FR1578513A - - Google Patents

Info

Publication number
FR1578513A
FR1578513A FR1578513DA FR1578513A FR 1578513 A FR1578513 A FR 1578513A FR 1578513D A FR1578513D A FR 1578513DA FR 1578513 A FR1578513 A FR 1578513A
Authority
FR
France
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
French (fr)
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
Application granted granted Critical
Publication of FR1578513A publication Critical patent/FR1578513A/fr
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
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
FR1578513D 1967-08-28 1968-08-22 Expired FR1578513A (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US66703567A 1967-08-28 1967-08-28

Publications (1)

Publication Number Publication Date
FR1578513A true FR1578513A (enrdf_load_stackoverflow) 1969-08-14

Family

ID=24676543

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1578513D Expired FR1578513A (enrdf_load_stackoverflow) 1967-08-28 1968-08-22

Country Status (3)

Country Link
US (1) US3588381A (enrdf_load_stackoverflow)
DE (2) DE1762509A1 (enrdf_load_stackoverflow)
FR (1) FR1578513A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2179883A1 (enrdf_load_stackoverflow) * 1972-04-10 1973-11-23 Motorola Inc
EP0146933A3 (en) * 1983-12-23 1986-10-01 Nippondenso Co., Ltd. Sound generating apparatus

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5911237B2 (ja) * 1979-08-16 1984-03-14 株式会社精工舎 圧電スピ−カ
DE3009048C2 (de) * 1980-03-08 1983-04-21 Kuttruff, Heinrich, Prof. Dr., 5100 Aachen Piezoelektrischer Mehrschichtwandler für Ultraschall
US4461930A (en) * 1982-09-23 1984-07-24 Pioneer Speaker Components, Inc. Acoustic transducer with honeycomb diaphragm
AU594852B2 (en) * 1986-11-07 1990-03-15 Gec Marconi Systems Pty Limited A composite sonar transducer for operation as a low frequency underwater acoustic source
WO1988003739A1 (en) * 1986-11-07 1988-05-19 Plessey Australia Pty. Limited A composite sonar transducer for operation as a low frequency underwater acoustic source
US4996713A (en) * 1989-09-25 1991-02-26 S. Eletro-Acustica S.A. Electroacoustic piezoelectric transducer having a broad operating range
CN107079225B (zh) * 2014-12-02 2019-12-10 索尼公司 扬声器装置
RU2649041C2 (ru) * 2016-09-21 2018-03-29 Владимир Борисович Комиссаренко Электроакустический пьезокерамический преобразователь
US11190881B2 (en) * 2019-06-04 2021-11-30 uBeam Inc. Piezoelectric transducer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2179883A1 (enrdf_load_stackoverflow) * 1972-04-10 1973-11-23 Motorola Inc
EP0146933A3 (en) * 1983-12-23 1986-10-01 Nippondenso Co., Ltd. Sound generating apparatus

Also Published As

Publication number Publication date
US3588381A (en) 1971-06-28
DE6609583U (de) 1972-07-13
DE1762509A1 (de) 1970-10-29

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Legal Events

Date Code Title Description
ST Notification of lapse