GB8921990D0 - Piezoelectric transducer - Google Patents
Piezoelectric transducerInfo
- Publication number
- GB8921990D0 GB8921990D0 GB898921990A GB8921990A GB8921990D0 GB 8921990 D0 GB8921990 D0 GB 8921990D0 GB 898921990 A GB898921990 A GB 898921990A GB 8921990 A GB8921990 A GB 8921990A GB 8921990 D0 GB8921990 D0 GB 8921990D0
- Authority
- GB
- United Kingdom
- Prior art keywords
- piezoelectric transducer
- piezoelectric
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
- B06B1/0644—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a single piezoelectric element
-
- 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
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Transducers For Ultrasonic Waves (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3833234A DE3833234C2 (en) | 1988-09-30 | 1988-09-30 | Procedure for calibrating or testing a piezoceramic transducer |
Publications (3)
Publication Number | Publication Date |
---|---|
GB8921990D0 true GB8921990D0 (en) | 1989-11-15 |
GB2223377A GB2223377A (en) | 1990-04-04 |
GB2223377B GB2223377B (en) | 1993-06-02 |
Family
ID=6364076
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8921990A Expired - Fee Related GB2223377B (en) | 1988-09-30 | 1989-09-29 | A hydrophone and a piezoelectric hydrophone transducer |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0438623B1 (en) |
DE (1) | DE3833234C2 (en) |
GB (1) | GB2223377B (en) |
IT (1) | IT1232453B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4134456A1 (en) * | 1991-10-18 | 1993-04-22 | Klaus Brankamp System Prozessa | Appts. for measurement of force effect in mechanically loader machine part - involves piezoelectric converter fitted in hole of machine part and set in oscillation, the alterations of which are moulded |
JPH09163498A (en) * | 1995-10-06 | 1997-06-20 | Murata Mfg Co Ltd | Solid sphere type piezoelectric speaker |
JP3644259B2 (en) * | 1998-03-24 | 2005-04-27 | 株式会社村田製作所 | Speaker device |
CN100432004C (en) * | 2007-01-16 | 2008-11-12 | 中船重工海声科技有限公司 | Method for preparing piezoelectric ceramic ball shell |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1036120B (en) * | 1954-12-03 | 1958-08-07 | Electroacustic Gmbh | Signaling device designed for use in water |
CA930211A (en) * | 1970-08-20 | 1973-07-17 | Johnson Matthey And Mallory Limited | Piezoelectric transducer and noise making device utilizing same |
IL40315A0 (en) * | 1971-10-27 | 1972-11-28 | American Optical Corp | Apparatus for sonic transcutaneous interrogation of a vessel in vivo |
US3800270A (en) * | 1972-07-12 | 1974-03-26 | Johnson Service Co | Piezoelectric acoustical transducer for transmitting and receiving |
FR2278217A1 (en) * | 1974-07-10 | 1976-02-06 | Schlumberger Prospection | ACOUSTIC TRANSDUCER |
GB1554349A (en) * | 1976-11-01 | 1979-10-17 | Stanford Res Inst Int | Variable focus ultrasonic transducer means |
US4168628A (en) * | 1977-10-20 | 1979-09-25 | Rca Corporation | Pulse-echo ultrasonic-imaging display system having time-varied effective aperture |
GB2006434B (en) * | 1977-10-20 | 1982-03-03 | Rca Corp | Switchable depth of focus pulse-echo ultra-sonic imaging display system |
US4546459A (en) * | 1982-12-02 | 1985-10-08 | Magnavox Government And Industrial Electronics Company | Method and apparatus for a phased array transducer |
GB2144308B (en) * | 1983-07-27 | 1986-09-17 | Db Instrumentation Limited | Electro-acoustic transducer element |
JPS62126874A (en) * | 1985-11-27 | 1987-06-09 | Taga Denki Kk | Ultrasonic vibrator and drive controlling method thereof |
US4703214A (en) * | 1985-11-27 | 1987-10-27 | Taga Electric Co., Ltd. | Ultrasonic vibrator and its drive control method |
US4672592A (en) * | 1985-12-23 | 1987-06-09 | Westinghouse Electric Corp. | Shaded transducer |
GB2201318B (en) * | 1987-02-12 | 1990-10-24 | Udi Group Ltd | Electromechanical transducer |
-
1988
- 1988-09-30 DE DE3833234A patent/DE3833234C2/en not_active Expired - Fee Related
-
1989
- 1989-09-29 GB GB8921990A patent/GB2223377B/en not_active Expired - Fee Related
- 1989-09-29 IT IT8967838A patent/IT1232453B/en active
-
1990
- 1990-01-26 EP EP90101577A patent/EP0438623B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE3833234A1 (en) | 1990-04-12 |
EP0438623B1 (en) | 1995-10-25 |
DE3833234C2 (en) | 1995-03-16 |
GB2223377B (en) | 1993-06-02 |
GB2223377A (en) | 1990-04-04 |
IT8967838A0 (en) | 1989-09-29 |
EP0438623A1 (en) | 1991-07-31 |
IT1232453B (en) | 1992-02-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
732E | Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977) | ||
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19990929 |