second polarizer 56 as described in the above referenced U.S. Pat. No. 5,825,441.
  • the polarization orientation of at least one of the first polarizer 24 or the third polarizer 32 is offset from substantially perpendicular to the polarization orientation of second polarizer 56 as described in the above referenced U.S. Patent Application to Magnusson et al., filed Mar. 11, 2005.
  • switchable filter 30 may also take other forms as known in the art, and the invention is not limited in this respect.
  • FIG. 3 is a block diagram of an ADF referred to generally by reference numeral 40 .
  • ADF 40 includes switchable filter 30 , switchable filter control unit 50 , and power management control unit 60 .
  • Switchable filter control unit 50 includes a light sensor 54 and a filter controller 52 .
  • Filter controller 52 controls the degree of shade provided by switchable filter 30 in response to a level of incident light detected by light sensor 54 .
  • filter controller 52 receives signals from light sensor 54 indicative of the detected level of incident light and generates a corresponding filter control signal, such as a voltage.
  • Filter controller 52 applies these filter control signals to switchable filter 30 , thus controlling the degree of shade provided by switchable filter 30 in response to detected levels of incident light.
  • filter controller 52 may generate and apply a corresponding control voltage to liquid crystal elements 33 and 35 of switchable filter 30 (see FIG. 2 ).
  • the control voltage causes switchable filter 30 to darken and protect the user from the glare of the welding arc.
  • the magnitude of the control voltage, and thus the degree of shade provided, may be relative to the intensity of the incident light.
  • filter controller 52 may reduce or eliminate the control voltage to liquid crystal elements 33 and 35 , thus causing the filter 30 to become more transparent.
  • the switchable filter 30 thus protects the user while performing a welding operation and allows them to perform other tasks outside the welding area without removing the protective helmet.
  • Power management control unit 60 provides ADF 40 with automatic power management capabilities. Namely, power management control unit 60 controls power to ADF 40 based on whether ADF 40 is currently in use. For purposes of the present invention, power management control unit 60 infers use of ADF 40 from sensed movement. Power management control unit 60 may sense such movement when, for example, a user picks up or puts on ADF 40 in preparation to perform a welding operation. Power management control unit 60 senses movement of ADF 40 and controls power to ADF 40 based on the sensed movement.
  • Power management control unit 60 continually monitors whether ADF 40 is in use and activates or deactivates ADF 40 accordingly. When ADF 40 is not in use, power management control module 60 deactivates ADF 40 . When deactivated, ADF 40 operates in a low (or no) power, quiescent mode or OFF state. Detection of user activity, such the movement sensed when a user picks up the welding helmet, causes ADF 40 to automatically “wake up” or activate and enter an active mode. On the other hand, power management control unit 60 deactivates ADF 40 , returning ADF 40 to the quiescent mode, when the signals received from motion sensor 68 indicate that no user initiated activity has been detected for a specified period of time.
  • power management control unit 60 includes a power source 66 , such as a battery, a motion sensor 68 , a signal conditioning filter 62 and a power controller 64 .
  • Power controller 64 and motion sensor 68 operate together to provide the automatic power management capabilities of ADF 40 .
  • Motion sensor 68 senses movement of ADF 40 and generates and transmits signals indicative of movement to power controller 64 via signal conditioning filter 62 .
  • Signal conditioning filter 62 removes any of these signals that are due to small temporal external vibrations.
  • Signal conditioning filter 62 passes other signals that may be associated with some user activity for analysis by power controller 64 .
  • Power controller 64 includes control logic that analyzes signals originating from motion sensor 68 to determine whether any sensed movements satisfy a preselected threshold condition.
  • the threshold condition corresponds to a minimum level of sensed movement that may result from a user activity.
  • Power controller 64 controls power to ADF 40 based on the sensed motion. If the threshold condition is satisfied, power controller 64 generates and transmits an activation signal to the switchable filter control unit 50 . This activation signal essentially “wakes up” ADF 40 , causing it enter the ON state.
  • ADF 40 provides full auto-darkening protection, switching from light to dark states in response to the presence or absence of detected ambient light as described above.
  • Motion sensor 68 may sense any of a number of parameters indicative of movement, such as position, acceleration, tilt, shock and/or vibration, and it shall be understood that the invention is not limited in this respect.
  • motion sensor 68 is a fully passive device that does not require any power when ADF 40 is in the OFF state.
  • passive sensing devices may include, for example, a mechanical vibration/movement sensor consisting of a loosely connected electrical contact (e.g. one or two gold plated balls), a two-axis or three-axis accelerometer (e.g. a fully integrated silicon device), or any other type of known sensor that senses motion, tilt, shock, vibration, and/or other information indicative of movement.
  • motion sensor 68 may be a low power sensor that draws a minimum amount of current in the OFF state.
  • motion sensor 68 may be any one of several types of vibration/movement sensors
  • the signal of interest is the mechanical acceleration of motion sensor 68 .
  • This acceleration signal could be in a form such as a discriminated binary indicator of any omni directional acceleration component exceeding a given threshold.
  • the acceleration signal could take on a more complex form, such as a three axis accelerometer with separate absolute acceleration values for each axis.
  • Power controller 64 may be conceptually represented as a state machine that is activated at the detection of a first vibration event (i.e., movement sensed by motion sensor 68 ).
  • a first vibration event i.e., movement sensed by motion sensor 68 .
  • Four example system states S 0 -S 3 may be described as follows:
  • FIGS. 4A-4C show timing diagrams illustrating movement from state to state for states S 0 -S 3 described above.
  • the top row of FIGS. 4A-4C shows vibration events indicated generally by reference numerals 70 , 76 and 82 , respectively.
  • the middle row shows system states S 0 -S 3 indicated generally by reference numerals 72 , 78 and 84 , respectively.
  • the bottom row shows status of the ADF (e.g., ON or OFF) indicated generally by reference numerals 74 , 80 and 86 , respectively.
  • ADF e.g., ON or OFF
  • FIG. 4A illustrates a short lived vibration event, indicated generally by reference numeral 70 , that does not result in activation of the system into the ON-state.
  • state S 0 OFF/deactivated
  • a small (short duration) vibration event occurs at time t 0 , causing the system to move to state S 1 .
  • the system waits until time t 1 .
  • state S 1 time frame t 1 -t 0
  • the vibration event continues.
  • the system moves to state S 2 and looks for a vibration event during time frame t 2 -t 1 . Because there is no vibration event during state S 2 (time frame t 2 -t 1 ) the system is not activated and returns to state S 0 at time t 2 .
  • a larger (longer duration) vibration results in activation of the system into the ON state, state S 3 .
  • the vibration event indicated by reference numeral 76 occurs at time t 3 in state S 2 . Since time t 3 occurs within the t 2 -t 1 time frame (in other words, before time t 2 ) the system is activated and enters state S 3 , the ON state.
  • the system is ON (state S 3 ) at time t 0 as indicated by reference numeral 86 . While in the ON state S 3 , the system continually monitors movement of the automatic darkening filter. If no movement is sensed during a predefined period of time, power management control unit 60 assumes that the automatic darkening filter is not in use and deactivates ADF 40 . In FIG. 4C , the predefined period of time is time frame t 4 -t 0 . Because no vibration event is sensed during the t 4 -t 0 time frame, the power management control unit 60 deactivates the system and returns it to state S 0 , the OFF state.
  • time frame t 1 -t 0 may be anywhere within a range of 0.5 seconds to 3 seconds, for example.
  • Time frame t 2 -t 1 may be anywhere within a range of 0.5 to 3 seconds, for example.
