ITRM910902A0 - - Google Patents
Info
- Publication number
- ITRM910902A0 ITRM910902A0 IT91RM902A ITRM910902A ITRM910902A0 IT RM910902 A0 ITRM910902 A0 IT RM910902A0 IT 91RM902 A IT91RM902 A IT 91RM902A IT RM910902 A ITRM910902 A IT RM910902A IT RM910902 A0 ITRM910902 A0 IT RM910902A0
- Authority
- IT
- Italy
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
-
- 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
- H04R1/44—Special adaptations for subaqueous use, e.g. for hydrophone
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Transducers For Ultrasonic Waves (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US61977190A | 1990-11-28 | 1990-11-28 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| ITRM910902A0 true ITRM910902A0 (it) | 1991-11-28 |
| ITRM910902A1 ITRM910902A1 (it) | 1993-05-28 |
| IT1303933B1 IT1303933B1 (it) | 2001-03-01 |
Family
ID=24483229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IT1991RM000902A IT1303933B1 (it) | 1990-11-28 | 1991-11-28 | Trasduttore elettro-acustico flessotensionale |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5701277A (it) |
| FR (1) | FR2797552A1 (it) |
| GB (1) | GB2348774B (it) |
| IT (1) | IT1303933B1 (it) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5973440A (en) * | 1997-07-07 | 1999-10-26 | Nitzsche; Fred | Structural component having means for actively varying its stiffness to control vibrations |
| US6781288B2 (en) * | 1999-01-27 | 2004-08-24 | Bae Systems Information And Electronic Systems Integration Inc. | Ultra-low frequency acoustic transducer |
| US6438070B1 (en) * | 1999-10-04 | 2002-08-20 | Halliburton Energy Services, Inc. | Hydrophone for use in a downhole tool |
| KR100386837B1 (ko) * | 2001-05-23 | 2003-06-09 | 한국해양연구원 | 평형 압력의 수중음향 트랜스듀서 |
| US20050073166A1 (en) * | 2003-10-03 | 2005-04-07 | Ford Global Technologies, Llc | Hybrid material body mount for automotive vehicles |
| GB2434709B (en) * | 2004-11-05 | 2009-09-09 | Lockheed Corp | Longitudinally driven slotted cylinder transducer |
| US20110083660A1 (en) * | 2009-10-13 | 2011-04-14 | Barnes Sr Carl Allen | Personal cigarette lighter |
| US10310108B2 (en) * | 2013-12-30 | 2019-06-04 | Pgs Geophysical As | Bow-shaped spring for marine vibrator |
| CA2929297C (en) * | 2015-05-11 | 2023-08-01 | Ultra Electronics Maritime Systems Inc. | Acoustic projector system with non-uniform spacing |
| US9764355B2 (en) | 2015-05-11 | 2017-09-19 | Ultra Electronics Maritime Systems Inc. | Acoustic projector system with non-uniform spacing |
| CN109701858A (zh) * | 2019-02-20 | 2019-05-03 | 海鹰企业集团有限责任公司 | 一种压电水听器阵列的布线结构 |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3277433A (en) * | 1963-10-17 | 1966-10-04 | William J Toulis | Flexural-extensional electromechanical transducer |
| 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 |
| JPS62501182A (ja) * | 1984-12-19 | 1987-05-07 | グ−ルド・インコ−ポレイテッド | 希土類フレクステンシヨン変換器 |
| EP0215657B1 (en) * | 1985-09-12 | 1990-03-21 | British Aerospace Public Limited Company | Sonar transducers |
| US5345428A (en) * | 1986-03-19 | 1994-09-06 | The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland | Flextensional transducers |
| AU597051B2 (en) * | 1986-03-19 | 1990-05-24 | Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland, The | Sonar transducers |
| 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 |
| CA1294360C (en) * | 1988-03-11 | 1992-01-14 | Garfield W. Mcmahon | Ring-shell projector |
| US4862429A (en) * | 1988-10-04 | 1989-08-29 | Raytheon Company | Flextensional electroacoustic transducer with hydrostatically compression-loaded driver |
| US4922470A (en) * | 1988-11-15 | 1990-05-01 | Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of National Defence Of Her Majesty's Canadian Government | Barrel stave projector |
| US4964106A (en) * | 1989-04-14 | 1990-10-16 | Edo Corporation, Western Division | Flextensional sonar transducer assembly |
-
1991
- 1991-11-27 GB GB9125675A patent/GB2348774B/en not_active Expired - Fee Related
- 1991-11-28 FR FR9114730A patent/FR2797552A1/fr not_active Withdrawn
- 1991-11-28 IT IT1991RM000902A patent/IT1303933B1/it active
-
1997
- 1997-01-17 US US08/779,580 patent/US5701277A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| GB2348774A (en) | 2000-10-11 |
| ITRM910902A1 (it) | 1993-05-28 |
| US5701277A (en) | 1997-12-23 |
| FR2797552A1 (fr) | 2001-02-16 |
| GB2348774B (en) | 2001-02-21 |
| GB9125675D0 (en) | 2000-07-05 |
| IT1303933B1 (it) | 2001-03-01 |