FR2671927B1 - Transducteurs electro-acoustiques directifs et procedes et dispositifs de fabrication. - Google Patents
Transducteurs electro-acoustiques directifs et procedes et dispositifs de fabrication.Info
- Publication number
- FR2671927B1 FR2671927B1 FR9100660A FR9100660A FR2671927B1 FR 2671927 B1 FR2671927 B1 FR 2671927B1 FR 9100660 A FR9100660 A FR 9100660A FR 9100660 A FR9100660 A FR 9100660A FR 2671927 B1 FR2671927 B1 FR 2671927B1
- Authority
- FR
- France
- Prior art keywords
- directive
- electro
- devices
- manufacturing methods
- acoustic transducers
- 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 - Fee Related
Links
- 238000004519 manufacturing process Methods 0.000 title 1
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
- B06B1/0603—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 piezoelectric bender, e.g. bimorph
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transducers For Ultrasonic Waves (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9100660A FR2671927B1 (fr) | 1991-01-22 | 1991-01-22 | Transducteurs electro-acoustiques directifs et procedes et dispositifs de fabrication. |
EP19920400157 EP0496668B1 (fr) | 1991-01-22 | 1992-01-22 | Transducteurs électro-acoustiques directifs et procédés et dispositifs de fabrication |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9100660A FR2671927B1 (fr) | 1991-01-22 | 1991-01-22 | Transducteurs electro-acoustiques directifs et procedes et dispositifs de fabrication. |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2671927A1 FR2671927A1 (fr) | 1992-07-24 |
FR2671927B1 true FR2671927B1 (fr) | 1995-10-06 |
Family
ID=9408904
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9100660A Expired - Fee Related FR2671927B1 (fr) | 1991-01-22 | 1991-01-22 | Transducteurs electro-acoustiques directifs et procedes et dispositifs de fabrication. |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0496668B1 (fr) |
FR (1) | FR2671927B1 (fr) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2713430B1 (fr) * | 1993-12-03 | 1996-03-08 | France Etat Armement | Procédé d'émission d'ondes acoustiques très basses fréquences à forte puissance, et transducteurs correspondants. |
CN208908495U (zh) * | 2018-08-03 | 2019-05-28 | 瑞声科技(新加坡)有限公司 | 扬声器模组 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2263656B1 (fr) * | 1974-03-05 | 1978-01-06 | France Etat | |
US4081786A (en) * | 1976-08-16 | 1978-03-28 | Etat Francais Represente Par Le Delegue Ministeriel Pour L'armement | Hydrophone having a directive lobe in the form of a cardioid |
US4379211A (en) * | 1980-10-14 | 1983-04-05 | Telephonics Corporation | Arcuately tensioned piezoelectric diaphragm microphone |
US4823042A (en) * | 1986-07-18 | 1989-04-18 | Rich-Mar Corporation | Sonic transducer and method for making the same |
DE8704183U1 (fr) * | 1987-03-20 | 1988-07-21 | Siemens Ag, 1000 Berlin Und 8000 Muenchen, De |
-
1991
- 1991-01-22 FR FR9100660A patent/FR2671927B1/fr not_active Expired - Fee Related
-
1992
- 1992-01-22 EP EP19920400157 patent/EP0496668B1/fr not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0496668A1 (fr) | 1992-07-29 |
EP0496668B1 (fr) | 1994-10-19 |
FR2671927A1 (fr) | 1992-07-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |