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
Application number
GB1584317A
Inventor
Robert Reid Walls
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1584317A priority Critical patent/GB120253A/en
Publication of GB120253A publication Critical patent/GB120253A/en
Expired legal-status Critical Current

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.
GB1584317A 1917-10-30 1917-10-30 Improvements in or relating to Acoustic Transmission Apparatus. Expired GB120253A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0076946A2 (en) * 1981-10-12 1983-04-20 HAUNI-WERKE KÖRBER &amp; 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

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0076946A2 (en) * 1981-10-12 1983-04-20 HAUNI-WERKE KÖRBER &amp; CO. KG. Safety helmet for motor cyclists
EP0076946A3 (en) * 1981-10-12 1984-01-11 HAUNI-WERKE KÖRBER &amp; 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

Similar Documents

Publication Publication Date Title
US2353070A (en) Headphone
US2377739A (en) Hearing aid
US3890474A (en) Sound amplitude limiters
US1668890A (en) Universal adjustable earpiece for audiphones
US4150262A (en) Piezoelectric bone conductive in ear voice sounds transmitting and receiving apparatus
TWI594639B (en) Headphone ear tips with sound conduit mounting structure
GB1334183A (en) Headset
EP0673587B1 (en) An ear microphone for insertion in the ear in connection with portable telephones or radios
JP2009232443A (en) Receiver
CN107005759A (en) Bone conduction earphone
US1329029A (en) Telephone apparatus
US2846521A (en) Dual channel headset
US2621751A (en) Earcap for earphones
US2476589A (en) Soundproof ear appliance
GB120253A (en) Improvements in or relating to Acoustic Transmission Apparatus.
GB549518A (en) Improvements in or relating to microphones
JP2017147533A (en) earphone
CN204291318U (en) A kind of open earpiece
US2476224A (en) Ear protector with adjustable anchoring means
US1321265A (en) Telephone receiver
GB139043A (en) Improvements in hearing appliances
GB751009A (en) Improvements in or relating to telephone handsets
US1382865A (en) Molded device
JPH07509200A (en) Microphone mask for divers
US935274A (en) Antiseptic protector for telephone transmitters or receivers.