CA989973A - Acoustic transducer using a piezoelectric polyvinylidene fluoride resin film as the oscillator - Google Patents

Acoustic transducer using a piezoelectric polyvinylidene fluoride resin film as the oscillator

Info

Publication number
CA989973A
CA989973A CA129,103A CA129103A CA989973A CA 989973 A CA989973 A CA 989973A CA 129103 A CA129103 A CA 129103A CA 989973 A CA989973 A CA 989973A
Authority
CA
Canada
Prior art keywords
oscillator
resin film
polyvinylidene fluoride
acoustic transducer
fluoride resin
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
CA129,103A
Other languages
English (en)
Other versions
CA129103S (en
Inventor
Naohiro Murayama
Takao Oikawa
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.)
Kureha Corp
Original Assignee
Kureha Corp
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 Kureha Corp filed Critical Kureha Corp
Application granted granted Critical
Publication of CA989973A publication Critical patent/CA989973A/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
    • H04R17/005—Piezoelectric transducers; Electrostrictive transducers using a piezoelectric polymer
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G7/00—Capacitors in which the capacitance is varied by non-mechanical means; Processes of their manufacture
    • H01G7/02—Electrets, i.e. having a permanently-polarised dielectric
    • H01G7/021—Electrets, i.e. having a permanently-polarised dielectric having an organic dielectric
    • H01G7/023—Electrets, i.e. having a permanently-polarised dielectric having an organic dielectric of macromolecular compounds
    • 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
    • H04R19/01—Electrostatic transducers characterised by the use of electrets
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/80—Constructional details
    • H10N30/85—Piezoelectric or electrostrictive active materials
    • H10N30/857—Macromolecular compositions
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S310/00—Electrical generator or motor structure
    • Y10S310/80—Piezoelectric polymers, e.g. PVDF

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Power Engineering (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
CA129,103A 1970-12-04 1971-12-02 Acoustic transducer using a piezoelectric polyvinylidene fluoride resin film as the oscillator Expired CA989973A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP45106710A JPS4926890B1 (ja) 1970-12-04 1970-12-04

Publications (1)

Publication Number Publication Date
CA989973A true CA989973A (en) 1976-05-25

Family

ID=14440515

Family Applications (1)

Application Number Title Priority Date Filing Date
CA129,103A Expired CA989973A (en) 1970-12-04 1971-12-02 Acoustic transducer using a piezoelectric polyvinylidene fluoride resin film as the oscillator

Country Status (7)

Country Link
US (1) US3792204A (ja)
JP (1) JPS4926890B1 (ja)
CA (1) CA989973A (ja)
DE (1) DE2160176C3 (ja)
FR (1) FR2116563B1 (ja)
GB (1) GB1350226A (ja)
NL (1) NL172816C (ja)

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FR2521382A2 (fr) * 1982-02-09 1983-08-12 Lectret Sa Transducteur acoustique
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FR2542552B1 (fr) * 1983-03-07 1986-04-11 Thomson Csf Transducteur electroacoustique a diaphragme piezo-electrique
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GB8325861D0 (en) * 1983-09-28 1983-11-02 Syrinx Presicion Instr Ltd Force transducer
FR2563959B1 (fr) * 1984-05-04 1990-08-10 Lewiner Jacques Perfectionnements aux transducteurs electro-acoustiques a electret
DE3673121D1 (de) * 1985-10-25 1990-09-13 Fuji Electric Co Ltd Wandler vom schwingungstyp.
US4638207A (en) * 1986-03-19 1987-01-20 Pennwalt Corporation Piezoelectric polymeric film balloon speaker
US4830795A (en) * 1986-07-03 1989-05-16 Rutgers, The State University Of New Jersey Process for making polarized material
US4811594A (en) * 1988-04-25 1989-03-14 Battelle Memorial Institute Topography sensor
IL86705A0 (en) * 1988-06-10 1988-11-30 Sotek Ind Engineering Ltd Fluid flow metering apparatus
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US5115472A (en) * 1988-10-07 1992-05-19 Park Kyung T Electroacoustic novelties
US5185549A (en) * 1988-12-21 1993-02-09 Steven L. Sullivan Dipole horn piezoelectric electro-acoustic transducer design
US4937555A (en) * 1989-04-04 1990-06-26 The United States Of America As Represented By The Secretary Of Agriculture Piezoelectric apparatus and process for detection of insect infestation in an agricultural commodity
US5005416A (en) * 1989-04-04 1991-04-09 The United States Of America As Represented By The Secretary Of Agriculture Insect detection using a pitfall probe trap having vibration detection
NZ243294A (en) * 1991-06-25 1995-04-27 Commw Scient Ind Res Org Time of flight of acoustic wave packets through fluid: reduction of higher order acoustic mode effects
GB2269674B (en) * 1992-08-13 1995-10-11 Lawrence Alexander Campbell Electrochemical membrane sensor
US5347862A (en) * 1992-11-23 1994-09-20 Dov Ingman Fluid flow meter
US5495137A (en) * 1993-09-14 1996-02-27 The Whitaker Corporation Proximity sensor utilizing polymer piezoelectric film with protective metal layer
US5558298A (en) * 1994-12-05 1996-09-24 General Electric Company Active noise control of aircraft engine discrete tonal noise
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US5973441A (en) * 1996-05-15 1999-10-26 American Research Corporation Of Virginia Piezoceramic vibrotactile transducer based on pre-compressed arch
US20030036746A1 (en) 2001-08-16 2003-02-20 Avi Penner Devices for intrabody delivery of molecules and systems and methods utilizing same
US6140740A (en) * 1997-12-30 2000-10-31 Remon Medical Technologies, Ltd. Piezoelectric transducer
US6239535B1 (en) * 1998-03-31 2001-05-29 Measurement Specialties Inc. Omni-directional ultrasonic transducer apparatus having controlled frequency response
US6400065B1 (en) * 1998-03-31 2002-06-04 Measurement Specialties, Inc. Omni-directional ultrasonic transducer apparatus and staking method
ATE425738T1 (de) * 1999-11-17 2009-04-15 Boston Scient Ltd Miniaturisierte vorrichtungen zur abgabe von molekulen in einer tragerflussigkeit
US6411014B1 (en) * 2000-05-09 2002-06-25 Measurement Specialties, Inc. Cylindrical transducer apparatus
US6760455B2 (en) * 2000-07-13 2004-07-06 American Technology Corporation Electrostatic loudspeaker with a distributed filter
NO314555B1 (no) * 2002-04-08 2003-04-07 Meditron Asa Piezoelektrisk vibrasjonssensor
US7157640B2 (en) * 2003-06-17 2007-01-02 Baggs Lloyd R Undersaddle pickup for stringed musical instrument
JP5121011B2 (ja) * 2004-11-24 2013-01-16 レモン メディカル テクノロジーズ リミテッド 音響トランスデューサを組み込んだインプラント可能な医療機器
US7522962B1 (en) 2004-12-03 2009-04-21 Remon Medical Technologies, Ltd Implantable medical device with integrated acoustic transducer
US7570998B2 (en) * 2005-08-26 2009-08-04 Cardiac Pacemakers, Inc. Acoustic communication transducer in implantable medical device header
US7615012B2 (en) * 2005-08-26 2009-11-10 Cardiac Pacemakers, Inc. Broadband acoustic sensor for an implantable medical device
US7995777B2 (en) * 2005-10-03 2011-08-09 Xun Yu Thin film transparent acoustic transducer
US7912548B2 (en) 2006-07-21 2011-03-22 Cardiac Pacemakers, Inc. Resonant structures for implantable devices
WO2008011577A2 (en) * 2006-07-21 2008-01-24 Cardiac Pacemakers, Inc. Ultrasonic transducer for a metallic cavity implanted medical device
US8825161B1 (en) 2007-05-17 2014-09-02 Cardiac Pacemakers, Inc. Acoustic transducer for an implantable medical device
AU2008266678B2 (en) 2007-06-14 2013-06-20 Cardiac Pacemakers, Inc. Multi-element acoustic recharging system
GB2451438B (en) * 2007-07-27 2011-06-08 Secretary Trade Ind Brit Cavitation detection
US8379888B2 (en) * 2008-01-18 2013-02-19 National Taiwan University Flexible piezoelectric sound-generating devices
CN103535053B (zh) * 2011-05-17 2017-03-29 株式会社村田制作所 平面型扬声器以及av设备
US9513147B2 (en) * 2013-11-04 2016-12-06 South Jersey Engineering & Research, LLC Flowmeter comprising piezoelectric sensor
ES2553155B1 (es) * 2014-06-04 2016-10-14 Francisco TOSCANO GARCÍA Dispositivo de pulsos ultrasónicos para la eliminación de algas y moluscos de cascos de embarcaciones
US9551180B2 (en) 2014-06-04 2017-01-24 Milgard Manufacturing Incorporated System for controlling noise in a window assembly
CN106537301B (zh) * 2014-06-09 2019-09-10 株式会社村田制作所 振动装置以及触觉提示装置
WO2016067831A1 (ja) * 2014-10-27 2016-05-06 株式会社村田製作所 振動装置
KR20160068059A (ko) 2014-12-04 2016-06-15 삼성디스플레이 주식회사 다공성 압전 박막을 포함하는 압전 소자
WO2017187710A1 (ja) * 2016-04-28 2017-11-02 太陽誘電株式会社 振動波形センサ及び脈波検出装置
US11348563B2 (en) 2019-03-20 2022-05-31 Lloyd Baggs Innovations, Llc Pickup saddles for stringed instruments utilizing interference fit

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US3278695A (en) * 1963-03-21 1966-10-11 Astatic Corp Construction of earphones and microphones
US3612778A (en) * 1967-05-15 1971-10-12 Thermo Electron Corp Electret acoustic transducer and method of making
DE1902849C3 (de) * 1968-01-25 1978-06-29 Pioneer Electronic Corp., Tokio Mechanisch-elektrisch bzw. elektrisch-mechanischer Wandler
CA923294A (en) * 1968-12-09 1973-03-27 Tamura Masahiko High molecular weight electrets and process for producing them

Also Published As

Publication number Publication date
DE2160176B2 (de) 1977-12-08
DE2160176C3 (de) 1978-08-10
US3792204A (en) 1974-02-12
FR2116563A1 (ja) 1972-07-13
NL7116641A (ja) 1972-06-06
NL172816B (nl) 1983-05-16
NL172816C (nl) 1983-10-17
FR2116563B1 (ja) 1978-01-13
DE2160176A1 (de) 1972-08-17
GB1350226A (en) 1974-04-18
JPS4926890B1 (ja) 1974-07-12

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