FI802943A - Piezoelektrisk omvandlare - Google Patents

Piezoelektrisk omvandlare

Info

Publication number: FI802943A
Authority: FI; Finland
Prior art keywords: piezoelektrisk; omvandlare; piezoelektrisk omvandlare
Prior art date: 1979-09-19

Application number

FI802943A

Other languages

English (en)

Other versions

FI74183C (fi

FI74183B (fi

Inventor

Klaus Baier

Erwin Martin

Original Assignee

Siemens Ag

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.)

1979-09-19

Filing date

1980-09-18

Publication date

1981-03-20

1980-09-18 Application filed by Siemens Ag filed Critical Siemens Ag

1981-03-20 Publication of FI802943A publication Critical patent/FI802943A/fi

1987-08-31 Application granted granted Critical

1987-08-31 Publication of FI74183B publication Critical patent/FI74183B/fi

1987-12-10 Publication of FI74183C publication Critical patent/FI74183C/fi

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
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/225—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only for telephonic receivers
- 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
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
- H04R2499/10—General applications
- H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's

Landscapes

Physics & Mathematics (AREA)
Engineering & Computer Science (AREA)
Acoustics & Sound (AREA)
Signal Processing (AREA)
Health & Medical Sciences (AREA)
Otolaryngology (AREA)
Piezo-Electric Transducers For Audible Bands (AREA)
Apparatuses For Generation Of Mechanical Vibrations (AREA)

FI802943A 1979-09-19 1980-09-18 Piezoelektrisk omvandlare. FI74183C (fi)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE2937922		1979-09-19
DE19792937922 DE2937922A1 (de)	1979-09-19	1979-09-19	Piezoelektrischer wandler

Publications (3)

Publication Number	Publication Date
FI802943A true FI802943A (fi)	1981-03-20
FI74183B FI74183B (fi)	1987-08-31
FI74183C FI74183C (fi)	1987-12-10

Family

ID=6081296

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FI802943A FI74183C (fi)	1979-09-19	1980-09-18	Piezoelektrisk omvandlare.

Country Status (10)

Country	Link
EP (1)	EP0025955B1 (fi)
JP (1)	JPS5651200A (fi)
AR (1)	AR223549A1 (fi)
AT (1)	ATE11478T1 (fi)
AU (1)	AU538420B2 (fi)
BR (1)	BR8005981A (fi)
DE (1)	DE2937922A1 (fi)
FI (1)	FI74183C (fi)
GR (1)	GR70029B (fi)
ZA (1)	ZA805775B (fi)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE3131349C2 (de) *	1981-08-07	1983-05-11	Rosenthal Technik Ag, 8672 Selb	Piezoelektrischer Dreitongeber
US4413198A (en) *	1981-12-30	1983-11-01	Motorola, Inc.	Piezoelectric transducer apparatus
DE3446183A1 (de) *	1984-12-18	1986-06-26	Siemens AG, 1000 Berlin und 8000 München	Piezoelektrischer wandler
JPS6295399U (fi) *	1985-12-03	1987-06-18
AU588989B2 (en) *	1986-04-10	1989-09-28	Alcatel Australia Limited	An improved transducer
DE4311701C2 (de) *	1993-04-08	1999-08-26	Siemens Ag	Anordnung zur Erzeugung von akustischen Signalen, insbesondere Tonrufen in Telekommunikationsgeräten

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB202938A (en) *	1922-02-06	1923-08-07	Signal Gmbh	Improvements in acoustic apparatus
DE2119911B2 (de) *	1971-04-23	1973-11-15	Siemens Ag, 1000 Berlin U. 8000 Muenchen	Elektroakustischer Wandler, insbe sondere Mikrofon fur Fernsprechanlagen
BE759888A (fr) *	1969-12-05	1971-06-04	Siemens Ag	Transducteur electro-acoustique, notamment microphone pour installations telephoniques
GB1370164A (en) *	1972-01-30	1974-10-16	Mullard Ltd	Piezoelectric transducer
DE2223531B1 (de) *	1972-05-15	1973-11-08	Siemens Ag	Elektroakustischer wandler
US4006371A (en) *	1973-03-19	1977-02-01	Whitewater Electronics, Inc.	Electroacoustical transducer comprising piezoelectric element
US4056741A (en) *	1973-04-18	1977-11-01	Airco, Inc.	Audible signal generating apparatus having selectively controlled audible output
US3922672A (en) *	1974-03-04	1975-11-25	Mallory & Co Inc P R	Audible alarm device
JPS5330296A (en) *	1976-09-01	1978-03-22	Seiko Instr & Electronics Ltd	Electro-acoustic transducer

1979
- 1979-09-19 DE DE19792937922 patent/DE2937922A1/de active Granted
1980
- 1980-09-11 AR AR282490A patent/AR223549A1/es active
- 1980-09-12 EP EP80105477A patent/EP0025955B1/de not_active Expired
- 1980-09-12 AT AT80105477T patent/ATE11478T1/de not_active IP Right Cessation
- 1980-09-17 GR GR62906A patent/GR70029B/el unknown
- 1980-09-17 JP JP12806380A patent/JPS5651200A/ja active Pending
- 1980-09-18 AU AU62509/80A patent/AU538420B2/en not_active Ceased
- 1980-09-18 BR BR8005981A patent/BR8005981A/pt unknown
- 1980-09-18 FI FI802943A patent/FI74183C/fi not_active IP Right Cessation
- 1980-09-18 ZA ZA00805775A patent/ZA805775B/xx unknown

Also Published As

Publication number	Publication date
AU6250980A (en)	1981-04-09
FI74183C (fi)	1987-12-10
GR70029B (fi)	1982-07-23
ATE11478T1 (de)	1985-02-15
DE2937922A1 (de)	1981-04-09
FI74183B (fi)	1987-08-31
AR223549A1 (es)	1981-08-31
DE2937922C2 (fi)	1988-11-24
AU538420B2 (en)	1984-08-16
JPS5651200A (en)	1981-05-08
EP0025955A1 (de)	1981-04-01
BR8005981A (pt)	1981-03-31
ZA805775B (en)	1981-09-30
EP0025955B1 (de)	1985-01-23

Legal Events

Date	Code	Title	Description
2004-08-31	MM	Patent lapsed	Owner name: SIEMENS AKTIENGESELLSCHAFT

Publication	Publication Date	Title
FI803135L (fi)	1981-04-05	Imidazodiazepin-derivat
FI802358A (fi)	1981-01-31	Laminatmaterial
FI800790A (fi)	1981-03-06	Fjaerrvaermeroer
FI802122A (fi)	1981-01-04	Braenslepatron avsedd foer en kokarreaktor
AT363172B (de)	1981-07-10	Markhoehlennagel
ATA36179A (de)	1980-03-15	Mikrohaertepruefer
FI802576A (fi)	1981-02-17	Beklaednadselement foer fasadytor
FI803639L (fi)	1981-05-28	Hopfogningsbeslag
FI802119A (fi)	1981-01-07	Partikelartade blekningsblandningar
FI803777L (fi)	1981-06-12	Pulsgenerator foer horisontalavlaenkningssystem
FI801104A (fi)	1980-10-10	Oeltillverkning
AT369471B (de)	1983-01-10	Verbandsmauerwerk
FI800735A (fi)	1980-09-13	9-aminoalkylfluorener
FI801890A (fi)	1981-02-26	Axeltaetningsring
FI803488L (fi)	1981-05-30	Inloppslaoda foer virapressar
AT383864B (de)	1987-09-10	Raffstore
FI791906A (fi)	1980-12-15	Vedklappshuggare
FI801054A (fi)	1980-11-24	Reningsfoerfarande foer ursodesoxikolsyra
FI800931A (fi)	1980-09-30	Inmatningsanordning foer aktionsturbin
FI800369A (fi)	1980-08-08	Metallprofilstaong
AT364180B (de)	1981-09-25	Diaraehmchen
DK183080A (da)	1980-10-29	Skraatagsvindue
FI802008A (fi)	1980-12-26	Bensimidazolderivat
FI800533A (fi)	1980-08-27	Bildroer foer faergtelevision
FI802450A (fi)	1981-02-15	Skoerdetroeska