US3588552A - Prestressed piezoelectric audio transducer - Google Patents

Prestressed piezoelectric audio transducer Download PDF

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Publication number
US3588552A
US3588552A US860218A US3588552DA US3588552A US 3588552 A US3588552 A US 3588552A US 860218 A US860218 A US 860218A US 3588552D A US3588552D A US 3588552DA US 3588552 A US3588552 A US 3588552A
Authority
US
United States
Prior art keywords
disc
ring
electrodes
diaphragm
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.)
Expired - Lifetime
Application number
US860218A
Other languages
English (en)
Inventor
Hugo W Schafft
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.)
Motorola Solutions Inc
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Application granted granted Critical
Publication of US3588552A publication Critical patent/US3588552A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/05—Holders or supports
    • H03H9/09—Elastic or damping supports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
    • H04R31/003—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor for diaphragms or their outer suspension

Definitions

  • FIG. 6 is a partially cutaway side view of a device useful in explaining the operation of the diaphragm

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Manufacturing & Machinery (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
US860218A 1969-09-23 1969-09-23 Prestressed piezoelectric audio transducer Expired - Lifetime US3588552A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US86021869A 1969-09-23 1969-09-23

Publications (1)

Publication Number Publication Date
US3588552A true US3588552A (en) 1971-06-28

Family

ID=25332746

Family Applications (1)

Application Number Title Priority Date Filing Date
US860218A Expired - Lifetime US3588552A (en) 1969-09-23 1969-09-23 Prestressed piezoelectric audio transducer

Country Status (9)

Country Link
US (1) US3588552A (enrdf_load_stackoverflow)
JP (1) JPS4944658B1 (enrdf_load_stackoverflow)
DE (2) DE7035291U (enrdf_load_stackoverflow)
DK (1) DK130560B (enrdf_load_stackoverflow)
ES (1) ES383842A1 (enrdf_load_stackoverflow)
FR (1) FR2062964B3 (enrdf_load_stackoverflow)
GB (1) GB1284966A (enrdf_load_stackoverflow)
IL (1) IL35230A (enrdf_load_stackoverflow)
NL (1) NL7014052A (enrdf_load_stackoverflow)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3948089A (en) * 1973-10-12 1976-04-06 Westinghouse Electric Corporation Strain gauge apparatus
JPS51130216A (en) * 1975-05-07 1976-11-12 Matsushita Electric Ind Co Ltd Electromechanical transducer
JPS5254419A (en) * 1975-10-29 1977-05-02 Pioneer Electronic Corp Electroacoustic transducer
US4044350A (en) * 1974-08-22 1977-08-23 Oleg Tretiakoff Electromechanical transducer for relief display panel
EP0051832A1 (en) * 1980-11-07 1982-05-19 Hitachi, Ltd. Piezoelectric ceramic transducer
US4716331A (en) * 1985-12-30 1987-12-29 Motorola Inc. Electrically variable piezoelectric hybrid capacitor
US5589725A (en) * 1993-02-23 1996-12-31 Research Corporation Tech., Inc. Monolithic prestressed ceramic devices and method for making same
US6396196B1 (en) * 1992-12-26 2002-05-28 Ngk Insulators, Ltd. Piezoelectric device
US20020179873A1 (en) * 2001-01-31 2002-12-05 Schmauser Erik M. Piezoelectric actuator
US6734603B2 (en) * 1995-04-04 2004-05-11 The United States Of America As Represented By The National Aeronautics And Space Administration Thin layer composite unimorph ferroelectric driver and sensor
US20040173248A1 (en) * 2000-09-07 2004-09-09 Alps Electric Co., Ltd. Ultrasonic vibrator, wet-treatment nozzle, and wet-treatment apparatus
US20080092354A1 (en) * 2006-10-20 2008-04-24 The Boeing Company Piezoelectric bimorph beam manufacturing method
US9743190B2 (en) 2015-03-31 2017-08-22 Bose Corporation Acoustic diaphragm
US9769570B2 (en) 2015-03-31 2017-09-19 Bose Corporation Acoustic diaphragm

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1006969A (en) * 1973-07-26 1977-03-15 Lyle E. Shoot Piezoelectric transducer
GB2155731A (en) * 1983-11-01 1985-09-25 John David Gregson Ultrasonic transducers
JPS6367448U (enrdf_load_stackoverflow) * 1986-06-27 1988-05-06
DE102008011414A1 (de) * 2008-02-27 2009-09-10 Continental Automotive Gmbh Verfahren zum Polarisieren einer Piezokeramik
CN109935223B (zh) * 2017-12-19 2021-04-20 北京长城电子装备有限责任公司 一种超小尺寸低频发射换能器

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3948089A (en) * 1973-10-12 1976-04-06 Westinghouse Electric Corporation Strain gauge apparatus
US4044350A (en) * 1974-08-22 1977-08-23 Oleg Tretiakoff Electromechanical transducer for relief display panel
JPS51130216A (en) * 1975-05-07 1976-11-12 Matsushita Electric Ind Co Ltd Electromechanical transducer
JPS5254419A (en) * 1975-10-29 1977-05-02 Pioneer Electronic Corp Electroacoustic transducer
EP0051832A1 (en) * 1980-11-07 1982-05-19 Hitachi, Ltd. Piezoelectric ceramic transducer
US4471258A (en) * 1980-11-07 1984-09-11 Hitachi, Ltd. Piezoelectric ceramic transducer
US4716331A (en) * 1985-12-30 1987-12-29 Motorola Inc. Electrically variable piezoelectric hybrid capacitor
US6396196B1 (en) * 1992-12-26 2002-05-28 Ngk Insulators, Ltd. Piezoelectric device
US5589725A (en) * 1993-02-23 1996-12-31 Research Corporation Tech., Inc. Monolithic prestressed ceramic devices and method for making same
US6734603B2 (en) * 1995-04-04 2004-05-11 The United States Of America As Represented By The National Aeronautics And Space Administration Thin layer composite unimorph ferroelectric driver and sensor
US20040173248A1 (en) * 2000-09-07 2004-09-09 Alps Electric Co., Ltd. Ultrasonic vibrator, wet-treatment nozzle, and wet-treatment apparatus
US20020179873A1 (en) * 2001-01-31 2002-12-05 Schmauser Erik M. Piezoelectric actuator
US6799745B2 (en) * 2001-01-31 2004-10-05 Caterpillar Inc Piezoelectric actuator
US20080092354A1 (en) * 2006-10-20 2008-04-24 The Boeing Company Piezoelectric bimorph beam manufacturing method
US7681290B2 (en) * 2006-10-20 2010-03-23 The Boeing Company Piezoelectric bimorph beam manufacturing method
US9743190B2 (en) 2015-03-31 2017-08-22 Bose Corporation Acoustic diaphragm
US9769570B2 (en) 2015-03-31 2017-09-19 Bose Corporation Acoustic diaphragm

Also Published As

Publication number Publication date
GB1284966A (en) 1972-08-09
FR2062964A7 (enrdf_load_stackoverflow) 1971-07-02
DE7035291U (de) 1971-02-25
ES383842A1 (es) 1973-03-01
DK130560C (enrdf_load_stackoverflow) 1975-08-18
NL7014052A (enrdf_load_stackoverflow) 1971-03-25
FR2062964B3 (enrdf_load_stackoverflow) 1973-06-08
JPS4944658B1 (enrdf_load_stackoverflow) 1974-11-29
DE2046901B2 (de) 1972-02-17
IL35230A (en) 1974-03-14
DK130560B (da) 1975-03-03
DE2046901A1 (de) 1971-04-22
IL35230A0 (en) 1970-11-30

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