CA953410A - Diaphragm assembly for electret transducer - Google Patents

Diaphragm assembly for electret transducer

Info

Publication number
CA953410A
CA953410A CA151,066A CA151066A CA953410A CA 953410 A CA953410 A CA 953410A CA 151066 A CA151066 A CA 151066A CA 953410 A CA953410 A CA 953410A
Authority
CA
Canada
Prior art keywords
diaphragm assembly
electret transducer
electret
transducer
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
CA151,066A
Other versions
CA151066S (en
Inventor
Elmer V. Carlson
Mead C. Killion
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.)
Industrial Research Products Inc
Original Assignee
Industrial Research Products 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 Industrial Research Products Inc filed Critical Industrial Research Products Inc
Application granted granted Critical
Publication of CA953410A publication Critical patent/CA953410A/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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
CA151,066A 1971-11-08 1972-09-06 Diaphragm assembly for electret transducer Expired CA953410A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US19659271A 1971-11-08 1971-11-08

Publications (1)

Publication Number Publication Date
CA953410A true CA953410A (en) 1974-08-20

Family

ID=22726015

Family Applications (1)

Application Number Title Priority Date Filing Date
CA151,066A Expired CA953410A (en) 1971-11-08 1972-09-06 Diaphragm assembly for electret transducer

Country Status (2)

Country Link
US (1) US3740496A (en)
CA (1) CA953410A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4861126A (en) * 1971-12-02 1973-08-27
US4160881A (en) * 1977-12-28 1979-07-10 Microtel B.V. Electret transducers: acoustically transparent backplate of sintered conductive spheres and a thin electret coating; meshlike diaphragm spacing screen overlays apertured electret backplate with screen junctions overlaying the apertures
US4321432A (en) * 1978-12-23 1982-03-23 Tokyo Shibaura Denki Kabushiki Kaisha Electrostatic microphone
US4418246A (en) * 1980-10-29 1983-11-29 Tibbetts Industries, Inc. Cell assembly for electret transducer
US4450930A (en) * 1982-09-03 1984-05-29 Industrial Research Products, Inc. Microphone with stepped response
US4598201A (en) * 1984-08-09 1986-07-01 Mine Safety Appliances Company Infrared fluid analyzer employing a pneumatic detector
US5335286A (en) * 1992-02-18 1994-08-02 Knowles Electronics, Inc. Electret assembly
FI115598B (en) * 1998-04-27 2005-05-31 Panphonics Oy Acoustic element
US7751579B2 (en) * 2003-06-13 2010-07-06 Etymotic Research, Inc. Acoustically transparent debris barrier for audio transducers

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2567889A (en) * 1950-02-24 1951-09-11 George L Carrington Condenser microphone structure
BE623239A (en) * 1961-10-04
DE1212157B (en) * 1964-12-17 1966-03-10 Robert Bosch Elektronik membrane
US3663768A (en) * 1971-01-15 1972-05-16 Northern Electric Co Electret transducer

Also Published As

Publication number Publication date
US3740496A (en) 1973-06-19

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