US20070157365A1 - Cap for hearing protection - Google Patents

Cap for hearing protection Download PDF

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Publication number
US20070157365A1
US20070157365A1 US11/635,863 US63586306A US2007157365A1 US 20070157365 A1 US20070157365 A1 US 20070157365A1 US 63586306 A US63586306 A US 63586306A US 2007157365 A1 US2007157365 A1 US 2007157365A1
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United States
Prior art keywords
shell
cap
rear wall
cap shell
mold
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
US11/635,863
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English (en)
Inventor
Fredrik Hansson
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.)
Honeywell Safety Products USA Inc
Original Assignee
Howard Leight Industries LLC
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 Howard Leight Industries LLC filed Critical Howard Leight Industries LLC
Assigned to HOWARD LEIGHT INDUSTRIES, LLC (DELAWARE LIMITED LIABILITY COMPANY) reassignment HOWARD LEIGHT INDUSTRIES, LLC (DELAWARE LIMITED LIABILITY COMPANY) ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HANSSON, FREDRIK
Publication of US20070157365A1 publication Critical patent/US20070157365A1/en
Assigned to SPERIAN HEARING PROTECTION, LLC (DELAWARE LIMITED LIABILITY COMPANY) reassignment SPERIAN HEARING PROTECTION, LLC (DELAWARE LIMITED LIABILITY COMPANY) CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: HOWARD LEIGHT INDUSTRIES, LLC
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
    • A61F11/00—Methods or devices for treatment of the ears or hearing sense; Non-electric hearing aids; Methods or devices for enabling ear patients to achieve auditory perception through physiological senses other than hearing sense; Protective devices for the ears, carried on the body or in the hand
    • A61F11/06—Protective devices for the ears
    • A61F11/14—Protective devices for the ears external, e.g. earcaps or earmuffs