  • Time frame t 4 -t 0 may be anywhere within a range of 1 minute to 10 minutes, for example. It shall be understood, however, that these time frames may be modified, and that other time frames lying outsides the listed ranges may also be appropriate, depending upon the type of use and/or the particular environment in which the ADF is to be used, among other factors. The invention is therefore not limited in this respect.
  • FIG. 5 is a flowchart illustrating an example process by which power management control unit 60 automatically manages power to ADF 40 .
  • the process will be described beginning in the OFF state (S 0 ) ( 90 ), although it shall be understood that the process may also be described at any point.
  • power controller 64 In the OFF state, S 0 ( 90 ), power controller 64 analyzes signals originating from motion sensor 68 for a vibration event ( 91 ). If no vibration event that satisfied the threshold condition is detected, the system remains in the OFF state, S 0 ( 90 ). If a vibration even that satisfied the threshold condition is detected ( 91 ), the system moves to state SI and waits until a first time t 1 ( 92 ). After time t 1 has elapsed, the system moves to state S 2 ( 93 ). Power controller 64 then analyzes signals received from motion sensor 68 for a vibration event during time frame t 2 -t 1 ( 94 ). If no vibration is detected during this time frame, power controller 64 assumes that the original detected vibration was not correlated with a user initiated activity and returns to the OFF state, S 0 ( 90 ).
  • Examples of appropriate OFF conditions ( 96 ) may include, for example, absence of a detected welding light for a defined period of time, absence of sensed movement for a defined period of time, no other user activity (such as operation of the ADF user controls) for a defined period of time, or other appropriate condition indicative that the ADF is not currently being used. For example, if no vibration event satisfying the threshold condition is detected for a specified period of time, power controller 64 may assume that ADF 40 is no longer in use and may return the system to the OFF state, S 0 .
  • This specified time period may be set, for example, anywhere between 1 minute and 10 minutes. The specified time period may be determined and set by the manufacturer or may be settable by the user, and may be chosen to provide an appropriate length of time for the environment in which the ADF is used.
  • Power controller 64 and/or filter controller 52 may be embodied as a computer-readable medium that includes instructions for causing a programmable processor to carry out the methods described above.
  • a “computer-readable medium” includes but is not limited to read-only memory (ROM), random access memory (RAM), non-volatile random access memory (NVRAM), electrically erasable programmable read-only memory (EEPROM), flash memory, a magnetic hard drive, a magnetic disk or a magnetic tape, a optical disk or magneto-optic disk, a holographic medium, or the like.
  • the instructions may be implemented as one or more software modules, which may be executed by themselves or in combination with other software.
  • a “computer-readable medium” may also comprise a carrier wave modulated or encoded to transfer the instructions over a transmission line or a wireless communication channel.
  • the invention may also be embodied as one or more devices that include logic circuitry to carry out the functions or methods as described herein.
  • the logic circuitry may include a processor that may be programmable for a general purpose or may be dedicated, such as microcontroller, a microprocessor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a field programmable gate array (FPGA), and the like.
  • DSP Digital Signal Processor
  • ASIC Application Specific Integrated Circuit
  • FPGA field programmable gate array
  • a computer-readable medium may store or otherwise comprise computer-readable instructions, i.e., program code that can be executed by a processor to carry out one of more of the techniques described above.
  • the invention described herein has several advantages. For example, because the ADF automatically activates when the helmet is picked up, the user need not take any special measures to get the system ready for use.
  • the control circuitry ensures that the system is activated when needed, reducing the risk that the user forgets to turn on the ADF and does not receive active protection.
  • the system may also save electrical energy (e.g., battery life) by powering down the device when not in use and activating the device only when needed. Because of the lower energy consumption, smaller and lighter batteries may also be used.

