GB1239658A - - Google Patents

Info

Publication number
GB1239658A
GB1239658A GB1239658DA GB1239658A GB 1239658 A GB1239658 A GB 1239658A GB 1239658D A GB1239658D A GB 1239658DA GB 1239658 A GB1239658 A GB 1239658A
Authority
GB
United Kingdom
Prior art keywords
plates
diaphragm
holes
coated
april
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
Other languages
English (en)
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 filed Critical
Publication of GB1239658A publication Critical patent/GB1239658A/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
    • H04R19/02—Loudspeakers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
GB1239658D 1969-04-17 1969-04-17 Expired GB1239658A (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1960769 1969-04-17

Publications (1)

Publication Number Publication Date
GB1239658A true GB1239658A (enrdf_load_stackoverflow) 1971-07-21

Family

ID=10132176

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1239658D Expired GB1239658A (enrdf_load_stackoverflow) 1969-04-17 1969-04-17

Country Status (4)

Country Link
BE (1) BE749037A (enrdf_load_stackoverflow)
FR (1) FR2039244B1 (enrdf_load_stackoverflow)
GB (1) GB1239658A (enrdf_load_stackoverflow)
IE (1) IE33785B1 (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4006317A (en) * 1975-02-14 1977-02-01 Freeman Miller L Electrostatic transducer and acoustic and electric signal integrator
US4289936A (en) * 1980-04-07 1981-09-15 Civitello John P Electrostatic transducers
US4429189A (en) 1981-11-20 1984-01-31 Bell Telephone Laboratories, Incorporated Electret transducer with a selectively metalized backplate
US4429190A (en) 1981-11-20 1984-01-31 Bell Telephone Laboratories, Incorporated Continuous strip electret transducer array
WO1984004865A1 (en) * 1983-05-23 1984-12-06 Harold Norman Beveridge Electrode for electrostatic transducer and methods of manufacture
WO2014176657A1 (en) * 2013-05-01 2014-11-06 Murray Ronald Harman Electrostatic loudspeaker, tools and methods for making same

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2423945A1 (fr) * 1978-03-31 1979-11-16 Guisto Marc Transducteur electrostatique perfectionne
NL193083C (nl) * 1994-06-08 1998-09-08 Cornelis Ruijtenberg Werkwijze voor het vervaardigen van een transducent van een elektrostatische luidspreker.

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3008013A (en) * 1954-07-20 1961-11-07 Ferranti Ltd Electrostatic loudspeakers
US2975243A (en) * 1958-01-17 1961-03-14 Philco Corp Transducers

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4006317A (en) * 1975-02-14 1977-02-01 Freeman Miller L Electrostatic transducer and acoustic and electric signal integrator
US4289936A (en) * 1980-04-07 1981-09-15 Civitello John P Electrostatic transducers
US4429189A (en) 1981-11-20 1984-01-31 Bell Telephone Laboratories, Incorporated Electret transducer with a selectively metalized backplate
US4429190A (en) 1981-11-20 1984-01-31 Bell Telephone Laboratories, Incorporated Continuous strip electret transducer array
WO1984004865A1 (en) * 1983-05-23 1984-12-06 Harold Norman Beveridge Electrode for electrostatic transducer and methods of manufacture
US4533794A (en) * 1983-05-23 1985-08-06 Beveridge Harold N Electrode for electrostatic transducer
EP0147432A4 (en) * 1983-05-23 1986-06-05 Harold Norman Beveridge ELECTRODE FOR ELECTROSTATIC TRANSDUCER AND METHODS OF PRODUCING THE SAME.
WO2014176657A1 (en) * 2013-05-01 2014-11-06 Murray Ronald Harman Electrostatic loudspeaker, tools and methods for making same

Also Published As

Publication number Publication date
FR2039244A1 (enrdf_load_stackoverflow) 1971-01-15
BE749037A (fr) 1970-10-01
IE33785L (en) 1970-10-17
IE33785B1 (en) 1974-10-30
FR2039244B1 (enrdf_load_stackoverflow) 1974-05-24

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee