EP0132039A3 - Couvercle résistant à l'humidité pour un transducteur électro-acoustique - Google Patents

Couvercle résistant à l'humidité pour un transducteur électro-acoustique Download PDF

Info

Publication number
EP0132039A3
EP0132039A3 EP84303836A EP84303836A EP0132039A3 EP 0132039 A3 EP0132039 A3 EP 0132039A3 EP 84303836 A EP84303836 A EP 84303836A EP 84303836 A EP84303836 A EP 84303836A EP 0132039 A3 EP0132039 A3 EP 0132039A3
Authority
EP
European Patent Office
Prior art keywords
moisture resistant
electroacoustic transducer
resistant cover
acoustic waves
transducer
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.)
Withdrawn
Application number
EP84303836A
Other languages
German (de)
English (en)
Other versions
EP0132039A2 (fr
Inventor
Robert Bacon Pepper
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0132039A2 publication Critical patent/EP0132039A2/fr
Publication of EP0132039A3 publication Critical patent/EP0132039A3/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/44—Special adaptations for subaqueous use, e.g. for hydrophone

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
EP84303836A 1983-06-09 1984-06-06 Couvercle résistant à l'humidité pour un transducteur électro-acoustique Withdrawn EP0132039A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US50277083A 1983-06-09 1983-06-09
US502770 1983-06-09

Publications (2)

Publication Number Publication Date
EP0132039A2 EP0132039A2 (fr) 1985-01-23
EP0132039A3 true EP0132039A3 (fr) 1986-07-23

Family

ID=23999340

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84303836A Withdrawn EP0132039A3 (fr) 1983-06-09 1984-06-06 Couvercle résistant à l'humidité pour un transducteur électro-acoustique

Country Status (1)

Country Link
EP (1) EP0132039A3 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4872148A (en) * 1984-03-08 1989-10-03 Polaroid Corporation Ultrasonic transducer for use in a corrosive/abrasive environment
FR2683969B1 (fr) * 1991-11-15 1997-06-20 Thomson Csf Membrane d'etancheite pour dispositif immerge, notamment pour dispositif acoustique sous-marin, et dispositif comprenant une telle membrane.
WO1995021512A1 (fr) * 1994-02-03 1995-08-10 Knowles Electronics, Inc. Microphone pouvant etre utilise sous l'eau

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3311703A (en) * 1963-05-21 1967-03-28 Carl E Grinstead Microphone with low frequency filter
US3944756A (en) * 1975-03-05 1976-03-16 Electro-Voice, Incorporated Electret microphone
US4081626A (en) * 1976-11-12 1978-03-28 Polaroid Corporation Electrostatic transducer having narrowed directional characteristic
GB2015299A (en) * 1978-02-20 1979-09-05 Hosiden Electronics Co Electret microphone
GB1559214A (en) * 1977-12-20 1980-01-16 Brown Communications Ltd Sg Protection of devices against immersion
GB2064263A (en) * 1979-11-30 1981-06-10 Pye Electronic Prod Ltd Microphone unit

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3311703A (en) * 1963-05-21 1967-03-28 Carl E Grinstead Microphone with low frequency filter
US3944756A (en) * 1975-03-05 1976-03-16 Electro-Voice, Incorporated Electret microphone
US4081626A (en) * 1976-11-12 1978-03-28 Polaroid Corporation Electrostatic transducer having narrowed directional characteristic
GB1559214A (en) * 1977-12-20 1980-01-16 Brown Communications Ltd Sg Protection of devices against immersion
GB2015299A (en) * 1978-02-20 1979-09-05 Hosiden Electronics Co Electret microphone
GB2064263A (en) * 1979-11-30 1981-06-10 Pye Electronic Prod Ltd Microphone unit

Also Published As

Publication number Publication date
EP0132039A2 (fr) 1985-01-23

Similar Documents

Publication Publication Date Title
EP0072288A3 (en) Electro-acoustic transducer with piezo-electric polymer
AU5379579A (en) Surface acoustic wave pressure sensor structure
DE3478357D1 (en) Ultrasonic transducers having improved acoustic impedance matching layers
ES8401704A1 (es) Un transductor electro-acustico.
MY103630A (en) Electro-acoustic transducer
AU8480882A (en) Sound deadening material
GB2168212B (en) Surface acoustic wave transducer
JPS5362519A (en) Electrostatic sound transducer
GB8317086D0 (en) Attenuation of sound waves
GB2157075B (en) Acoustic transducers utilizing zno thin film
DE3061810D1 (en) Surface acoustic wave pressure transducer
AU1968483A (en) Surface acoustic wave sensor
DE3067783D1 (en) Acoustic transducer
JPS5585122A (en) Surface sound wave signal processor
DE3377888D1 (en) Electro-acoustic transducer with diaphragm
DE3068075D1 (en) Surface acoustic wave transducer
EP0044732A3 (en) Acoustic surface wave transducer with improved inband frequency characteristics
EP0132039A3 (fr) Couvercle résistant à l'humidité pour un transducteur électro-acoustique
GB2096860B (en) Piezoelectric sound transducer
JPS56140175A (en) Production of carpet with improved sound proofness
GB2142091B (en) Attenuation of sound waves
AU3879078A (en) Acoustic surface wave transducer
AU524762B2 (en) Surface acoustic wave pressure sensor structure
GB2071961B (en) Electro-acoustic transducer
JPS5787700A (en) Transmitter and receiver

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19850722

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19870124