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  • Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Biomedical Technology (AREA)
  • Ophthalmology & Optometry (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Public Health (AREA)
  • Helmets And Other Head Coverings (AREA)
  • Liquid Crystal (AREA)
  • Current-Collector Devices For Electrically Propelled Vehicles (AREA)
  • Protection Of Static Devices (AREA)
  • Automatic Cycles, And Cycles In General (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Radiation-Therapy Devices (AREA)
US11/157,038 2005-06-20 2005-06-20 Automatic darkening filter with automatic power management Abandoned US20060285330A1 (en)

Priority Applications (14)

Application Number Priority Date Filing Date Title
US11/157,038 US20060285330A1 (en) 2005-06-20 2005-06-20 Automatic darkening filter with automatic power management
BRPI0613352-5A BRPI0613352A2 (pt) 2005-06-20 2006-06-07 filtro de escurecimento automático e método
RU2007144542/14A RU2385699C2 (ru) 2005-06-20 2006-06-07 Автоматический затемняющий фильтр с автоматическим управлением питания
KR1020077029695A KR101287684B1 (ko) 2005-06-20 2006-06-07 자동 전원 관리를 구비한 자동 감광 필터
EP06760727.5A EP1906893B1 (en) 2005-06-20 2006-06-07 Automatic darkening filter with automatic power management
CN2006800223215A CN101203197B (zh) 2005-06-20 2006-06-07 具有自动电源管理能力的自动变光滤光器
PL06760727T PL1906893T3 (pl) 2005-06-20 2006-06-07 Automatyczny filtr ściemniający z automatycznym sterowaniem zasilania
PCT/US2006/022174 WO2007001777A1 (en) 2005-06-20 2006-06-07 Automatic darkening filter with automatic power management
CA002610568A CA2610568A1 (en) 2005-06-20 2006-06-07 Automatic darkening filter with automatic power management
JP2008516940A JP2008546445A (ja) 2005-06-20 2006-06-07 自動電力管理を備えた自動遮光フィルタ
AU2006262620A AU2006262620B2 (en) 2005-06-20 2006-06-07 Automatic darkening filter with automatic power management
TW095121931A TW200704979A (en) 2005-06-20 2006-06-19 Automatic darkening filter with automatic power management
US12/614,648 US8042958B2 (en) 2005-06-20 2009-11-09 Automatic darkening filter with automatic power management
US13/232,827 US20120057240A1 (en) 2005-06-20 2011-09-14 Automatic darkening filter with automatic power management

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/157,038 US20060285330A1 (en) 2005-06-20 2005-06-20 Automatic darkening filter with automatic power management

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US12/614,648 Division US8042958B2 (en) 2005-06-20 2009-11-09 Automatic darkening filter with automatic power management

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US20060285330A1 true US20060285330A1 (en) 2006-12-21

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Family Applications (3)

Application Number Title Priority Date Filing Date
US11/157,038 Abandoned US20060285330A1 (en) 2005-06-20 2005-06-20 Automatic darkening filter with automatic power management
US12/614,648 Expired - Lifetime US8042958B2 (en) 2005-06-20 2009-11-09 Automatic darkening filter with automatic power management
US13/232,827 Abandoned US20120057240A1 (en) 2005-06-20 2011-09-14 Automatic darkening filter with automatic power management

Family Applications After (2)

Application Number Title Priority Date Filing Date
US12/614,648 Expired - Lifetime US8042958B2 (en) 2005-06-20 2009-11-09 Automatic darkening filter with automatic power management
US13/232,827 Abandoned US20120057240A1 (en) 2005-06-20 2011-09-14 Automatic darkening filter with automatic power management

Country Status (12)

Country Link
US (3) US20060285330A1 (zh)
EP (1) EP1906893B1 (zh)
JP (1) JP2008546445A (zh)
KR (1) KR101287684B1 (zh)
CN (1) CN101203197B (zh)
AU (1) AU2006262620B2 (zh)
BR (1) BRPI0613352A2 (zh)
CA (1) CA2610568A1 (zh)
PL (1) PL1906893T3 (zh)
RU (1) RU2385699C2 (zh)
TW (1) TW200704979A (zh)
WO (1) WO2007001777A1 (zh)

Cited By (21)

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US20100053541A1 (en) * 2005-06-20 2010-03-04 3M Innovative Properties Company Automatic darkening filter with automatic power management
US20100131788A1 (en) * 2008-11-24 2010-05-27 International Business Machines Corporation Motion Sensor Assisted Auto-Shutdown Mechanism in Portable Audio Systems
EP2281534A1 (de) * 2009-08-03 2011-02-09 Optrel Ag Schweisserschutzmaske
US20110077865A1 (en) * 2008-05-13 2011-03-31 Koninklijke Philips Electronics N.V. Fall detection system
USD678619S1 (en) 2010-10-26 2013-03-19 Kimberly-Clark Worldwide, Inc. Welding auto-darkening filter assembly
USD683502S1 (en) 2010-10-26 2013-05-28 Kimberly-Clark Worldwide, Inc. Welding auto-darkening filter
USD683906S1 (en) 2010-10-26 2013-06-04 Kimberly-Clark Worldwide, Inc. Welding auto-darkening filter
US20130340141A1 (en) * 2012-06-21 2013-12-26 Otos Wing Co., Ltd. Grinding mode selector switch for welding masks
US20140013479A1 (en) * 2010-12-01 2014-01-16 3M Innovative Properties Company Welding helmet having a filter arrangement
US20150033430A1 (en) * 2013-08-05 2015-02-05 Optrel Ag Face protector for welder
US20150033431A1 (en) * 2013-08-05 2015-02-05 Optrel Ag Face protector
US20150135389A1 (en) * 2013-11-21 2015-05-21 Optrel Ag Method and apparatus for controlling opening of an auto-darkening filter in an eye protection device
US20160107257A1 (en) * 2014-10-16 2016-04-21 Illinois Tool Works Inc. Sensor-based power controls for a welding system
ITUB20160255A1 (it) * 2016-02-01 2017-08-01 Nuovo Pignone Tecnologie Srl Apparato di saldatura
EP3329887A1 (de) * 2016-11-30 2018-06-06 optrel Holding AG Optischer blendschutzfilter
US20200368839A1 (en) * 2019-05-22 2020-11-26 Illinois Tool Works Inc. Weld monitoring systems with unknown downtime disabling
US10930902B2 (en) 2015-04-22 2021-02-23 Tecmen Electronics Co., Ltd. Lockable fitting structure for an electric air-purifying respirator of an auto-darkening welding helmet
US20210369501A1 (en) * 2012-05-04 2021-12-02 Illinois Tool Works Inc. Welding helmet for detecting arc data
US20240351128A1 (en) * 2014-08-18 2024-10-24 Illinois Tool Works Inc. Systems and methods for a personally allocated interface for use in a welding system
WO2024221954A1 (en) * 2023-04-28 2024-10-31 Tecmen Electronics Co., Ltd Auto-darkening filter (adf) and control method thereof
US12465995B2 (en) 2014-10-16 2025-11-11 Illinois Tool Works Inc. Remote power supply parameter adjustment

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US20100053541A1 (en) 2010-03-04
KR101287684B1 (ko) 2013-07-24
AU2006262620A1 (en) 2007-01-04
RU2007144542A (ru) 2009-07-27
JP2008546445A (ja) 2008-12-25
US8042958B2 (en) 2011-10-25
PL1906893T3 (pl) 2017-03-31
TW200704979A (en) 2007-02-01
CN101203197A (zh) 2008-06-18
CA2610568A1 (en) 2007-01-04
US20120057240A1 (en) 2012-03-08
BRPI0613352A2 (pt) 2011-01-04
EP1906893B1 (en) 2016-07-20
CN101203197B (zh) 2010-05-26
RU2385699C2 (ru) 2010-04-10
KR20080021036A (ko) 2008-03-06
AU2006262620B2 (en) 2011-10-27
WO2007001777A1 (en) 2007-01-04
EP1906893A1 (en) 2008-04-09

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