FR2688112B1 - Transducteurs electro-acoustiques directifs comportant une coque etanche en deux parties. - Google Patents
Transducteurs electro-acoustiques directifs comportant une coque etanche en deux parties.Info
- Publication number
- FR2688112B1 FR2688112B1 FR8805660A FR8805660A FR2688112B1 FR 2688112 B1 FR2688112 B1 FR 2688112B1 FR 8805660 A FR8805660 A FR 8805660A FR 8805660 A FR8805660 A FR 8805660A FR 2688112 B1 FR2688112 B1 FR 2688112B1
- Authority
- FR
- France
- Prior art keywords
- parts
- acoustic transducers
- sealed shell
- directional electro
- electro
- 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
Classifications
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
- G10K9/12—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated
- G10K9/121—Flextensional transducers
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8805660A FR2688112B1 (fr) | 1988-04-28 | 1988-04-28 | Transducteurs electro-acoustiques directifs comportant une coque etanche en deux parties. |
NL8900962A NL8900962A (nl) | 1988-04-28 | 1989-04-18 | Gerichte elektro-acoustische omzetter met een tweedelige dichte schaal. |
IT8920231A IT1237008B (it) | 1988-04-28 | 1989-04-21 | Trasduttori elettroacustici direttivi comportanti un guscio stagno in due parti |
GB8909399A GB2263842B (en) | 1988-04-28 | 1989-04-25 | Electro-acoustic transducers comprising a sealed shell |
DE3914143A DE3914143C2 (de) | 1988-04-28 | 1989-04-28 | Elektroakustischer Wandler mit Richtwirkung und einer dichten, zweiteiligen Schale |
US07/360,944 US5546361A (en) | 1988-04-28 | 1989-04-28 | Directional electro-acoustic transducers comprising a sealed sell consisting of two portions |
SE9101425A SE470246B (sv) | 1988-04-28 | 1991-05-13 | Elektroakustisk omvandlare innefattande en tätad kapsel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8805660A FR2688112B1 (fr) | 1988-04-28 | 1988-04-28 | Transducteurs electro-acoustiques directifs comportant une coque etanche en deux parties. |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2688112A1 FR2688112A1 (fr) | 1993-09-03 |
FR2688112B1 true FR2688112B1 (fr) | 1996-10-11 |
Family
ID=9365771
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8805660A Expired - Fee Related FR2688112B1 (fr) | 1988-04-28 | 1988-04-28 | Transducteurs electro-acoustiques directifs comportant une coque etanche en deux parties. |
Country Status (7)
Country | Link |
---|---|
US (1) | US5546361A (fr) |
DE (1) | DE3914143C2 (fr) |
FR (1) | FR2688112B1 (fr) |
GB (1) | GB2263842B (fr) |
IT (1) | IT1237008B (fr) |
NL (1) | NL8900962A (fr) |
SE (1) | SE470246B (fr) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE9401761D0 (sv) * | 1994-05-19 | 1994-05-19 | Lars Staahl | Högpresterande skal/membran |
NO301795B1 (no) * | 1995-06-28 | 1997-12-08 | Unaco Systems Ab | Elektrodynamisk drivenhet for akustiske sendere |
NO303472B1 (no) * | 1996-04-30 | 1998-07-13 | Unaco Systems Ab | Akustisk sender |
NO961765L (no) * | 1996-04-30 | 1997-10-31 | Unaco Systems Ab | Akustisk sender II |
US7551518B1 (en) * | 2008-02-26 | 2009-06-23 | Pgs Geophysical As | Driving means for acoustic marine vibrator |
US8094514B2 (en) * | 2008-11-07 | 2012-01-10 | Pgs Geophysical As | Seismic vibrator array and method for using |
US7974152B2 (en) * | 2009-06-23 | 2011-07-05 | Pgs Geophysical As | Control system for marine vibrators and seismic acquisition system using such control system |
US8335127B2 (en) * | 2009-08-12 | 2012-12-18 | Pgs Geophysical As | Method for generating spread spectrum driver signals for a seismic vibrator array using multiple biphase modulation operations in each driver signal chip |
