CA948304A - Acoustical transducers - Google Patents

Acoustical transducers

Info

Publication number
CA948304A
CA948304A CA089,446A CA89446A CA948304A CA 948304 A CA948304 A CA 948304A CA 89446 A CA89446 A CA 89446A CA 948304 A CA948304 A CA 948304A
Authority
CA
Canada
Prior art keywords
acoustical transducers
acoustical
transducers
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
CA089,446A
Other languages
English (en)
Other versions
CA89446S (en
Inventor
Richard F. Mitchell
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of CA948304A publication Critical patent/CA948304A/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
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R15/00—Magnetostrictive transducers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/42—Piezoelectric device making
CA089,446A 1969-07-29 1970-07-29 Acoustical transducers Expired CA948304A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3805269 1969-07-29

Publications (1)

Publication Number Publication Date
CA948304A true CA948304A (en) 1974-05-28

Family

ID=10400842

Family Applications (1)

Application Number Title Priority Date Filing Date
CA089,446A Expired CA948304A (en) 1969-07-29 1970-07-29 Acoustical transducers

Country Status (5)

Country Link
US (1) US3671784A (de)
CA (1) CA948304A (de)
DE (1) DE2038687A1 (de)
FR (1) FR2064799A5 (de)
GB (1) GB1314818A (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4195244A (en) * 1978-07-26 1980-03-25 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration CdS Solid state phase insensitive ultrasonic transducer
US4654546A (en) * 1984-11-20 1987-03-31 Kari Kirjavainen Electromechanical film and procedure for manufacturing same
US5300852A (en) * 1991-10-04 1994-04-05 Honda Giken Kogyo Kabushiki Kaisha Piezoelectric ceramic laminate device
JP3358851B2 (ja) * 1993-03-11 2002-12-24 本田技研工業株式会社 感湿性アクチュエータ
DE69421011T2 (de) * 1993-07-15 2000-06-08 Gen Electric Breitband Ultraschallwandler und ihr Fabrikationsverfahren
US7081693B2 (en) * 2002-03-07 2006-07-25 Microstrain, Inc. Energy harvesting for wireless sensor operation and data transmission
US20070042816A1 (en) * 2005-08-15 2007-02-22 Idt Communication Technology Limited Handheld communication device with key-lock

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3192420A (en) * 1961-01-26 1965-06-29 Automation Ind Inc Electro-mechanical transducers and the fabrication thereof
US3505657A (en) * 1965-07-20 1970-04-07 Us Navy Torsional delay line and impressed flux linkage interaction device
DE1541523B1 (de) * 1965-12-21 1970-07-09 Nippon Electric Co Piezoelektrisches elektroakustisches Wandlerelement und Verfahren zu seiner Herstellung
FR1482899A (fr) * 1966-03-17 1967-06-02 Csf Lignes acoustiques dispersives

Also Published As

Publication number Publication date
FR2064799A5 (de) 1971-07-23
GB1314818A (en) 1973-04-26
US3671784A (en) 1972-06-20
DE2038687A1 (de) 1971-02-04

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