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US20110203128A1 - Electrical Hair Dryer With Noise Reducer And Noise Reducer - Google Patents

Electrical Hair Dryer With Noise Reducer And Noise Reducer Download PDF

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Publication number
US20110203128A1
US20110203128A1 US13/124,971 US200913124971A US2011203128A1 US 20110203128 A1 US20110203128 A1 US 20110203128A1 US 200913124971 A US200913124971 A US 200913124971A US 2011203128 A1 US2011203128 A1 US 2011203128A1
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US
United States
Prior art keywords
hair dryer
noise reducer
reducer
ring
main body
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
US13/124,971
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English (en)
Inventor
Oscar Jose Rodrigues
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.)
Individual
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
Priority claimed from BRPI0804541 external-priority patent/BRPI0804541A2/pt
Priority claimed from BRMU8901078 external-priority patent/BRMU8901078U2/pt
Priority claimed from BRMU8901079 external-priority patent/BRMU8901079U2/pt
Application filed by Individual filed Critical Individual
Publication of US20110203128A1 publication Critical patent/US20110203128A1/en
Abandoned legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D20/00—Hair drying devices; Accessories therefor
    • A45D20/04—Hot-air producers
    • A45D20/08—Hot-air producers heated electrically
    • A45D20/10—Hand-held drying devices, e.g. air douches
    • A45D20/12—Details thereof or accessories therefor, e.g. nozzles, stands

