GB1567408A - Electroacoustic transducers - Google Patents

Electroacoustic transducers Download PDF

Info

Publication number
GB1567408A
GB1567408A GB40509/77A GB4050977A GB1567408A GB 1567408 A GB1567408 A GB 1567408A GB 40509/77 A GB40509/77 A GB 40509/77A GB 4050977 A GB4050977 A GB 4050977A GB 1567408 A GB1567408 A GB 1567408A
Authority
GB
United Kingdom
Prior art keywords
backplate
transducer
circuitry
conductive
diaphragm
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
GB40509/77A
Other languages
English (en)
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of GB1567408A publication Critical patent/GB1567408A/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
    • H04R19/00—Electrostatic transducers
    • H04R19/01—Electrostatic transducers characterised by the use of electrets

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
GB40509/77A 1976-10-01 1977-09-29 Electroacoustic transducers Expired GB1567408A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/728,604 US4046974A (en) 1976-10-01 1976-10-01 Electroacoustic transducer with springs forming electrical interconnections as a result of assembly

Publications (1)

Publication Number Publication Date
GB1567408A true GB1567408A (en) 1980-05-14

Family

ID=24927526

Family Applications (1)

Application Number Title Priority Date Filing Date
GB40509/77A Expired GB1567408A (en) 1976-10-01 1977-09-29 Electroacoustic transducers

Country Status (4)

Country Link
US (1) US4046974A (US20030199744A1-20031023-C00003.png)
JP (1) JPS5343514A (US20030199744A1-20031023-C00003.png)
CA (1) CA1082350A (US20030199744A1-20031023-C00003.png)
GB (1) GB1567408A (US20030199744A1-20031023-C00003.png)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999039543A1 (en) * 1998-01-29 1999-08-05 Emf Acoustics Oy Ltd. Vibration transducer unit

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5754399Y2 (US20030199744A1-20031023-C00003.png) * 1978-02-20 1982-11-25
NL7802688A (nl) * 1978-03-13 1979-09-17 Philips Nv Inrichting voor het omzetten van akoestische in elektrische trillingen en omgekeerd, voor- zien van tenminste een kondensator elektreet- element aangesloten op een elektronische schakeling.
US4443666A (en) * 1980-11-24 1984-04-17 Gentex Corporation Electret microphone assembly
US4436648A (en) * 1980-12-22 1984-03-13 Bell Telephone Laboratories, Incorporated Electrically conducting thermoplastic material, its manufacture, and resulting article
US4492825A (en) * 1982-07-28 1985-01-08 At&T Bell Laboratories Electroacoustic transducer
GB2234135A (en) * 1989-07-21 1991-01-23 Micro Metallic Ltd Improved electrode and method of production thereof
JP2007043327A (ja) * 2005-08-01 2007-02-15 Star Micronics Co Ltd コンデンサマイクロホン
US10856084B2 (en) 2016-03-04 2020-12-01 Frank Joseph Pompei Ultrasonic transducer with tensioned film
JP7130980B2 (ja) 2018-02-22 2022-09-06 横河電機株式会社 ハウジング

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3430146A (en) * 1966-11-02 1969-02-25 Admiral Corp Remote control microphone biasing circuit
US3663768A (en) * 1971-01-15 1972-05-16 Northern Electric Co Electret transducer
US3816671A (en) * 1972-04-06 1974-06-11 Thermo Electron Corp Electret transducer cartridge and case

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999039543A1 (en) * 1998-01-29 1999-08-05 Emf Acoustics Oy Ltd. Vibration transducer unit
US6336367B1 (en) 1998-01-29 2002-01-08 B-Band Oy Vibration transducer unit

Also Published As

Publication number Publication date
CA1082350A (en) 1980-07-22
US4046974A (en) 1977-09-06
JPS5337737B2 (US20030199744A1-20031023-C00003.png) 1978-10-11
JPS5343514A (en) 1978-04-19

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee