GB948053A - Improvements in ear protectors - Google Patents
Improvements in ear protectorsInfo
- Publication number
- GB948053A GB948053A GB7955/60A GB795560A GB948053A GB 948053 A GB948053 A GB 948053A GB 7955/60 A GB7955/60 A GB 7955/60A GB 795560 A GB795560 A GB 795560A GB 948053 A GB948053 A GB 948053A
- Authority
- GB
- United Kingdom
- Prior art keywords
- shell
- transducer
- diaphragm
- ear
- sound
- 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.)
- Expired
Links
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
-
- 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
- A61F11/145—Protective devices for the ears external, e.g. earcaps or earmuffs electric, e.g. for active noise reduction
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)
Abstract
948,053. Earpieces. DAVID CLARK CO. Inc. March 7, 1960, No. 7955/60. Heading H4J. An ear protector comprises a substantially sound-proof shell 10, Figs. 1, 3, carrying a diaphragm 24 in which is mounted a transducer 26 which, in use with the ear protector surrounding the outer ear, converts sound energy received from the ear canal into electrical energy for transmission to a point outside the shell 10. The transducer may also be used as an earphone, a switch 32 switching from one function to the other. A band 14 of soft material contacts the head of the user. The shell 10 is in two parts secured together at flanges 18 by screws 20 or cement. The diaphragm 24 is a leather disc and is fixed between the flanges 18. The transducer 26 is held in the diaphragm 24 by a flange 28 on the transducer and a retaining ring 29. The shell 10 is lined with sound-deadening material. In a modification, Fig. 7, the shell 10 contains a microphone 36 and a receiver 38.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB7955/60A GB948053A (en) | 1960-03-07 | 1960-03-07 | Improvements in ear protectors |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB7955/60A GB948053A (en) | 1960-03-07 | 1960-03-07 | Improvements in ear protectors |
Publications (1)
Publication Number | Publication Date |
---|---|
GB948053A true GB948053A (en) | 1964-01-29 |
Family
ID=9842995
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7955/60A Expired GB948053A (en) | 1960-03-07 | 1960-03-07 | Improvements in ear protectors |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB948053A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5113202A (en) * | 1974-06-12 | 1976-02-02 | Akg Akustische Kino Geraete | |
EP0085533A2 (en) * | 1982-01-28 | 1983-08-10 | CHAPMAN & SMITH LIMITED | Ear defender and diaphragm therefor |
-
1960
- 1960-03-07 GB GB7955/60A patent/GB948053A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5113202A (en) * | 1974-06-12 | 1976-02-02 | Akg Akustische Kino Geraete | |
JPS5342401B2 (en) * | 1974-06-12 | 1978-11-11 | ||
EP0085533A2 (en) * | 1982-01-28 | 1983-08-10 | CHAPMAN & SMITH LIMITED | Ear defender and diaphragm therefor |
EP0085533A3 (en) * | 1982-01-28 | 1983-08-17 | CHAPMAN & SMITH LIMITED | Ear defender and diaphragm therefor |
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