Definitions

  • the present invention application of a technological electrical hair dryer model with a noise reducer element which can be incorporated to a hair dryer and also a fitting noise reducer element properly attached to the equipment back side or the air entrance, being the said hair dryer especially designed to bring more acoustic comfort for the user, reducing the motor and turbine assembly emitted noise, being the said noise reducer made of phono absorbent material and provides physical structure which allows sound waves breaking, substantially reducing the hair dryer noise produced.
  • the inventor after countless researches, developed this “ELECTRICAL HAIR DRYER WITH NOISE REDUCER AND NOISE REDUCER”, which must get among its similar and get distinction in the consumer market for present an electrical hair dryer featuring a noise reducer device or be used as a fitting element being attached to the back side or at the hair dryer inbound air flow, being the referred device, especially developed to bring the user more acoustic comfort, for reducing the noises from the motor and turbine set present in hair dryers, thus, the noise reducer element is structured in phono absorbent material and presents physical structure which allows noise waves breaking, substantially reducing noises produced by the hair dryer.
  • the claimed hair dryer foresees a noise reducer imbedded in its structure, in other words, the referred reducer is an extension of the claimed hair dryer body, for its production comprises all hair dryers' conventional elements, with an empty tapered element configured device, preferably, build with phono absorbent material or other material of similar characteristics, presenting two internal portions, which are, a first portion which establishes an internal tapered area with a multi faceted surface and an external portion slightly tapered and inverted.
  • a first embodiment of the referred hair dryer which is also an extension of the back side of the claimed hair dryer's body, include a tapered shape element and has two different elements, which are an end first portion in which the internal layered face has a multi faceted surface, and an intermediate portion featuring concentric and equidistant longitudinal cutouts applied to the tapered element body.
  • hair dryer which is also an extension of the back side of the claimed hair dryer's body, that foresees an empty tapered element, which internal portion presents layered longitudinal elements, organized side by side, orthogonally, structuring squared zones, which reduce their own area as they are directed to the device opposite end.
  • This hair dryer device end face has squared cutouts organized toward the squared zones, so that the sound waves are reduced and understate the noise.
  • the present patent also foresees a series of embodiments of the same device, which are defined as fittings that can be added to the hair dryer itself.
  • FIG. 1 shows a side view in partial cut of the hair dryer main model with the noise reducer attached
  • FIG. 2 shows a main noise reducer device perspective view
  • FIG. 3 shows a main noise reducer device longitudinal view
  • FIG. 4 shows a first embodiment of the noise reducer device perspective view
  • FIG. 5 shows a first embodiment of the noise reducer device longitudinal view
  • FIG. 6 shows a second embodiment of the noise reducer device perspective view
  • FIG. 7 shows a second embodiment of the noise reducer device longitudinal view
  • FIG. 8 shows a noise reducer device perspective view
  • FIG. 9 shows the noise reducer element attached, by an elastic ring, to the hair dryer cut view
  • FIG. 10 shows a third embodiment of the noise reducer device perspective view
  • FIG. 11 shows a third embodiment of the noise reducer device back perspective view
  • FIG. 12 shows the third embodiment of the noise reducer element attached, by an elastic ring, to the hair dryer cut view
  • FIG. 13 shows a fourth embodiment of the noise reducer device perspective view
  • FIG. 14 shows a fourth embodiment of the noise reducer device longitudinal view
  • FIG. 15 shows an schematic and an exploded view of a hair dryer generic model in a relative positioning with an adapter ring and in the sequence, the referred noise reducer, concerning the fifth embodiment
  • FIG. 16 shows the fifth embodiment of the noise reducer in a cut and in a perspective view, which allows its internal portion detailed view;
  • FIG. 17 shows the claimed noise reducer frontal view according to the fifth embodiment, where it can be seen its various corrugated internal plans, as well as the three dimensional projections which come from its back wall, and also its internal surface corrugated profile;
  • FIG. 18 shows a schematic cut of the attachment among the hair dryer, adapter ring and the noise reducer itself
  • FIG. 19 shows an schematic and an exploded view of a hair dryer generic model in a relative positioning with an adapter ring and in the sequence, the referred noise reducer, concerning the sixth embodiment
  • FIG. 20 shows the sixth embodiment of the noise reducer in a cut and in a perspective view, which allows its internal portion detailed view;
  • FIG. 21 shows the claimed noise reducer frontal view according to the object of this Patent, where it can be seen its tubular sections radially organized which, together, define the air flow admittance into the noise reducer inner portion, as well as the three dimensional projections which come from its back, and also its internal surface corrugated profile; and
  • FIG. 22 shows a schematic cut of the attachment among the hair dryer, adapter ring and the noise reducer itself, still concerning the sixth embodiment.
  • the “ELECTRICAL HAIR DRYER WITH NOISE REDUCER AND NOISE REDUCER” present invention deals with, especially of an electric hair dryer SC, featuring a noise reducer 1 e also foresees the possibility of the referred noise reducer be a fitting element, attachable at the back side of a conventional hair dryer by means of an elastic-material sleeve.
  • the claimed hair dryer has all its conventional components, further a noise reducer element 1 , developed at the back side or at the hair dryer SC entrance air flow F, being the referred reducer 1 , especially developed to bring the user more acoustic comfort, reducing the noises from the motor and turbine set, for being the noise reducer element structured in phono absorbent material and presents physical structure which allows noise waves OS breaking, substantially reducing noises produced by the hair dryer SC.
  • the referred noise reducer element 1 main construction has a tapered and empty structure, preferably build with phono absorbent material or other material of similar characteristics, presenting two internal portions 2 and 3 , which are, a first portion which has an internal tapered area 4 with a multi faceted surface 5 and an external portion 6 , slightly tapered and inverted.
  • the emitted sound waves OS collide with the wall of the multifaceted area 5 of the internal tapered portion 4 and are broken into smaller waves OS, which are outbound the device 1 , reducing the noise level.
  • a first embodiment of the referred hair dryer SC concerns to a hair dryer SC with an extension at the back side which forms the noise reducer 1 a , being the referred reducer 1 a tapered in shape and with an orthogonal external wall 7 , which internal surface 8 is multi faceted, having also concentric longitudinal and equidistant cutouts 9 , which can be applied all around the noise reducer 1 a circumference
  • the hair dryer SC has an extension at the back which forms the noise reducer 1 d , being the referred reducer 1 d tapered shaped and with an external orthogonal wall 7 d , which internal surface 8 d is multi faceted, having also concentric longitudinal and equidistant cutouts 9 d , which are only applied to one portion of the noise reducer 1 d circumference.
  • the partial cutouts developed at the noise reducer 1 d are developed to keep themselves, in case the equipment is professionally used, turned to the practitioner who is using it, in other words, be the user right or left handed, he can turns the device positioning the cutouts towards himself, providing more safety to the customer's hair.
  • a hair dryer which is also an extension of the back side of the claimed hair dryer's SC body, which includes a tapered element 1 b , presenting an external orthogonal face 11 with small cutouts 12 , preferably squared in shape, aligned with the areas established by the four layered and longitudinal elements 10 , which are internally positioned, side by side organized, orthogonally, structuring squared zones, which reduce their own area as they are directed to the device opposite end with the extension 1 b cutouts 12 .
  • a third embodiment of the referred hair dryer SC concerns to a hair dryer SC with an extension at the back side which forms the noise reducer 1 c , being the reducer 1 c convex in its shape, of preferably sinuous lines, being its external face profiled and with an axial tapered element 15 positioned inside its body, fixed by the arms 16 .
  • each one of the noise reducer 1 , 1 a , 1 b , 1 c and 1 d models foresaw in the hair dryers SC of the present claimed invention can be commercialized individually, in other words, they can be part of a hair dryer SC set of accessories, for this, the referred single devices foresee external ring portions 14 , 14 a , 14 b and 14 c , developed to hold ring elements 13 , these rings are made of elastic-material and are easily attached to any back grounded art hair dryer model or even be attached through any other attachment and anchorage proper means.
  • noise reducer is in the surfaces or internal corrugated plans concept which along with the back projections basically resembling a pyramid, act in a more efficient way at the absorption of the noise produced by the hair dryer, effect that is also improved by the radial inbound air flow, no more axial, as previously foreseen.
  • the adapter ring even though be firmly mounted at the hair dryer body, it allows the attached noise reducer to be turned, assuring that the noise reducer air entrance could be especially positioned in such a way to prevent from accidental hair suction.
  • the noise reducer referred model as shown in FIG. 15 , is generally indicated by the numeric reference 1 , and it is defined by a main body 17 , preferably made of elastomer by injection.
  • the main body 17 is configured as a slightly tapered part, having a closed back wall 18 , to which it is completely merged with a surrounding wall 19 .
  • the main body 17 surrounding wall 19 , through out its external edge 20 has, internally a ring recess 21 , which allows the referred main body 17 to be attached to the ring edge 22 of an adapter ring 23 .
  • the adapter ring 23 is used to allow the noise reducer 1 attachment to a hair dryer device SC.
  • the adapter ring 23 can have a wide range of means which allows its attachment to the hair dryer device SC body. These means can vary in function of each hair dryer SC model drawings and design particularities. This way, the adapter ring model 23 presented here must be seen as one among various forms of substantiation of such component, concerning its attachment means to the hair dryer SC.
  • the adapter ring 23 has a central opening 24 which is surrounded by an equally ring wall 25 , from where locking teeth are projected 26 equally distributed throughout the ring wall 25 .
  • the locking teeth 26 are designed to have, each one, a ramp-like face 27 aimed to allow their locking at the internal area of the back opening 28 , foresaw in the hair dryer SC and through which the air flow F goes into the device.
  • the main body's 17 surrounding wall 19 has a side opening 29 , which is provided with a protective screen 30 to prevent foreigner objects from entering the hair dryer SC main body 17 .
  • the referred side opening 29 is designed to offer a free passing area which does not allow inbound air flow to the hair dryer SC reduction or blocking F. This design also takes in account the screen 30 .
  • the surrounding wall 19 internal face 31 incorporated a corrugated ribbing pattern 32 , which starts in the limits of the ring recess 21 and goes until the main body 17 back wall 18 inner face 33 .
  • start arc-like plans 34 being two fairly horizontal, parallel and juxtaposed 34 A and two fairly vertical and mutually contraposed 34 B, the two referred types being formed by an ordinated curves sequence which forms a pattern that creates longitudinal ribbings 35 in each one of the plan faces 34 .
  • the noise reducer 1 is designed to be mounted at the back of the hair dryer device SC, in such a way that the collected air F is obliged to pass through the reducer 1 through its side opening 29 .
  • the air F follows a way between the arc-like plans 34 before it takes an axial way, towards the hair dryer SC entrance, as indicated by the arrows F, at FIG. 16 .
  • the main body 17 back wall 18 internal face has a surface pattern formed by multiple pyramidal projections 36 , which shows, each one, preferably, four faces 37 .
  • the sound waves OS caused by the hair dryer SC running, which tends to propagate them to its back portion, meets the noise reducer 1 , where they are absorbed and fragmented even by the ribbings patterns 32 as by the arc-like plans format 34 and also by the pyramidal projections 36 .
  • the main body 17 assembly in relation to the adapter ring 23 is accomplished in such a way that the adapter ring, even being fixed to the hair dryer SC body and still holding the axially the referred main body 17 , allows the relative rotational movement of the main body 17 around the ring edge 22 of the ring 23 .
  • This rotational movement R is especially interesting in allowing that the main body 17 could be turned in a way to direct its opening side 29 to a position relatively far from the drying hair.
  • This feature is especially useful when the hair dryer SC (along with the noise reducer 1 ) is professionally used.
  • the main body 17 rotational capacity R in relation to the adapter ring 23 is schematically shown in FIG. 18 , where the double arrow R alludes such rotational capacity R around the reducer 1 axis.
  • the subsequent second model previously referred to which was lodged as Utility Model, also differs from its similar foresaw at Patent application PI0804541-0 for having a adapter ring, which allows its attachment to various types of hair dryer models.
  • noise reducer is in foreseeing radially tubular sectors concept which, together, define the air flow entrance in the noise reducer, which is in a positioning condition that difficulties, inversely, the propagation of the sound which comes from the hair dryer device running.
  • the reducer inbound air flow becomes radial, no more axial, as previously foreseen.
  • the adapter ring even though be firmly mounted at the hair dryer body, it allows the attached noise reducer to be turned, assuring that the noise reducer air entrance could be especially positioned in such a way to prevent from accidental hair suction.
  • the referred noise reducer is generally indicated by the numeric reference 1 , and it is defined by a main body 17 , preferably made of elastomer by injection.
  • the main body 17 is configured as a slightly tapered part, having a closed back wall 18 , to which it is completely merged with a surrounding wall 19 .
  • the main body 17 ′ surrounding wall 19 ′, through out its external edge 20 ′ has, internally a ring recess 21 ′, which allows the referred main body 17 ′ to be attached to the ring edge 22 ′ of an adapter ring 23 ′.
  • the adapter ring 23 ′ is used to allow the noise reducer 1 attachment to a hair dryer device SC.
  • the adapter ring 23 ′ can have a wide range of means which allows its attachment to the hair dryer device SC body. These means can vary in function of each hair dryer SC model drawings and design particularities. This way, the adapter ring model 23 ′ presented here must be seen as one among various forms of substantiation of such component, concerning its attachment means to the hair dryer SC.
  • the adapter ring 23 ′ has a central opening 24 ′ which is surrounded by an equally ring wall 25 ′, from where locking teeth are projected 26 ′ equally distributed throughout the ring wall 25 ′.
  • the locking teeth 26 ′ are designed to have, each one, a ramp-like face 27 ′ aimed to allow their locking at the internal area of the back opening 28 ′ foresaw in the hair dryer SC and through which the air flow goes into the device.
  • the main body 17 ′ surrounding wall 19 ′ has a multiple tubular sectors radially organized 38 which, together, define the air flow entrance into the noise reducer.
  • each tubular sector 38 is assembled in a correspondent opening 39 (especially shown in FIG. 20 ), in which the surrounding wall 19 ′ is produced.
  • This opening 39 makes the end of the respective tubular sector 38 substantially in the same plane with the main body 17 ′ surrounding wall 19 ′.
  • each tubular sector 38 has an extension to the main body 17 ′ interior, such as can be especially understood through the FIG. 20 view, which is a cutout taken in such a way to show a full cut of one of the several tubular sectors 38 and its respective opening 39 .
  • All the tubular sectors 38 are designed to offer a free passing area which does not allow inbound air flow to the hair dryer SC reduction or blocking.
  • the surrounding wall 19 ′ internal face 31 ′ incorporates, at least, one sector of its area, a corrugated ribbing pattern 32 ′, which starts in the limits of the ring recess 21 and goes until the main body 17 back wall 18 inner face 33 .
  • the noise reducer 1 is designed to be mounted at the back of the hair dryer device SC, in such a way that the collected air is obliged to pass through the reducer 38 through the tubular sectors 38 .
  • the air follows a way initially radial then it takes the axial direction to get into the hair dryer SC, as indicated by the arrows F at FIG. 20 .
  • the main body 17 ′ back wall 18 ′ internal face 33 ′ has a surface pattern formed by multiple pyramidal projections 36 ′, which shows, each one, preferably, four faces 37 ′.
  • the sound waves OS caused by the hair dryer SC running, which tends to propagate themselves to its back portion, meets the noise reducer 1 , where they are absorbed and fragmented even by the ribbings patterns 32 ′ as by the pyramidal projections 36 ′.
  • the main body 17 ′ assembly in relation to the adapter ring 23 ′ is accomplished in such a way that the adapter ring, even being fixed to the hair dryer SC body and still holding the axially the referred main body 17 ′, allows the relative movement of the main body 17 ′ around the ring edge 22 ′ of the ring 23 ′.
  • This rotational movement R is especially interesting in allowing that the main body 17 ′ could be turned in a way to direct its tubular sectors 29 to a position relatively far from the drying hair.
  • This feature is especially useful when the hair dryer SC (along with the noise reducer 1 ) is professionally used.
  • the main body 17 ′ rotational capacity R in relation to the adapter ring 23 ′ is schematically shown in FIG. 18 . Where the double arrow R alludes such rotational capacity R around the reducer 1 axis.
  • this document represent and add subject to the three documents previously lodged, being PI 0804541-0 and the two Utility Models identified with the lodge serials numbers MU 8901078-7 and MU 8901079-5, where both documents are subsequent variations, properly innovated by the referred hair dryer noise reducer.

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  • Cleaning And Drying Hair (AREA)
US13/124,971 2008-10-23 2009-10-20 Electrical Hair Dryer With Noise Reducer And Noise Reducer Abandoned US20110203128A1 (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
BRPI0804541 BRPI0804541A2 (pt) 2008-10-23 2008-10-23 aperfeiçoamentos introduzidos em secador de cabelos elétrico com redutor de ruìdos e redutor de ruìdos
BRPI0804541-0 2008-10-23
BRMU8901078 BRMU8901078U2 (pt) 2009-05-29 2009-05-29 redutor de ruìdos para secador de cabelos
BRMU8901079-5 2009-05-29
BRMU8901079 BRMU8901079U2 (pt) 2009-05-29 2009-05-29 redutor de ruìdos para secador de cabelos
BRMU8901078-7 2009-05-29
PCT/BR2009/000342 WO2010045698A1 (fr) 2008-10-23 2009-10-20 Sèche-cheveux électrique muni d’un réducteur de bruit et réducteur de bruit

Publications (1)

Publication Number Publication Date
US20110203128A1 true US20110203128A1 (en) 2011-08-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
US13/124,971 Abandoned US20110203128A1 (en) 2008-10-23 2009-10-20 Electrical Hair Dryer With Noise Reducer And Noise Reducer

Country Status (3)

Country Link
US (1) US20110203128A1 (fr)
EP (1) EP2346369A1 (fr)
WO (1) WO2010045698A1 (fr)

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US20120024620A1 (en) * 2010-07-29 2012-02-02 Parlux S.P.A. Silencer device for a hair dryer
GB2500798A (en) * 2012-03-30 2013-10-02 Dyson Technology Ltd A sound and vibration reducing hot air blower
CN103549752A (zh) * 2013-11-12 2014-02-05 孙生强 一种带消声器的吹风筒
USD715995S1 (en) 2013-09-26 2014-10-21 Dyson Technology Limited Hair dryer
USD715996S1 (en) 2013-09-26 2014-10-21 Dyson Technology Limited Hair dryer
USD716492S1 (en) 2013-09-26 2014-10-28 Dyson Technology Limited Hair dryer
USD726960S1 (en) * 2013-12-02 2015-04-14 Conair Corporation Noise reducing filter end cap for a hair dryer
USD726977S1 (en) * 2012-05-11 2015-04-14 Cheng Chuan Lin Portable electric dryer
USD726959S1 (en) * 2013-12-02 2015-04-14 Conair Corporation Noise reducing filter end cap for a hair dryer
US9144286B2 (en) 2012-03-30 2015-09-29 Dyson Technology Limited Hand held appliance
US9173468B2 (en) 2012-03-30 2015-11-03 Dyson Technology Limited Hand held appliance
DE102014217089A1 (de) * 2014-08-27 2016-03-03 BSH Hausgeräte GmbH Haartrockner
US9282799B2 (en) 2012-07-04 2016-03-15 Dyson Technology Limited Attachment for a hand held appliance
US9414662B2 (en) 2013-07-05 2016-08-16 Dyson Technology Limited Hand held appliance
US9420865B2 (en) 2013-07-05 2016-08-23 Dyson Technology Limited Hand held appliance
US9420864B2 (en) 2013-07-05 2016-08-23 Dyson Technology Limited Hand held appliance
US9526310B2 (en) 2012-07-04 2016-12-27 Dyson Technology Limited Attachment for a hand held appliance
US9596916B2 (en) 2013-07-05 2017-03-21 Dyson Technologies Limited Hand held appliance
US9675157B2 (en) 2012-03-30 2017-06-13 Dyson Technology Limited Hand held appliance
US9681726B2 (en) 2013-07-05 2017-06-20 Dyson Technology Limited Hand held appliance
US9687058B2 (en) 2013-09-26 2017-06-27 Dyson Technology Limited Hand held appliance
USD791407S1 (en) 2015-01-12 2017-07-04 Dyson Technology Limited Hair appliance
US9808067B2 (en) 2013-07-24 2017-11-07 Dyson Technology Limited Attachment for a handheld appliance
US9808065B2 (en) 2013-07-05 2017-11-07 Dyson Technology Limited Hand held appliance
US9808066B2 (en) 2013-07-05 2017-11-07 Dyson Technology Limited Hand held appliance
US10016040B2 (en) 2012-03-30 2018-07-10 Dyson Technology Limited Hand held appliance
US10046894B1 (en) * 2012-05-24 2018-08-14 Milton Carter Variable speed heat air gun and cooperating kit
US10117491B2 (en) 2012-03-30 2018-11-06 Dyson Technology Limited Hand held appliance
USD840098S1 (en) * 2017-08-11 2019-02-05 Spectrum Brands, Inc. Hair dryer
US10194728B2 (en) 2015-01-21 2019-02-05 Dyson Technology Limited Attachment for a hand held appliance
US10213001B2 (en) 2015-01-21 2019-02-26 Dyson Technology Limited Attachment for a hand held appliance
US10278471B2 (en) 2013-09-27 2019-05-07 Dyson Technology Limited Hand held appliance
US10441049B2 (en) 2014-12-16 2019-10-15 Dyson Technology Limited Hand held appliance
US11035384B2 (en) * 2018-04-25 2021-06-15 Sonny's Enterprises, Llc Silencer for an air blower assembly and air blower assembly having the silencer
CN113812743A (zh) * 2020-06-19 2021-12-21 Seb公司 包括由环形隔离装置隔开的外壳体和内壳体的吹风机
CN114023292A (zh) * 2021-11-15 2022-02-08 杭州老板电器股份有限公司 降噪装置及桌面烟机

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GB201020847D0 (en) 2010-12-08 2011-01-19 Jemella Ltd A hair dryer
US9961979B2 (en) * 2012-10-02 2018-05-08 Oscar Rodrigues Hair dryer with control switches underneath handle
US20150201730A1 (en) * 2014-01-23 2015-07-23 Conair Corporation Hair dryer apparatus with noise reducing end cap
CN108348060A (zh) 2015-10-27 2018-07-31 芭比丽丝法科私人有限公司 声音性能改善的吹风机

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Cited By (43)

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US20120024620A1 (en) * 2010-07-29 2012-02-02 Parlux S.P.A. Silencer device for a hair dryer
US8307948B2 (en) * 2010-07-29 2012-11-13 Parlux S.P.A. Silencer device for a hair dryer
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EP2346369A1 (fr) 2011-07-27

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