BE798009A - PIEZOELECTRIC ACOUSTIC TRANSDUCER - Google Patents

PIEZOELECTRIC ACOUSTIC TRANSDUCER

Info

Publication number: BE798009A
Authority: BE; Belgium
Prior art keywords: acoustic transducer; piezoelectric acoustic; piezoelectric; transducer; acoustic
Prior art date: 1972-04-10

Application number

BE129846A

Other languages

French (fr)

Inventor

H W Schafft

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.)

1972-04-10

Filing date

1973-04-10

Publication date

1973-10-10

1973-04-10 Application filed by Motorola Inc filed Critical Motorola Inc

1973-10-10 Publication of BE798009A publication Critical patent/BE798009A/en

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)
Diaphragms For Electromechanical Transducers (AREA)

BE129846A 1972-04-10 1973-04-10 PIEZOELECTRIC ACOUSTIC TRANSDUCER BE798009A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US24250172A	1972-04-10	1972-04-10

Publications (1)

Publication Number	Publication Date
BE798009A true BE798009A (en)	1973-10-10

Family

ID=22915023

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BE129846A BE798009A (en)	1972-04-10	1973-04-10	PIEZOELECTRIC ACOUSTIC TRANSDUCER

Country Status (11)

Country	Link
US (1)	US3786202A (en)
JP (1)	JPS5338924B2 (en)
AU (1)	AU5415873A (en)
BE (1)	BE798009A (en)
CA (1)	CA991304A (en)
DE (2)	DE7313564U (en)
FR (1)	FR2179883B1 (en)
GB (1)	GB1399766A (en)
HK (1)	HK74978A (en)
IT (1)	IT982996B (en)
NL (1)	NL173699C (en)

Families Citing this family (44)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4035672A (en) *	1975-02-06	1977-07-12	Cts Corporation	Acoustic transducer with a dual purpose piezoelectric element
JPS5437135U (en) *	1977-08-18	1979-03-10
JPS5825677Y2 (en) *	1978-04-07	1983-06-02	松下電器産業株式会社	piezoelectric speaker
GB2018548B (en) *	1978-04-07	1982-06-16	Matsushita Electric Ind Co Ltd	Piezoelectric speaker
DE2831362A1 (en) *	1978-07-17	1980-01-31	Siemens Ag	ELECTROACOUSTIC CONVERTER
DE2831377A1 (en) *	1978-07-17	1980-01-31	Siemens Ag	ELECTROACOUSTIC CONVERTER
JPS5911237B2 (en) *	1979-08-16	1984-03-14	株式会社精工舎	piezoelectric speaker
DE3005708C2 (en) *	1980-02-15	1984-08-30	Siemens AG, 1000 Berlin und 8000 München	Transducer plate for piezoelectric transducers
WO1982000543A1 (en) *	1980-08-11	1982-02-18	Inc Motorola	Apparatus and method for enhancing the frequency response of a loudspeaker
JPS6025956B2 (en) *	1980-12-10	1985-06-21	松下電器産業株式会社	Ultrasonic transducer
JPS5851697A (en) *	1981-09-22	1983-03-26	Matsushita Electric Ind Co Ltd	Ultrasonic wave transceiver
US4607186A (en) *	1981-11-17	1986-08-19	Matsushita Electric Industrial Co. Ltd.	Ultrasonic transducer with a piezoelectric element
US4458170A (en) *	1981-12-08	1984-07-03	Matsushita Electric Industrial Co., Ltd.	Ultrasonic transmitter-receiver
US4418248A (en) *	1981-12-11	1983-11-29	Koss Corporation	Dual element headphone
US4414436A (en) *	1982-04-19	1983-11-08	Pioneer Speaker Components, Inc.	Narrow-frequency band acoustic transducer
US4461930A (en) *	1982-09-23	1984-07-24	Pioneer Speaker Components, Inc.	Acoustic transducer with honeycomb diaphragm
JPS59130126U (en) *	1983-02-18	1984-09-01	小糸工業株式会社	data collection storage device
DE3306801A1 (en) *	1983-02-26	1984-09-06	Rainer J. 5000 Köln Haas	Spherical high-frequency loudspeaker with piezoelectric drive
FR2574610A1 (en) *	1984-09-05	1986-06-13	Sawafuji Dynameca Co Ltd	Piezoelectric loudspeaker - with two weights joined by viscoelastic layers and connecting rod
GB2166022A (en) *	1984-09-05	1986-04-23	Sawafuji Dynameca Co Ltd	Piezoelectric vibrator
FR2574609A1 (en) *	1984-09-05	1986-06-13	Sawafuji Dynameca Co Ltd	Piezoelectric element for radio loudspeaker - includes piezoelectric plate with main and auxiliary weights attached to visco-elastic layers on opposed faces
US5193119A (en) *	1985-09-02	1993-03-09	Franco Tontini	Multiple loudspeaker
JPH0749914Y2 (en) *	1986-01-29	1995-11-13	株式会社村田製作所	Ultrasonic transducer
DE4120681A1 (en) *	1990-08-04	1992-02-06	Bosch Gmbh Robert	ULTRASONIC CONVERTER
US5652801A (en) *	1994-05-02	1997-07-29	Aura Systems, Inc.	Resonance damper for piezoelectric transducer
US5828768A (en) *	1994-05-11	1998-10-27	Noise Cancellation Technologies, Inc.	Multimedia personal computer with active noise reduction and piezo speakers
US5638456A (en) *	1994-07-06	1997-06-10	Noise Cancellation Technologies, Inc.	Piezo speaker and installation method for laptop personal computer and other multimedia applications
US5444324A (en) *	1994-07-25	1995-08-22	Western Atlas International, Inc.	Mechanically amplified piezoelectric acoustic transducer
FR2734685B1 (en) *	1995-05-23	1997-08-14	Silec Liaisons Elec	PIEZOELECTRIC SPEAKER
US5901231A (en)	1995-09-25	1999-05-04	Noise Cancellation Technologies, Inc.	Piezo speaker for improved passenger cabin audio systems
JPH10294995A (en) *	1997-04-21	1998-11-04	Matsushita Electric Ind Co Ltd	Dripproof ultrasonic wave transmitter
US6181797B1 (en)	1999-01-09	2001-01-30	Noise Cancellation Technologies, Inc.	Piezo speaker for improved passenger cabin audio systems
GB2404779B (en) *	2003-08-07	2005-08-03	Sonic Age Ltd	Electro-acoustic device for creating patterns of particulate matter
US8354773B2 (en) *	2003-08-22	2013-01-15	Siemens Medical Solutions Usa, Inc.	Composite acoustic absorber for ultrasound transducer backing material
JP4696487B2 (en) *	2004-07-15	2011-06-08	リコープリンティングシステムズ株式会社	RECORDING HEAD AND INKJET RECORDING DEVICE HAVING THE SAME
US7415121B2 (en) *	2004-10-29	2008-08-19	Sonion Nederland B.V.	Microphone with internal damping
EP2312740B1 (en) *	2008-07-14	2014-06-04	Murata Manufacturing Co. Ltd.	Piezoelectric power generation device
KR101201064B1 (en) *	2008-12-04	2012-11-14	가부시키가이샤 무라타 세이사쿠쇼	Ultrasonic wave transmitter/receiver
KR20120068613A (en) *	2010-12-17	2012-06-27	삼성전기주식회사	Piezoelectric actuator
JP5960828B2 (en) *	2012-08-10	2016-08-02	京セラ株式会社	SOUND GENERATOR, SOUND GENERATOR, AND ELECTRONIC DEVICE
US9880671B2 (en) *	2013-10-08	2018-01-30	Sentons Inc.	Damping vibrational wave reflections
WO2016118874A1 (en) *	2015-01-23	2016-07-28	Knowles Electronics, Llc	Piezoelectric speaker driver
KR101756673B1 (en) *	2016-06-07	2017-07-25	주식회사 이엠텍	Microspeaker enclosure with porous material in resonance space
KR101788111B1 (en) *	2016-06-09	2017-10-20	주식회사 이엠텍	Microspeaker enclosure with porous material in resonance space

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2518331A (en) *	1948-05-06	1950-08-08	Bell Telephone Labor Inc	Piezoelectric crystal mounting
FR1376306A (en) *	1963-02-07	1964-10-23	Brown Ltd S G	Improvements to electro-acoustic transducers
GB1159337A (en) *	1966-06-13	1969-07-23	Motorola Inc	Piezoelectric Transducers
US3588381A (en) *	1967-08-28	1971-06-28	Motorola Inc	Transducer having spaced apart oppositely flexing piezoelectric members
NL6813996A (en) *	1968-09-30	1970-04-01
US3698993A (en) *	1971-03-29	1972-10-17	Sonix Inc	Sound deadening sheet material

1972
- 1972-04-10 US US00242501A patent/US3786202A/en not_active Expired - Lifetime
1973
- 1973-03-14 CA CA166,055A patent/CA991304A/en not_active Expired
- 1973-03-16 GB GB1283473A patent/GB1399766A/en not_active Expired
- 1973-04-05 AU AU54158/73A patent/AU5415873A/en not_active Expired
- 1973-04-06 IT IT49299/73A patent/IT982996B/en active
- 1973-04-10 FR FR7312775A patent/FR2179883B1/fr not_active Expired
- 1973-04-10 BE BE129846A patent/BE798009A/en not_active IP Right Cessation
- 1973-04-10 NL NLAANVRAGE7305005,A patent/NL173699C/en not_active IP Right Cessation
- 1973-04-10 DE DE19737313564U patent/DE7313564U/en not_active Expired
- 1973-04-10 DE DE2318027A patent/DE2318027C3/en not_active Expired
- 1973-04-10 JP JP4007673A patent/JPS5338924B2/ja not_active Expired
1978
- 1978-12-20 HK HK749/78A patent/HK74978A/en unknown

Also Published As

Publication number	Publication date
DE2318027A1 (en)	1973-11-08
IT982996B (en)	1974-10-21
US3786202A (en)	1974-01-15
CA991304A (en)	1976-06-15
DE2318027C3 (en)	1975-10-30
DE2318027B2 (en)	1975-03-20
JPS5338924B2 (en)	1978-10-18
NL7305005A (en)	1973-10-12
AU5415873A (en)	1974-10-10
DE7313564U (en)	1973-11-22
GB1399766A (en)	1975-07-02
JPS4910719A (en)	1974-01-30
FR2179883A1 (en)	1973-11-23
NL173699C (en)	1984-02-16
FR2179883B1 (en)	1979-09-28
HK74978A (en)	1978-12-29

Publication	Publication Date	Title
BE798009A (en)	1973-10-10	PIEZOELECTRIC ACOUSTIC TRANSDUCER
AT349796B (en)	1979-04-25	PIEZOELECTRIC PRESSURE TRANSDUCER
BR7405068A (en)	1976-02-17	ACOUSTIC TRANSDUCER
IT972509B (en)	1974-05-31	ENHANCED HOUSING FOR ELECTRO ACOUSTIC TRANSDUCERS
IT1002250B (en)	1976-05-20	UNDERWATER ELECTROACOUSTIC TRANSDUCER
IT986369B (en)	1975-01-30	ELECTROACOUSTIC TRANSDUCER
IT992831B (en)	1975-09-30	ELECTROSTATIC TRANSDUCER
IT989118B (en)	1975-05-20	ELECTROACOUSTIC TRANSDUCER
IT976236B (en)	1974-08-20	MAGNETOELASTIC TRANSDUCER
CH515499A (en)	1971-11-15	Piezoelectric pressure transducer
IT989204B (en)	1975-05-20	ELECTROACOUSTIC TRANSDUCER
FR2293844A1 (en)	1976-07-02	ACOUSTIC TRANSDUCER
AT324487B (en)	1975-09-10	PIEZOELECTRIC VIBRATION DRIVE
BR7301100D0 (en)	1973-10-11	DAMAGED VIBRATION TRANSDUCER HEAD ASSEMBLY
FR2278217A1 (en)	1976-02-06	ACOUSTIC TRANSDUCER
OA03688A (en)	1971-12-24	Acoustic transducer.
IT979752B (en)	1974-09-30	PIEZOELECTRIC TRANSDUCER
FR2327677A1 (en)	1977-05-06	TORSION TRANSDUCER
AT341804B (en)	1978-02-27	LOW PRESSURE TRANSDUCER
CH540722A (en)	1973-08-31	Piezoelectric transducer
BR7301463D0 (en)	1974-05-16	ELECTRIC ACOUSTIC TRANSDUCER
IT999333B (en)	1976-02-20	TRANSDUCERS
SU459264A1 (en)	1975-02-05	Ultrasonic transducer
BG20416A3 (en)	1975-11-05	ELECTROACOUSTIC TRANSDUCER
DK146000C (en)	1983-10-10	ELECTROACUSTIC TRANSDUCER

Legal Events

Date	Code	Title	Description
1990-10-31	RE	Patent lapsed	Owner name: MOTOROLA INC. Effective date: 19900430

Date

Code

Title

Description

1990-10-31

Patent lapsed

Owner name: MOTOROLA INC.

Effective date: 19900430