GB191505833A - A Sound Chamber for Thermic Telephones and the like Intended to be Introduced into the Auditory Passage. - Google Patents

A Sound Chamber for Thermic Telephones and the like Intended to be Introduced into the Auditory Passage.

Info

Publication number
GB191505833A
GB191505833A GB191505833DA GB191505833A GB 191505833 A GB191505833 A GB 191505833A GB 191505833D A GB191505833D A GB 191505833DA GB 191505833 A GB191505833 A GB 191505833A
Authority
GB
United Kingdom
Prior art keywords
passage
sound chamber
intended
auditory passage
telephones
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
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.)
DE NL THERMO TELEPHOON MIJ NV
Original Assignee
DE NL THERMO TELEPHOON MIJ NV
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 DE NL THERMO TELEPHOON MIJ NV filed Critical DE NL THERMO TELEPHOON MIJ NV
Publication of GB191505833A publication Critical patent/GB191505833A/en
Expired legal-status Critical Current

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
    • H04R23/00—Transducers other than those covered by groups H04R9/00 - H04R21/00
    • H04R23/002—Transducers other than those covered by groups H04R9/00 - H04R21/00 using electrothermic-effect transducer

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)

Abstract

5833. Naamlooze Vennootschap de Nederlandsche Thermo - Telephoon Maatschappij. Feb. 8, [Convention date]. Hot - wire receivers; earpieces. - T h e r m i c telephones a.nd other sound-producing instruments intended to be introduced into the auditory passage are formed with a sound chamber consisting of a round body 5 forming the main portion, and an auxiliary body 7 having the shape of the auditory passage, the two parts together closing the passage so as to prevent the intrusion of extraneous sounds. In the form shown, the part 7 normally covers an opening 6 in the part 5 so as to exclude dust &c., but is moved into the position shown in dotted lines on insertion in the ear. The part 7 is detachably connected to a spring 12 mounted in the part 5 by a. link 14 guided in a slot 9.
GB191505833D 1915-02-08 1915-04-19 A Sound Chamber for Thermic Telephones and the like Intended to be Introduced into the Auditory Passage. Expired GB191505833A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE191505833X 1915-02-08

Publications (1)

Publication Number Publication Date
GB191505833A true GB191505833A (en) 1916-04-19

Family

ID=32668491

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191505833D Expired GB191505833A (en) 1915-02-08 1915-04-19 A Sound Chamber for Thermic Telephones and the like Intended to be Introduced into the Auditory Passage.

Country Status (1)

Country Link
GB (1) GB191505833A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995015067A1 (en) * 1993-11-23 1995-06-01 Lux Wellenhof Gabriele Sheath for hearing aids, hearing aids or parts thereof provided therewith, hearing test process and device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995015067A1 (en) * 1993-11-23 1995-06-01 Lux Wellenhof Gabriele Sheath for hearing aids, hearing aids or parts thereof provided therewith, hearing test process and device

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