US8223592B2 (en) * | 2010-06-11 | 2012-07-17 | Graber Curtis E | Omni-directional acoustic radiator with radial waveguides for submersible multi-transducer array |
US8446798B2 (en) | 2010-06-29 | 2013-05-21 | Pgs Geophysical As | Marine acoustic vibrator having enhanced low-frequency amplitude |
US8670292B2 (en) | 2011-08-12 | 2014-03-11 | Pgs Geophysical As | Electromagnetic linear actuators for marine acoustic vibratory sources |
US9417017B2 (en) | 2012-03-20 | 2016-08-16 | Thermal Corp. | Heat transfer apparatus and method |
FR2996009B1 (fr) * | 2012-09-26 | 2015-06-26 | Cggveritas Services Sa | Source d'onde sismique piezoelectrique volumetrique et procedes associes |
US9322945B2 (en) | 2013-03-06 | 2016-04-26 | Pgs Geophysical As | System and method for seismic surveying using distributed sources |
RU2556277C1 (ru) * | 2013-12-09 | 2015-07-10 | Олег Савельевич Кочетов | Вибратор для имитации гармонического и случайного воздействий |
WO2015101643A1 (fr) * | 2013-12-30 | 2015-07-09 | Pgs Geophysical As | Système de commande pour générateurs de vibrations maritimes |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2302656A1 (fr) * | 1975-02-27 | 1976-09-24 | France Etat | Transducteur piezoelectrique pour basses frequences |
FR2425785A1 (fr) * | 1978-05-08 | 1979-12-07 | France Etat | Transducteurs piezo-electriques a amplification mecanique pour tres basses frequences et antennes acoustiques |
US4420826A (en) * | 1981-07-06 | 1983-12-13 | Sanders Associates, Inc. | Stress relief for flextensional transducer |
US4462093A (en) * | 1982-06-28 | 1984-07-24 | Sanders Associates, Inc. | Symmetrical shell support for flextensional transducer |
JPS6143897A (ja) * | 1984-08-07 | 1986-03-03 | Nec Corp | 低周波水中超音波送波器 |
EP0209238A3 (fr) * | 1985-06-14 | 1989-03-08 | Gould Inc. | Transducteur acoustique à double piston dont on peut choisir la directivité |
WO1987005773A1 (fr) * | 1986-03-19 | 1987-09-24 | The Secretary Of State For Defence In Her Britanni | Transducteurs flexionnels a precontrainte |
US4764907A (en) * | 1986-04-30 | 1988-08-16 | Allied Corporation | Underwater transducer |
US4706230A (en) * | 1986-08-29 | 1987-11-10 | Nec Corporation | Underwater low-frequency ultrasonic wave transmitter |
US4845688A (en) * | 1988-03-21 | 1989-07-04 | Image Acoustics, Inc. | Electro-mechanical transduction apparatus |
FR2639789A1 (fr) * | 1988-12-07 | 1990-06-08 | Bernier Jerome | Outil de jardinage permettant de soulever automatiquement une motte de terre, sans effort et sans autres gestes que ceux du labourage, en conservant une position droite et le controle de la motte |
-
1988
- 1988-04-28 FR FR8805660A patent/FR2688112B1/fr not_active Expired - Fee Related
-
1989
- 1989-04-18 NL NL8900962A patent/NL8900962A/nl not_active Application Discontinuation
- 1989-04-21 IT IT8920231A patent/IT1237008B/it active
- 1989-04-25 GB GB8909399A patent/GB2263842B/en not_active Expired - Fee Related
- 1989-04-28 US US07/360,944 patent/US5546361A/en not_active Expired - Fee Related
- 1989-04-28 DE DE3914143A patent/DE3914143C2/de not_active Expired - Fee Related
-
1991
- 1991-05-13 SE SE9101425A patent/SE470246B/sv unknown
Also Published As
Publication number | Publication date |
---|---|
IT1237008B (it) | 1993-05-13 |
DE3914143C2 (de) | 1999-02-18 |
IT8920231A0 (it) | 1989-04-21 |
SE9101425L (sv) | 1993-08-13 |
GB2263842A (en) | 1993-08-04 |
DE3914143A1 (de) | 1993-10-21 |
GB2263842B (en) | 1994-01-12 |
US5546361A (en) | 1996-08-13 |
SE470246B (sv) | 1993-12-13 |
GB8909399D0 (en) | 1993-05-26 |
NL8900962A (nl) | 1992-12-01 |
FR2688112A1 (fr) | 1993-09-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |