JPS57500494A - - Google Patents

Info

Publication number
JPS57500494A
JPS57500494A JP56501311A JP50131181A JPS57500494A JP S57500494 A JPS57500494 A JP S57500494A JP 56501311 A JP56501311 A JP 56501311A JP 50131181 A JP50131181 A JP 50131181A JP S57500494 A JPS57500494 A JP S57500494A
Authority
JP
Japan
Prior art keywords
layer
piezoelectric
covered
center
opening
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.)
Pending
Application number
JP56501311A
Other languages
English (en)
Japanese (ja)
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 JPS57500494A publication Critical patent/JPS57500494A/ja
Pending 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
    • H04R17/10—Resonant transducers, i.e. adapted to produce maximum output at a predetermined frequency

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
JP56501311A 1980-04-10 1981-04-10 Pending JPS57500494A (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3013788A DE3013788C2 (de) 1980-04-10 1980-04-10 Piezokeramikscheibe für einen Signalgeber zur Erzeugung eines akustischen Signals

Publications (1)

Publication Number Publication Date
JPS57500494A true JPS57500494A (enrdf_load_stackoverflow) 1982-03-18

Family

ID=6099671

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56501311A Pending JPS57500494A (enrdf_load_stackoverflow) 1980-04-10 1981-04-10

Country Status (5)

Country Link
EP (1) EP0038043B1 (enrdf_load_stackoverflow)
JP (1) JPS57500494A (enrdf_load_stackoverflow)
AT (1) ATE7096T1 (enrdf_load_stackoverflow)
DE (1) DE3013788C2 (enrdf_load_stackoverflow)
WO (1) WO1981002963A1 (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63314997A (ja) * 1987-06-18 1988-12-22 Matsushita Electric Ind Co Ltd 圧電発音体
JP2007028469A (ja) * 2005-07-21 2007-02-01 Nec Tokin Corp 音響振動発生素子、音響振動発生素子の製造方法及び音響振動発生装置

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3230060C2 (de) * 1981-07-31 1986-07-31 Sumitomo Electric Industries, Ltd., Osaka Piezoelektrischer Summer
US5881021A (en) * 1997-03-10 1999-03-09 Dreamco Enterprises Inc. Quick charge capacitor powered non-interruptible wearable personal security alarm
DE19902875C1 (de) * 1999-01-25 2000-07-20 Ideal Standard Piezoschallwandler und Badewanne mit einem Piezoschallwandler
JP4203899B2 (ja) * 2002-06-13 2009-01-07 オムロンヘルスケア株式会社 電子体温計

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2635199A (en) * 1948-01-08 1953-04-14 John M Wolfskill Piezoelectric crystal apparatus
BE623017A (enrdf_load_stackoverflow) * 1961-09-29
US3495105A (en) * 1967-07-19 1970-02-10 Ngk Spark Plug Co Three-terminal piezoelectric resonator
US3578921A (en) * 1970-01-26 1971-05-18 Sonotone Corp Miniature multiple-diaphragm acoustic mechanoelectric transducer device
CA930211A (en) * 1970-08-20 1973-07-17 Johnson Matthey And Mallory Limited Piezoelectric transducer and noise making device utilizing same
GB1429856A (en) * 1973-03-07 1976-03-31 Taga Electric Co Ltd Transducers
US4122365A (en) * 1976-01-26 1978-10-24 Projects Unlimited, Inc. Piezoelectric buzzer device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63314997A (ja) * 1987-06-18 1988-12-22 Matsushita Electric Ind Co Ltd 圧電発音体
JP2007028469A (ja) * 2005-07-21 2007-02-01 Nec Tokin Corp 音響振動発生素子、音響振動発生素子の製造方法及び音響振動発生装置

Also Published As

Publication number Publication date
EP0038043A1 (de) 1981-10-21
DE3013788A1 (de) 1981-10-15
WO1981002963A1 (en) 1981-10-15
ATE7096T1 (de) 1984-04-15
EP0038043B1 (de) 1984-04-11
DE3013788C2 (de) 1982-11-25

Similar Documents

Publication Publication Date Title
DE3069001D1 (en) Piezoelectric vibration transducer
DE3478141D1 (en) Piezoelectric resonator force transducer
GB8321053D0 (en) Piezoelectric pressure/temperature transducer
GB2104345B (en) An electroacoustic transducer of the piezoelectric polymer type
GB8501262D0 (en) Piezoelectric ultrasonic transducer
GB2140653B (en) A piezoelectric sound producer
AU515336B2 (en) Reducing the resonant frequency ofa piezoelectric transducer
FI810453A7 (fi) Muuttajalevy pietsosähköisiä muuttajia varten.
NO174270C (no) Piezoelektrisk transduser
GB2059594B (en) Piezoelectric transducer for producing a signal depending on the tensile force of a textile thread
GB2213023B (en) Two-dimensional piezoelectric transducer assembly
JPS57500494A (enrdf_load_stackoverflow)
AU7307887A (en) Piezoelectric transducer
GB9011337D0 (en) Piezo-electric transducer
GB8431194D0 (en) Piezoelectric transducer
GB2096860B (en) Piezoelectric sound transducer
JPS5535558A (en) Sounding material
JPS56144585A (en) Bimorph piezoelectric element
JPS5687824A (en) Piezoelectric transducer
JPS5766494A (en) Device for driving piezoelectric element sound producing unit for portable small size information device
JPS56156903A (en) Vibration isolating mechanism of record player
DE3568885D1 (en) Echographic transducer using an oscillating piezoelectric disc on which a deformable membrane forming a lens is mounted
SU688877A1 (ru) Составной пьезоэлектрический преобразователь
IL83648A0 (en) Piezoelectric ceramic acoustic transducer
GB2153627B (en) Piezoelectric electroacoustic transducer