GB120253A - Improvements in or relating to Acoustic Transmission Apparatus. - Google Patents
Improvements in or relating to Acoustic Transmission Apparatus.Info
- Publication number
- GB120253A GB120253A GB1584317A GB1584317A GB120253A GB 120253 A GB120253 A GB 120253A GB 1584317 A GB1584317 A GB 1584317A GB 1584317 A GB1584317 A GB 1584317A GB 120253 A GB120253 A GB 120253A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ear
- fitted
- speaking
- piece
- relating
- 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
- A42—HEADWEAR
- A42B—HATS; HEAD COVERINGS
- A42B3/00—Helmets; Helmet covers ; Other protective head coverings
- A42B3/04—Parts, details or accessories of helmets
- A42B3/30—Mounting radio sets or communication systems
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/18—Methods or devices for transmitting, conducting or directing sound
- G10K11/22—Methods or devices for transmitting, conducting or directing sound for conducting sound through hollow pipes, e.g. speaking tubes
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Helmets And Other Head Coverings (AREA)
Abstract
120,253. Walls, R. R. Oct. 30, 1917 Speaking-tubes.-The helmet or head-gear a cf an aviator's speaking-tube is fitted with an earpiece or ear-pieces b adapted to enter the ear passage and to fit closely against the ear. The ear-piece comprises a flange b of rubber or like material provided with a flexible tubular projection b<1> for insertion into the ear passage, and with a connecting-piece d to receive a flexible speaking- tube e, the opposite end of which is fitted with a mouthpiece c. The flange b is fitted to and embedded in the helmet a and forms a sound insulator and ear protector. The mouth-piece c is shaped to fit the face and is edged with rubber, leather, &c. c<1>. When not in use, it is suspended in a bracket h.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1584317A GB120253A (en) | 1917-10-30 | 1917-10-30 | Improvements in or relating to Acoustic Transmission Apparatus. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1584317A GB120253A (en) | 1917-10-30 | 1917-10-30 | Improvements in or relating to Acoustic Transmission Apparatus. |
Publications (1)
Publication Number | Publication Date |
---|---|
GB120253A true GB120253A (en) | 1918-10-30 |
Family
ID=32672130
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1584317A Expired GB120253A (en) | 1917-10-30 | 1917-10-30 | Improvements in or relating to Acoustic Transmission Apparatus. |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB120253A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0076946A2 (en) * | 1981-10-12 | 1983-04-20 | HAUNI-WERKE KÖRBER & CO. KG. | Safety helmet for motor cyclists |
FR2545635A1 (en) * | 1983-05-04 | 1984-11-09 | Fernandez Michel | Simple miracle listening device |
FR2638071A1 (en) * | 1988-10-22 | 1990-04-27 | Draegerwerk Ag | LISTENING DEVICE FOR A PROTECTIVE HELMET |
-
1917
- 1917-10-30 GB GB1584317A patent/GB120253A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0076946A2 (en) * | 1981-10-12 | 1983-04-20 | HAUNI-WERKE KÖRBER & CO. KG. | Safety helmet for motor cyclists |
EP0076946A3 (en) * | 1981-10-12 | 1984-01-11 | HAUNI-WERKE KÖRBER & CO. KG. | Safety helmet for motor cyclists |
US4473130A (en) * | 1981-10-12 | 1984-09-25 | Hauni-Werke Korber & Co. Kg. | Crash helmet with communication system |
FR2545635A1 (en) * | 1983-05-04 | 1984-11-09 | Fernandez Michel | Simple miracle listening device |
FR2638071A1 (en) * | 1988-10-22 | 1990-04-27 | Draegerwerk Ag | LISTENING DEVICE FOR A PROTECTIVE HELMET |
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