GB1398171A - Diaphragm assemblies for electret transducers - Google Patents

Diaphragm assemblies for electret transducers

Info

Publication number
GB1398171A
GB1398171A GB4755972A GB4755972A GB1398171A GB 1398171 A GB1398171 A GB 1398171A GB 4755972 A GB4755972 A GB 4755972A GB 4755972 A GB4755972 A GB 4755972A GB 1398171 A GB1398171 A GB 1398171A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
support plate
film
surround
electret
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
GB4755972A
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.)
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
Publication of GB1398171A publication Critical patent/GB1398171A/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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2207/00—Details of diaphragms or cones for electromechanical transducers or their suspension covered by H04R7/00 but not provided for in H04R7/00 or in H04R2307/00
    • H04R2207/021—Diaphragm extensions, not necessarily integrally formed, e.g. skirts, rims, flanges

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
GB4755972A 1971-11-08 1972-10-16 Diaphragm assemblies for electret transducers Expired GB1398171A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US19667771A 1971-11-08 1971-11-08
US19659271A 1971-11-08 1971-11-08

Publications (1)

Publication Number Publication Date
GB1398171A true GB1398171A (en) 1975-06-18

Family

ID=26892043

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4755972A Expired GB1398171A (en) 1971-11-08 1972-10-16 Diaphragm assemblies for electret transducers

Country Status (7)

Country Link
JP (1) JPS5148067B2 (fr)
CH (1) CH556628A (fr)
DK (1) DK140578B (fr)
FR (1) FR2159372B1 (fr)
GB (1) GB1398171A (fr)
NL (1) NL166835C (fr)
SE (1) SE378500B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4458161A (en) * 1981-05-14 1984-07-03 Tokyo Shibaura Denki Kabushiki Kaisha Electret device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4458161A (en) * 1981-05-14 1984-07-03 Tokyo Shibaura Denki Kabushiki Kaisha Electret device

Also Published As

Publication number Publication date
DE2254692A1 (de) 1973-05-10
NL166835C (nl) 1981-09-15
CH556628A (de) 1974-11-29
DE2254692B2 (de) 1976-08-05
FR2159372A1 (fr) 1973-06-22
NL166835B (nl) 1981-04-15
JPS5148067B2 (fr) 1976-12-18
DK140578C (fr) 1980-02-18
JPS4859824A (fr) 1973-08-22
SE378500B (fr) 1975-09-01
NL7214357A (fr) 1973-05-10
FR2159372B1 (fr) 1977-08-26
DK140578B (da) 1979-10-01

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee