GB2113530A - Ear defender and diaphragm therefor - Google Patents
Ear defender and diaphragm therefor Download PDFInfo
- Publication number
- GB2113530A GB2113530A GB08202379A GB8202379A GB2113530A GB 2113530 A GB2113530 A GB 2113530A GB 08202379 A GB08202379 A GB 08202379A GB 8202379 A GB8202379 A GB 8202379A GB 2113530 A GB2113530 A GB 2113530A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diaphragm
- ear
- ear defender
- defender
- lip
- 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.)
- Withdrawn
Links
- 239000004020 conductor Substances 0.000 abstract description 3
- 229920001971 elastomer Polymers 0.000 abstract description 3
- 239000000463 material Substances 0.000 description 5
- 238000009413 insulation Methods 0.000 description 4
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 229920002457 flexible plastic Polymers 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 210000004243 sweat Anatomy 0.000 description 1
Classifications
-
- 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
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Acoustics & Sound (AREA)
- Biophysics (AREA)
- Otolaryngology (AREA)
- Psychology (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Headphones And Earphones (AREA)
- Soundproofing, Sound Blocking, And Sound Damping (AREA)
- Telephone Set Structure (AREA)
Abstract
An Ear Defender has a cup shaped body (12) in which a cup shaped diaphragm (13) of poor sound conducting material, such as rubber, is located to provide a sound insulating chamber.The lip (16) of the diaphragm is fixed to the rim of the body (12) by annular clamping plate (14) which also provides a retaining edge for a loosly located foamed pad (21). <IMAGE>
Description
1
GB 2 113 530 A
1
SPECIFICATION
Ear defender and diaphragm therefor
5 This invention relates to Ear Defenders and diaphragms therefor.
Commonly an Ear Defender comprises a cup shaped body filled with foam material to provide sound insulation. The rigid plastics material from 10 which the body is made conducts sound through it.
An object of the present invention is to provide an Ear Defender having improved sound insulation.
Accordingly the invention provides an Ear Defender comprising a cup shaped body and a flexible 15 diaphragm mounted on the body to form a sound insulation air chamber within the body.
The invention extends to a diaphragm for mounting on the cup shaped body of an Ear Defender.
The diaphragm is preferably made of material 20 which is a poor conductor of sound, preferably of rubber, flexible plastics such as polyurethane or coated cloth material, for example, woven cotton dipped in polyvinyl-chloride.
The rim or lip of the diaphragm may be held 25 between the rim of the body and an annular clamping plate secured thereto to produce a semi-sealed air chamber.
One embodiment of Ear Defnder in accordance with the invention will now be described, by way of 30 example only, with reference to the accompanying drawings of which
Figure 1 is a plan view of a diaphragm in an Ear Defender with the clamping plate removed,
Figure 2 is a section on the line ll-ll of Figure 1 with 35 the clamping plate in position, and
Figure 3 is a section on the line Ill-Ill of Figure 1 with the clamping plate in position.
The Ear Defender comprises a rigid plastics cup shaped body 12, a rubber diaphragm 13 and an 40 annular clamping plate 14. The diaphragm is itself of dished or bowl shape having a substantially planar base portion 15joined to a parallel planar outwardly turned lip portion 16 by sloping walls 17.
The lip 16 of the diaphragm is clamped between 45 the rim of the body and the annular plate 14 which is held to the body by three screws at positions 18. A sound insulating air chamber 19 is formed in the body between the diaphragm and the body. The lip 16 provides sound insulating material between the 50 body and the plate 14 which in use is held against the head surrounding the ear.
The base of the diaphragm extends more than half way into the depth of the body so as to provide adequate space 20 for an ear. The plate 14 defines an 55 oval opening forthe ear of smaller dimensions than the oval inner edge of the lip and a foamed plastics material pad 21 is loosely located in the space 20 with its ends tucked under the overhanging inner edge of the plate. This pad readily absorbs dirt such 60 as dust or sweat in use and can be frequently changed.
The diaphragm has a thickness of 2 mm, this thickness preferably being in the range 1.5 mm. to 2.5 mm.
65 Aperture 22 is for fixing the body to a headband. CLAIMS (Filed 8/12/82)
1. An Ear Defender comprising a cup shaped body adapted to fit around a human ear and a flexible diaphragm mounted in the body to form a
70 sound insulation air chamber within the body.
2. An Ear Defender according to Claim 1 in which the diaphragm is made of a material which is a poor sound conductor.
3. An Ear Defender according to Claim 1 or Claim 75 2 in which the diaphragm is itself dished or bowl shaped.
4. An Ear Defender according to Claim 3 in which the diaphragm has a substantially planar base portion joined to a substantially planar parallel
80 outwardly turned lip by intermediate walls.
5. An Ear Defender according to Claim 3 or Claim 4 in which the base of the diaphragm extends more than halfway into the depth of the body.
6. An Ear Defender according to any of Claims 1 85 to 5 in which the diaphragm has a lip secured to the rim of the body by a clamping member.
7. An Ear Defender according to Claim 6 in which the clamping member defines an opening for an ear which is smaller than the opening defined by the
90 inner edge of the lip so as to provide an overlapping retaining edge.
8. An Ear Defender according to Claim 7 including an attenuating pad loosely located in the diaphragm and retained by the retaining edge.
95 9. A diaphragm for use in an Ear Defender according to any of the preceding claims.
10. A diaphragm for use in an Ear Defender substantially as described herein with reference to or as illustrated in the accompanying drawings. 100 11. An Ear Defender substantially as described herein with reference to or as illustrated in the accompanying drawings.
Printed for Her Majesty's Stationery Office by The Tweeddale Press Ltd., Berwick-upon-Tweed, 1983.
Published at the Patent Office, 25 Southampton Buildings, London, WC2A1 AY, from which copies may be obtained.
The drawings originally filed were informal and the print here reproduced is taken from a later filed formal copy.
This print embodies corrections made under Section 117(1) of the Patents Act 1977.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08202379A GB2113530A (en) | 1982-01-28 | 1982-01-28 | Ear defender and diaphragm therefor |
| EP83300385A EP0085533A3 (en) | 1982-01-28 | 1983-01-26 | Ear defender and diaphragm therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08202379A GB2113530A (en) | 1982-01-28 | 1982-01-28 | Ear defender and diaphragm therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB2113530A true GB2113530A (en) | 1983-08-10 |
Family
ID=10527927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08202379A Withdrawn GB2113530A (en) | 1982-01-28 | 1982-01-28 | Ear defender and diaphragm therefor |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0085533A3 (en) |
| GB (1) | GB2113530A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2402887A (en) * | 2003-06-19 | 2004-12-22 | William Alexander Cumming | Ear defender |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3516327A1 (en) * | 1985-05-07 | 1986-11-13 | OPTAC Verwaltung Wilfrid Weltin, 6074 Rödermark | Ear plug |
| NL8901482A (en) * | 1989-06-12 | 1991-01-02 | Focus Veilig Bv | HEARING PROTECTOR. |
| US9585792B2 (en) * | 2008-01-11 | 2017-03-07 | Jacob Frederick Fairclough | Sound muffling headwear |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB598030A (en) * | 1945-08-29 | 1948-02-09 | Hervic Nugent Grahame Cobbe | A sound-insulating device for use on the human head |
| DE31727C (en) * | B. gründler in Petersdorf bei Lagow | Hearing protectors | ||
| US1406425A (en) * | 1918-05-29 | 1922-02-14 | Blaine A Stair | Ear stopper |
| GB948053A (en) * | 1960-03-07 | 1964-01-29 | Clark Co Inc David | Improvements in ear protectors |
| US3335720A (en) * | 1965-06-02 | 1967-08-15 | Leonard Peter Frieder | Valve for sound attenuating device |
-
1982
- 1982-01-28 GB GB08202379A patent/GB2113530A/en not_active Withdrawn
-
1983
- 1983-01-26 EP EP83300385A patent/EP0085533A3/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2402887A (en) * | 2003-06-19 | 2004-12-22 | William Alexander Cumming | Ear defender |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0085533A2 (en) | 1983-08-10 |
| EP0085533A3 (en) | 1983-08-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |