NL155162B - Piezo-elektrische microfoon. - Google Patents

Piezo-elektrische microfoon.

Info

Publication number: NL155162B
Authority: NL; Netherlands
Prior art keywords: piezo; electric microphone; microphone; electric
Prior art date: 1969-05-22

Application number

NL707007549A

Other languages

English (en)

Other versions

NL7007549A (nl

Original Assignee

Matsushita Electric Industrial Co Ltd

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.)

1969-05-22

Filing date

1970-05-25

Publication date

1977-11-15

1969-05-22 Priority claimed from JP4666569U external-priority patent/JPS496952Y1/ja

1969-05-26 Priority claimed from JP4911269U external-priority patent/JPS4736109Y1/ja

1969-06-27 Priority claimed from JP6236869U external-priority patent/JPS4741469Y1/ja

1969-06-27 Priority claimed from JP6237069U external-priority patent/JPS5215214Y1/ja

1969-10-09 Priority claimed from JP9664069U external-priority patent/JPS4938414Y1/ja

1970-05-25 Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd

1970-11-30 Publication of NL7007549A publication Critical patent/NL7007549A/xx

1977-11-15 Publication of NL155162B publication Critical patent/NL155162B/nl

Classifications

- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/50—Devices characterised by the use of electric or magnetic means for measuring linear speed
- G01P3/54—Devices characterised by the use of electric or magnetic means for measuring linear speed by measuring frequency of generated current or voltage
- 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)
General Physics & Mathematics (AREA)
Engineering & Computer Science (AREA)
Acoustics & Sound (AREA)
Signal Processing (AREA)
Transducers For Ultrasonic Waves (AREA)
Piezo-Electric Transducers For Audible Bands (AREA)

NL707007549A 1969-05-22 1970-05-25 Piezo-elektrische microfoon. NL155162B (nl)

Applications Claiming Priority (6)

Application Number	Priority Date	Filing Date
JP4666569U JPS496952Y1 (nl)	1969-05-22	1969-05-22
JP4911269U JPS4736109Y1 (nl)	1969-05-26	1969-05-26
JP4122469		1969-05-26
JP6236869U JPS4741469Y1 (nl)	1969-06-27	1969-06-27
JP6237069U JPS5215214Y1 (nl)	1969-06-27	1969-06-27
JP9664069U JPS4938414Y1 (nl)	1969-10-09	1969-10-09

Publications (2)

Publication Number	Publication Date
NL7007549A NL7007549A (nl)	1970-11-30
NL155162B true NL155162B (nl)	1977-11-15

Family

ID=27550025

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
NL707007549A NL155162B (nl)	1969-05-22	1970-05-25	Piezo-elektrische microfoon.

Country Status (4)

Country	Link
US (1)	US3749854A (nl)
FR (1)	FR2054558B1 (nl)
GB (1)	GB1316811A (nl)
NL (1)	NL155162B (nl)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4172253A (en) *	1972-04-19	1979-10-23	Hermans Albert L	Controlled wave pattern ultrasonic burglar alarm
US4006371A (en) *	1973-03-19	1977-02-01	Whitewater Electronics, Inc.	Electroacoustical transducer comprising piezoelectric element
JPS5642499A (en) *	1979-05-15	1981-04-20	Nippon Ceramic Kk	Ultrasonic-wave transducer
JPS5667731A (en)	1979-11-06	1981-06-08	Nissan Motor Co Ltd	Knocking sensor
JPS6025956B2 (ja) *	1980-12-10	1985-06-21	松下電器産業株式会社	超音波送受波器
JPS5851697A (ja) *	1981-09-22	1983-03-26	Matsushita Electric Ind Co Ltd	超音波送受波器
US4607186A (en) *	1981-11-17	1986-08-19	Matsushita Electric Industrial Co. Ltd.	Ultrasonic transducer with a piezoelectric element
FR2536622B1 (fr) *	1982-11-19	1986-03-07	Thomson Csf	Hydrophone de vitesse
US5185728A (en) *	1990-10-31	1993-02-09	Cyber Scientific	Omnidirectional ultrasonic transducer
US11444556B1 (en) *	2018-03-01	2022-09-13	John M. Leslie	Piezoelectric electric energy generating device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR1376306A (fr) *	1963-02-07	1964-10-23	Brown Ltd S G	Perfectionnements aux transducteurs électro-acoustiques
US3360664A (en) *	1964-10-30	1967-12-26	Gen Dynamics Corp	Electromechanical apparatus

1970
- 1970-05-22 GB GB2499970A patent/GB1316811A/en not_active Expired
- 1970-05-25 NL NL707007549A patent/NL155162B/nl not_active IP Right Cessation
- 1970-05-25 FR FR7018965A patent/FR2054558B1/fr not_active Expired
1972
- 1972-04-18 US US00245284A patent/US3749854A/en not_active Expired - Lifetime

Also Published As

Publication number	Publication date
FR2054558A1 (nl)	1971-04-23
FR2054558B1 (nl)	1975-09-26
GB1316811A (en)	1973-05-16
DE2025084A1 (de)	1971-01-14
NL7007549A (nl)	1970-11-30
DE2025084B2 (de)	1972-06-15
US3749854A (en)	1973-07-31

Publication	Publication Date	Title
NL169053C (nl)	1982-06-01	Akoestisch dempende constructie.
NO136958C (no)	1977-12-07	Hullskj{reinnretning.
DK135480C (da)	1977-10-17	Hovedmikrotelefon
DK126959B (da)	1973-09-03	Muffe.
BE797074A (nl)	1973-09-21	Luidsprekend telefoontoestel
DK130560B (da)	1975-03-03	Piezoelektrisk transor.
AT316669B (de)	1974-07-25	Mikrophon
NO136080C (no)	1977-07-20	St¦peanordning.
DK136274B (da)	1977-09-19	Universalled.
NL155162B (nl)	1977-11-15	Piezo-elektrische microfoon.
NL172504C (nl)	1983-09-01	Elektro-akoestische omzetter.
OA03688A (fr)	1971-12-24	Transducteur acoustique.
DK137867B (da)	1978-05-22	Stenbor.
DK125774B (da)	1973-05-07	Vibrationsmølle.
DK130805B (da)	1975-04-14	Magnetosriktiv transducer.
CH473515A (de)	1969-05-31	Mikrotelephon
DK125006B (da)	1972-12-18	Termokopieringsapparat.
NL149661B (nl)	1976-05-17	Luidsprekend telefoontoestel.
DK126216B (da)	1973-06-18	Læseapparat til mikrooptegnelser.
DK126547B (da)	1973-07-30	Nematodicid.
CH552309A (de)	1974-07-31	Sprechfunkgeraet.
ES151209Y (es)	1970-07-01	Dispositivo sonoro.
DK124185B (da)	1972-09-25	Termokopieringsmaskine.
CH497828A (de)	1970-10-15	Mikrophonanordnung
ES155554Y (es)	1970-11-01	Magnetofono con microfono incorporado.

Legal Events

Date	Code	Title	Description
1990-05-31	NL80	Information provided on patent owner name for an already discontinued patent	Owner name: MATSUSHITA EL
1990-07-16	V4	Discontinued because of reaching the maximum lifetime of a patent