GB443692A - Bone conduction audiphone - Google Patents
Bone conduction audiphoneInfo
- Publication number
- GB443692A GB443692A GB25692/35A GB2569235A GB443692A GB 443692 A GB443692 A GB 443692A GB 25692/35 A GB25692/35 A GB 25692/35A GB 2569235 A GB2569235 A GB 2569235A GB 443692 A GB443692 A GB 443692A
- Authority
- GB
- United Kingdom
- Prior art keywords
- casing
- cover
- secured
- jamaica
- sept
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R11/00—Transducers of moving-armature or moving-core type
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Battery Mounting, Suspending (AREA)
- Headphones And Earphones (AREA)
Abstract
443,692. Instruments for deaf persons. DICTOGRAPH PRODUCTS CO., Inc., 95, 149th Street, Jamaica, New York, U.S.A.- (Assignees of Koch, H. ; Jamaica, New York, U.S.A.) Sept. 16, 1935, No. 25692. Convention date, Sept. 22, 1934. [Class 40 (iv)] A hearing-aid apparatus for transmitting sound vibrations through the bone structure to the inner ear of the user comprises a relatively stiff reed 31 secured to a permanent bar-magnet 25 which is itself secured to a casing 10, for example by screws 24. Fixed to the magnet 25 is a pole-piece 27 carrying a speech coil 28 fed with current from a circuit including a battery and microphone. The vibrations of the reed 31 are transmitted to the casing 10 to which is secured a cover 11 which is placed against the mastoid bone of the user. Terminal members 14 for the leads are formed on contact plate members 13 inlaid flush with the cover 11 and having contacts 15 engaged by springs 16 and slidable plungers 17, 18 projecting into holes 19 into which are inserted prongs attached to the microphone apparatus. The casing 10 and cover 11 may be made of a non-resonant material such as hard-rubber or a synthetic resin. The instrument may be supported on the head by a flexible headband or may be provided with a handle.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US443692XA | 1934-09-22 | 1934-09-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB443692A true GB443692A (en) | 1936-03-04 |
Family
ID=21932001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB25692/35A Expired GB443692A (en) | 1934-09-22 | 1935-09-16 | Bone conduction audiphone |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE411317A (en) |
| FR (1) | FR795076A (en) |
| GB (1) | GB443692A (en) |
| NL (1) | NL42562C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140185837A1 (en) * | 2012-12-28 | 2014-07-03 | Panasonic Corporation | Bone conduction speaker and bone conduction headphone device |
-
0
- BE BE411317D patent/BE411317A/xx unknown
- NL NL42562D patent/NL42562C/xx active
-
1935
- 1935-09-16 GB GB25692/35A patent/GB443692A/en not_active Expired
- 1935-09-17 FR FR795076D patent/FR795076A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140185837A1 (en) * | 2012-12-28 | 2014-07-03 | Panasonic Corporation | Bone conduction speaker and bone conduction headphone device |
| US10469935B2 (en) * | 2012-12-28 | 2019-11-05 | Panasonic Intellectual Property Management Co., Ltd. | Bone conduction speaker and bone conduction headphone device |
Also Published As
| Publication number | Publication date |
|---|---|
| FR795076A (en) | 1936-03-03 |
| BE411317A (en) | |
| NL42562C (en) |
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