Definitions

  • the present invention relates to a cap intended for use as hearing protection by blocking environmental noise and is adapted to press against enclose the external ear of a user.
  • the cap comprises a cap shell which is at least partly made of a substantially transparent material.
  • the present invention relates to a method of producing a cap intended for use as hearing protection.
  • a common type of hearing protection comprises two caps which are connected by a headband.
  • the headband is adapted to be placed over the head of the user and the two caps are adapted to be arranged one on each side of the user's head so as to enclose both external ears of the user.
  • the cap in turn comprises a cap shell, which usually is made of plastic, a sealing ring, which is adapted to fit the head of the user, and some kind of sound-absorbing material arranged inside the cap. It is also common for a so-called bottom plate to be arranged which is located between the cap shell and the sealing ring and which keeps the sound-absorbing material in place inside the cap.
  • Hearing protectors are manufactured by specialized companies and are sold to other companies, which for instance have a production plant in which it is necessary to use hearing protectors, and to individuals. Other people who frequently use hearing protectors are, for instance, the staff at airports, motor races, roadworks etc.
  • the companies buying hearing protectors often have various requirements concerning appearance or function. In many cases they want, for instance, the hearing protectors to carry the company's own logotype or some other type of information. Whether there are specific customer requirements or not, the company producing the hearing protector frequently wants to provide it with a picture of its own logotype.
  • the producers of hearing protectors use basically two alternatives which can be used either separately or in combination.
  • the logotype or some other specific information of the customer company is applied after injection molding of the cap shell.
  • Such subsequent application may consist of, for instance, printing or painting the logotype on the outside of the cap.
  • the subsequent application may also involve gluing a printed decal to the outside of the cap.
  • a drawback of this alternative is that the print or decal applied afterwards has a tendency to be worn off in connection with use and storing of the hearing protector in the user's locker. Above all the print or decal is worn when the user puts away the hearing protector or carries it hooked to his belt. Other occasions when the print or decal is worn is, for instance, in connection with the performance of certain welding, grinding and blasting operations and in the subsequent cleaning of the hearing protector. Exposure to the sun in outdoor work may also accelerate the reduction of the quality of the print or decal.
  • U.S. Pat. No. 6,151,717 should be mentioned in the context.
  • This publication discloses a hearing protector which is produced focusing on a very specific requirement.
  • the publication discloses a cap provided with a window portion made of an optical material which lets through rays of light in such a manner that the human eye can see through the material to such an extent that an earplug inserted into the ear can be discovered visually.
  • the requirement in this case is that a foreman, safety representative or like person should be able to discover whether the user of the hearing protector provided with a window also uses earplugs in the cases where this is stipulated by laws or other rules, without the user having to remove the outer hearing protector, which would mean that the user would have to interrupt his work and besides run the risk of hearing impairment.
  • this publication does not offer a solution to the above problem regarding how to provide, in a cost-effective and technically suitable manner, hearing protectors with information that is specific to the customer or the manufacturing company.
  • this object is achieved by a cap of the type stated by way of introduction and given the characteristic features that the cap is arranged to support at least one object or layer on the side of the cap shell which, in use of the cap, is arranged to face the user, and that said object or layer is visible through the cap shell.
  • cap shells can be mass-produced without a customer-specific distinction between them and a technically suitable manner of applying the specific information is achieved since the information, for instance in the form of a printed logotype or decal, is protected by the cap shell and thus is not worn off in the manner as is a print or decal subsequently applied to the outside.
  • information is meant different types of information, such as text, numerals, figures, patterns, color coding or some other type of visual distinction that is visible through the cap shell and that can be used to communicate a message to the user and to other people in the surroundings of the user.
  • the different types of information can also be combined with each other; advantageously it is possible to use, for instance, some kind of raised pattern from the molding of the cap shell in combination with a partly translucent decal which contains text and picture and the colors of which are intensified by a colored varnish which is applied to the inside of the cap shell and the decal so that the color of the varnish is visible through the decal and the cap shell and respectively through the cap shell itself in areas outside the decal.
  • the inventive cap can also be designed significantly more freely with regard to considerations of the design compared with conventional caps where any prints that are desirable in terms of design are quickly worn off.
  • Said objects or layers may also comprise reflectors or light-reflecting material in the cap. Since different types of reflectors can be arranged in the cap, it is possible to maintain large series of cap shells and nevertheless supply small series of special caps with reflectors of different colors.
  • the cap shell including its see-through portion is advantageously made of a polymer material. In this manner, it is possible to use in a simple way conventional techniques to mold the cap shell to the desired shape.
  • said object or layer carries information, such as text, picture, color coding, luminous object or light-reflecting material.
  • information such as text, picture, color coding, luminous object or light-reflecting material.
  • said object or layer is supplied to the cap shell on the side of the cap shell which, in use of the cap, is arranged to face the user.
  • said object or layer is supplied to the cap shell on the side of the cap shell which, in use of the cap, is arranged to face the user.
  • said object is attached to the cap shell by said object being at least partly molded into the cap shell.
  • said object will be securely attached.
  • the molding into the cap shell helps to make the object distinctly visible through the cap shell.
  • the cap advantageously comprises a pad of a sound-absorbing material, which is made up of one or more elements and is arranged in the cap so as to substantially cover the user's external ear. In this way, a good sound-absorbing function of the cap is obtained.
  • said object comprises at least one vibration-damping weight element of the cap, said weight element being arranged so as to at least partly block an audio mode of vibration that would have existed in the cap in the absence of said weight element.
  • To block an audio mode of vibration means reducing or fully eliminating a resonance peak in the sound frequency spectrum. In this way, it is possible to drastically improve the damping capacity of the hearing protector for certain critical frequencies for which the cap otherwise runs the risk of having a relatively poor or even unsatisfactory damping.
  • the transparent cap shell results in extra safety for the user since he can check that the vibration-damping weight elements are properly attached to the cap shell.
  • the above object is also achieved by a method of producing a cap intended for use as hearing protection, comprising the steps of providing a cap shell at least partly made of a substantially transparent material, arranging at least one object or layer in the cap on the side of the cap shell which, in use of the cap, is arranged to face the user, said object or layer being visible through the cap shell.
  • the step of providing a cap shell advantageously comprises at least the steps of providing an openable and closable mold which in the closed state defines a cavity, supplying at least one substantially transparent polymer material in a moldable state to the cavity defined by the mold to produce a cap shell, and removing from the mold the cap shell produced in the mold.
  • caps can be produced in commercially effective and conventionally tested manufacturing processes at a commercially acceptable price and with satisfactory quality.
  • the method comprises the step of supplying, before the step of supplying a polymer material to the cavity, an object to the cavity, which object is arranged to be at least partly molded into the cap shell.
  • this promotes secure attachment of the object.
  • the object can advantageously be customer-specific or in some other way specifically designed in the portion which merely is intended to be seen through the cap shell and be standardized in the portion which is intended to be held by the mold in connection with the molding of the cap shell.
  • the above-mentioned method also comprises the step of supplying, after removing from the mold the cap shell produced in the mold, an object or layer on a side of the cap shell, which side is adapted to face the user, said object or layer being visible through the cap shell.
  • information can easily be supplied, which is specific, for instance, for one customer although the customer buys only a limited number of hearing protectors.
  • This information can be, for instance, a printed decal with the logotype of the company. It is also possible to use this method for applying a layer of colored varnish, fluorescent paint or varnish, or the like, to provide color coding of some kind. As mentioned above, this can also be used in combination with raised patterns, subsequent application of a decal or fixing an object by molding.
  • FIG. 1 is a cross-sectional view of a cap of a hearing protector according to a first embodiment.
  • FIG. 2 is a rear plan view of the cap shown in FIG. 1 and illustrates the cap as it appears when viewed from the outside.
  • FIG. 3 is an exploded view corresponding to FIG. 1 .
  • FIG. 4 is an isometric view of the cap shell in the first embodiment viewed from the outside.
  • FIG. 5 is an isometric view from the diametrically opposite direction in relation to FIG. 4 and shows the cap shell viewed from the inside.
  • FIG. 6 illustrates a hearing protector with a cap according to a second embodiment where the left cap is shown in the form of a cross-section.
  • FIG. 7 is an isometric view which shows an imaginary half of a cap shell corresponding to the cross-section in FIG. 6 of the complete cap.
  • FIG. 8 is a cross-sectional view of an injection mold intended for simultaneous production of two cap shells according to said second embodiment.
  • a hearing protector 1 comprises a headband 2 and two caps 3 a - b .
  • the headband 1 is intended to be placed over the user's head and the two caps 3 a - b are intended to be placed one on each side of the user's head so as to enclose both external ears of the user.
  • each cap 3 a - b comprises in turn a cap shell 4 , a sealing ring 5 and some kind of sound-absorbing material 6 arranged inside the cap 3 a - b .
  • a front plate 7 which is positioned between the cap shell 4 and the sealing ring 5 and which keeps the sound-absorbing material 6 in place inside the cap 3 a - b .
  • the sealing ring 5 is adapted to fit the head of the user.
  • the headband 2 also has the function of pressing the caps 3 a - b against the user's head with sufficient force to prevent air and sound from leaking in between the sealing ring 5 and the user's head.
  • the headband 2 allows the caps to be carried and is usually provided with two Y-shaped fork portions 1 a , 1 b .
  • the two legs extend on opposite sides of the respective caps 3 a - b .
  • the caps 3 a - b are in turn usually provided with two pins 8 a - b which extend from the respective caps 3 a - b and engage in a recess 1 c ( FIG. 6 shows only the right fork portion 1 a completely) in the corresponding leg of said fork portion 1 a - b .
  • the caps 4 a - b will be pivotally carried by the headband 2 .
  • cap and headband 1 There are a number of commercially available techniques of attaching the caps 3 a - b to the headband 1 , and therefore it is not considered necessary to describe this part of the construction in more detail.
  • the invention is not restricted to this type of connection between cap and headband but can be used with other types of connections.
  • One example of another connection comprises a fork on each side of the headband, which engage a fixing point located in the center of the cap.
  • Such constructions are commonly used when it is desirable for the user to carry the headband in different positions, such as on top of his head, behind the nape of his neck or under his chin.
  • the cap shell 4 is made of a transparent material.
  • the cap 3 a - b is also arranged to carry at least one object 9 , which may be in the form of a layer, on a front surface 30 of a rear R wall 32 of cap shell 4 . Since the cap shell 4 is made of a transparent material, said object 9 is visible through the cap shell rear wall 4 .
  • the sealing ring 5 ( FIG. 1 ) lies at a front F end of the cap.
  • the shell has a rear R wall 32 , and has a top wall 40 , a bottom wall 42 , and opposite side walls 44 .
  • the seal 5 lies at the front end of the cap.
  • Preferred materials for use in the production of said cap shells are clear amorphous polymers and crystalline PP (polypropylene). These materials provide a transparence or see-through effect which is satisfactory for this purpose.
  • Especially preferred materials in this group are PP (polypropylene), ABS (acrylonitrile-butadiene-styrene copolymer), SBS (styrene-butadiene-based thermoplastic elastomer), MBS (methyl-methacrylate-butadiene-styrene), PC (polycarbonate resin), PET (polyethylene terephthalate) and PMMA (methyl-methacrylate resin). These can be used in injection molding of the cap shell 4 more or less directly according to conventional methods.
  • FIGS. 2-5 show an example of an object in the form of a substantially rectangular decal 9 which carries text 10 and a picture 11 .
  • the decal is arranged on the inside, or forward surface 30 of the shell rear wall 32 of the cap shell 4 .
  • FIGS. 4 and 5 show the technique of drawing.
  • the technique of drawing requires a transition of radius 4 c ( FIG. 4 ) in the center of the cap shell 4 .
  • this transition of radius 4 c has been maintained since it illustrates the location of the decal 9 in relation to the cap shell 4 .
  • FIG. 4 this transition of radius 4 c has been maintained since it illustrates the location of the decal 9 in relation to the cap shell 4 .
  • the decal 9 is substantially opaque or non-transparent, which is made clear by the transition of radius 4 c being visible from the inside of the cap shell 4 but being covered by the decal 9 so as not to be partially seen any longer in the center of the cap shell 4 .
  • the decal 9 can also be made of a material which is more or less transparent.
  • the text or picture can also be more or less transparent. Since the object 9 is mounted in the shell, information carried by the object can be seen before a worker chooses the hearing protector to wear.
  • the decal 9 is substantially translucent and provided with a print in the form of a logotype or text.
  • the inside of the cap shell 4 and, thus, the back of the decal 9 are coated with a colored varnish or the like which is visible through the decal 9 and the cap shell 4 .
  • the front of the decal 9 faces away from the shell rear wall 32 .
  • the rear of the decal 9 refers to the side which faces the cap shell 4 and which is visible through the cap shell rear wall 32 when non-see-through decals 9 are involved.
  • non-see-through decals 9 it is in many cases desirable to apply a layer of colored or transparent varnish to the inside of the cap shell since this improves the attachment of the decal 9 and protects it from being unintentionally affected, such as dried up, which may result in discoloration of the decal and print, and the adhesive, by which the decal is attached to the cap shell, losing its adhesivity.
  • the inside of the cap shell can be coated with a first layer of varnish and immediately after that the decal is applied before the layer of varnish has dried, thus using the layer of varnish as adhesive for the decal.
  • this direct contact reduces the risk of undesirable light refraction phenomena.
  • the inside of the cap shell can then be coated with another layer that encapsulates the decal.
  • the word varnish has been used for the substance that is applied as a layer.
  • the layer can involve different types of paint or other substances that can be applied, for example, in the form of liquid or aerosol (such as spray paint).
  • the layer may also consist of a second layer of plastic material which is applied, for instance, in a second injection-molding step.
  • the varnish, the paint or the plastic may carry optional types of color pigments or other types of components which produce an effect that is visible through the cap shell.
  • An example of such components is the type of pigment flakes that is used in what is referred to as metallic paint in car painting.
  • lacquer or paint that crackles in drying.
  • such a crackled lacquer or paint is coated with another layer of lacquer or paint on the inside of the cap shell.
  • the text and picture shown in FIG. 2 need not necessarily be applied by means of a printed decal but can also be printed directly on the inside of the cap shell 4 and preferably after that be coated with a lacquer on the inside of the cap shell 4 in the same way as described in connection with the decal 9 .
  • FIG. 6 illustrates another embodiment where the object 9 visible through the cap shell is partly molded into the cap shell 4 . This is provided, for example, by said object 9 being placed in the mold 20 which is used for injection molding of the cap shell 4 . Such a mold is shown in FIG. 8 .
  • the mold 20 defines two cavities 21 a - b , to which plastic is adapted to be supplied to form two cap shells 4 a - b .
  • the boundary surfaces of the cavities 21 a - b are formed by outer molds 22 a - b and inner molds 23 a - b .
  • the plastic is supplied through a runner 24 to the interior of the mold 20 and to the two cavities 21 a - b .
  • FIG. 8 shows how the inner mold 23 a - b has been adjusted so as to each comprise a specially designed inner part 25 a - b which in turn comprises a holder 26 a - b .
  • the holder 26 a - b is arranged to hold an object 9 in the correct position in the cavity 21 a - b so that the object 9 is partly molded into the cap shell 4 a - b as the plastic is supplied to the cavity 21 a - b through said runner 24 .
  • the inner molds 23 a - b have further been formed with an annular recess 27 a - b which extends around each of said objects 9 .
  • the recesses 27 a - b will be filled with plastic and the cap shell 4 will thus be formed with an edge 28 extending around each of said objects 9 (see FIG. 7 ).
  • the object 9 is provided with a pin 29 with which said holder 26 a - b is arranged to engage to keep the object 9 in place in the cavities 21 a - b.
  • the sound-absorbing material 9 is usually made of foam plastic, glass down, fibre cloth or textile forming a non-see-through pad.
  • the sound-absorbing material is porous and has a certain thickness, there are formed, for a ray of light directed through the sound-absorbing material, a large number of boundary layers between materials with different refractive indices or materials and air with different refractive indices. Therefore the sound-absorbing material will not be transparent whether the material from which the individual fibers are made or the material which is foamed is transparent or not. Only extremely thin materials would be translucent but they would not serve an acoustic purpose.
  • the object 9 shown in FIG. 7 comprises an encapsulated printed circuit card with a battery, a control circuit and one or more lamps or diodes facing the cap shell 4 so as to be visible through the cap shell 4 .
  • the cap shell 4 is advantageously made by injection molding or the like and has there been provided with an edge 28 that forms a space in which said encapsulated printed circuit card is arranged to be secured by a tight fit or the like.
  • the object 9 comprises a reflector which is attached to the cap by an adhesive, by being screwed or riveted at certain points or by being clamped, for instance between the cap shell and an edge of the bottom plate, in mounting of the cap.
  • the reflector 9 can have different sizes, shapes or colors, which in itself can be intended to communicate a quantity of information.
  • the reflector can also be secured to the cap shell in the way shown in FIG. 7 by a subsequent tight fit or by being located in the mold in injection molding of the cap shell.
  • said object 9 of the caps 4 a - b also has the function of serving as a vibration-damping weight element which is arranged so as to at least partly block an audio mode of vibration that would have existed in the cap in the absence of said weight element.
  • an audio mode of vibration is a resonance peak in a sound frequency spectrum, i.e. a state of the cap in which the cap oscillates or vibrates in resonance with an incoming sound wave.
  • To block an audio mode of vibration implies as stated above to reduce or eliminate a resonance peak in the sound frequency spectrum.
  • the weight element 9 is arranged by being partly molded into the cap shell 4 . Especially at the higher frequencies, from about 1 kHz upwards, vibrations occur in precisely the cap shell 4 of the cap owing to noise from the environment. By arranging the weight element 9 in the cap shell 4 , it is possible to prevent the cap shell 4 from exhibiting certain undesirable natural frequencies around which it could otherwise come into resonance with incoming noise.
  • the weight element 9 advantageously has a density that is higher than the density of the rest of the cap shell 4 . As a result, effective resonance absorption is achieved with a relatively small volume of the weight element 9 .
  • the difference in density can be provided by the weight element 9 being made of a heavy material such as metal, preferably zinc or a zinc alloy, while the cap shell 4 is in a conventional way made of plastic.
  • Zinc has like many other metals, such as iron, a significantly higher density than plastic (in the order of seven times higher).
  • zinc is relatively easy to form to the desired shape.
  • the forming of the weight element 9 can occur by, for instance, die casting, punching, forging, turning, milling, drilling or die stamping, thereby achieving complex shapes for continued production.
  • the object can on the side facing the cap shell 4 (and thus being visible through the same) be provided with a print, a raised logotype or the like. Since the cap shell is see-through, the user can also by ocular inspection verify that the weight element is attached to the cap and, thus, reduce the risk of discomfort or impaired hearing.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Vascular Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • Biophysics (AREA)
  • Otolaryngology (AREA)
  • Psychology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Helmets And Other Head Coverings (AREA)
  • Headphones And Earphones (AREA)
  • Closures For Containers (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Casings For Electric Apparatus (AREA)
US11/635,863 2004-06-16 2006-12-08 Cap for hearing protection Abandoned US20070157365A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE0401537-6 2004-06-16
SE0401537A SE528339C2 (sv) 2004-06-16 2004-06-16 Kåpa avsedd att användas som hörselskydd samt sätt att framställa densamma
PCT/SE2005/000924 WO2005122983A1 (en) 2004-06-16 2005-06-16 Cap for use as hearing protection and method for producing the same

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2005/000924 Continuation-In-Part WO2005122983A1 (en) 2004-06-16 2005-06-16 Cap for use as hearing protection and method for producing the same

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US20070157365A1 true US20070157365A1 (en) 2007-07-12

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US11/635,863 Abandoned US20070157365A1 (en) 2004-06-16 2006-12-08 Cap for hearing protection

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US (1) US20070157365A1 (sv)
EP (1) EP1755508B1 (sv)
JP (1) JP2008502419A (sv)
CN (1) CN100418500C (sv)
AT (1) ATE484265T1 (sv)
AU (1) AU2005253913B2 (sv)
DE (1) DE602005024131D1 (sv)
SE (1) SE528339C2 (sv)
WO (1) WO2005122983A1 (sv)

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CN106454682A (zh) * 2016-09-23 2017-02-22 追求电子科技（苏州）有限公司 一种耳机头制造工艺
CN108134977A (zh) * 2018-01-02 2018-06-08 菏泽韩升元电子股份有限公司 耳机头制造工艺
USD856594S1 (en) * 2017-10-27 2019-08-13 Honeywell International Inc. Pair of ear muffs
RU2713042C1 (ru) * 2016-06-29 2020-02-03 3М Инновейтив Пропертиз Компани Способ модификации устройства для защиты органов слуха и устройство для защиты органов слуха
USD939779S1 (en) * 2019-02-20 2021-12-28 Honeywell International Inc. Hearing protection device
USD942089S1 (en) * 2019-02-20 2022-01-25 Honeywell International Inc. Hearing protection device
USD956363S1 (en) * 2020-10-17 2022-06-28 Ningbo Albert Novosino Co. Ltd. Earmuff
USD956364S1 (en) * 2020-10-17 2022-06-28 Ningbo Albert Novosino Co. Ltd. Earmuff

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EP3713531A4 (en) 2017-11-21 2021-10-06 3M Innovative Properties Company PADDING FOR EAR PROTECTION OR AN AUDIO HEADSET
JP7358895B2 (ja) 2019-10-08 2023-10-11 株式会社Ｊｖｃケンウッド イヤーマフ
CN110801073A (zh) * 2019-11-13 2020-02-18 山东大学 一种适用于隧道施工的多功能保护装置

Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1988880A (en) * 1932-10-29 1935-01-22 Anna B Strouse Sound deadener
US2883671A (en) * 1957-08-30 1959-04-28 Mine Safety Appliances Co Device for protecting ears from noise
US5003631A (en) * 1989-10-05 1991-04-02 Northrop Corporation Flight helmet with headset
US5551090A (en) * 1995-04-20 1996-09-03 Thompson; Janet M. Ear protecting apparatus
US5718002A (en) * 1997-01-07 1998-02-17 Pavlak; Ronald M. Hearing protective eyewear
US6151717A (en) * 1999-07-20 2000-11-28 Aearo Company Transparent or translucent earmuff cup
US6364237B1 (en) * 2000-06-16 2002-04-02 Perfect Promotional Products Retractable badgeholder with spinning display
US6557186B1 (en) * 2002-04-02 2003-05-06 John W Purnell Lightweight protective ear guard
US6638188B2 (en) * 2000-05-05 2003-10-28 Arthur Kleinpell Practice hockey puck
US6832663B2 (en) * 2001-08-27 2004-12-21 Natus Medical Inc. Ear coupler
US7022387B1 (en) * 2004-01-08 2006-04-04 Dwight Fertig Decorative glass block and method for making a decorative glass block
US7020902B1 (en) * 2003-09-26 2006-04-04 Paul Tyler Heated ear guard
US20070143907A1 (en) * 2004-06-16 2007-06-28 Fredrik Hansson Cap for use as hearing protection
US20070245459A1 (en) * 2006-04-17 2007-10-25 Marsha Hillman-Schwartz Cover for protecting an ear
US7367422B2 (en) * 2004-05-21 2008-05-06 Brookstone Purchasing. Inc. System and method for providing passive noise reduction
US20080276398A1 (en) * 2007-04-12 2008-11-13 Puneet Nanda Illuminated flashing toothbrush and method of use
US20090013448A1 (en) * 2007-07-11 2009-01-15 Lonnie Drosihn Accessory with Light Source

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6061889U (ja) * 1983-10-05 1985-04-30 株式会社テクニトロン ヘツドホン
US4658931A (en) * 1985-06-11 1987-04-21 Curry David G Evacuated plenum hearing protection
GB8818345D0 (en) * 1988-08-02 1988-09-07 Hellberg Protection Ltd Eye & hearing protection
CN2076834U (zh) * 1990-08-14 1991-05-15 曹永生 多功能抗噪声耳罩
JPH09310218A (ja) * 1996-05-17 1997-12-02 Dainippon Ink & Chem Inc ヘルメット
JPH10165544A (ja) * 1996-12-06 1998-06-23 Bridgestone Sports Co Ltd ラケット用エンドキャップ
JP2000062045A (ja) * 1998-08-20 2000-02-29 Okamoto Ind Inc 長靴及びその製造方法
US6089233A (en) * 1998-09-29 2000-07-18 Safe Dive Ltd. Diving mask supplemented with a device for equalizing pressure across the eardrum of divers
JP2001211491A (ja) * 2000-01-28 2001-08-03 Vires:Kk イヤホンマイク
US6888950B2 (en) * 2002-07-02 2005-05-03 Jovid Designs, Llc Ear warming article including electronic device and easily interchangeable advertising areas

Patent Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1988880A (en) * 1932-10-29 1935-01-22 Anna B Strouse Sound deadener
US2883671A (en) * 1957-08-30 1959-04-28 Mine Safety Appliances Co Device for protecting ears from noise
US5003631A (en) * 1989-10-05 1991-04-02 Northrop Corporation Flight helmet with headset
US5551090A (en) * 1995-04-20 1996-09-03 Thompson; Janet M. Ear protecting apparatus
US5718002A (en) * 1997-01-07 1998-02-17 Pavlak; Ronald M. Hearing protective eyewear
US6151717A (en) * 1999-07-20 2000-11-28 Aearo Company Transparent or translucent earmuff cup
US6638188B2 (en) * 2000-05-05 2003-10-28 Arthur Kleinpell Practice hockey puck
US6364237B1 (en) * 2000-06-16 2002-04-02 Perfect Promotional Products Retractable badgeholder with spinning display
US6832663B2 (en) * 2001-08-27 2004-12-21 Natus Medical Inc. Ear coupler
US6557186B1 (en) * 2002-04-02 2003-05-06 John W Purnell Lightweight protective ear guard
US7020902B1 (en) * 2003-09-26 2006-04-04 Paul Tyler Heated ear guard
US7022387B1 (en) * 2004-01-08 2006-04-04 Dwight Fertig Decorative glass block and method for making a decorative glass block
US7367422B2 (en) * 2004-05-21 2008-05-06 Brookstone Purchasing. Inc. System and method for providing passive noise reduction
US20070143907A1 (en) * 2004-06-16 2007-06-28 Fredrik Hansson Cap for use as hearing protection
US20070245459A1 (en) * 2006-04-17 2007-10-25 Marsha Hillman-Schwartz Cover for protecting an ear
US7614089B2 (en) * 2006-04-17 2009-11-10 Kari A. Heitzner Cover for protecting an ear
US20080276398A1 (en) * 2007-04-12 2008-11-13 Puneet Nanda Illuminated flashing toothbrush and method of use
US20090013448A1 (en) * 2007-07-11 2009-01-15 Lonnie Drosihn Accessory with Light Source

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2713042C1 (ru) * 2016-06-29 2020-02-03 3М Инновейтив Пропертиз Компани Способ модификации устройства для защиты органов слуха и устройство для защиты органов слуха
US10561532B2 (en) 2016-06-29 2020-02-18 3M Innovative Properties Company Method of retrofitting a hearing protector, and a hearing protector
CN106454682A (zh) * 2016-09-23 2017-02-22 追求电子科技（苏州）有限公司 一种耳机头制造工艺
USD856594S1 (en) * 2017-10-27 2019-08-13 Honeywell International Inc. Pair of ear muffs
CN108134977A (zh) * 2018-01-02 2018-06-08 菏泽韩升元电子股份有限公司 耳机头制造工艺
USD939779S1 (en) * 2019-02-20 2021-12-28 Honeywell International Inc. Hearing protection device
USD942089S1 (en) * 2019-02-20 2022-01-25 Honeywell International Inc. Hearing protection device
USD960459S1 (en) * 2019-02-20 2022-08-09 Honeywell International Inc. Hearing protection device
USD956363S1 (en) * 2020-10-17 2022-06-28 Ningbo Albert Novosino Co. Ltd. Earmuff
USD956364S1 (en) * 2020-10-17 2022-06-28 Ningbo Albert Novosino Co. Ltd. Earmuff

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ATE484265T1 (de) 2010-10-15
EP1755508B1 (en) 2010-10-13
DE602005024131D1 (de) 2010-11-25
CN1972652A (zh) 2007-05-30
SE0401537L (sv) 2005-12-17
CN100418500C (zh) 2008-09-17
AU2005253913A1 (en) 2005-12-29
JP2008502419A (ja) 2008-01-31
EP1755508A1 (en) 2007-02-28
SE0401537D0 (sv) 2004-06-16
WO2005122983A1 (en) 2005-12-29
SE528339C2 (sv) 2006-10-24

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