FR2240813B1 - - Google Patents
Info
- Publication number
- FR2240813B1 FR2240813B1 FR7329805A FR7329805A FR2240813B1 FR 2240813 B1 FR2240813 B1 FR 2240813B1 FR 7329805 A FR7329805 A FR 7329805A FR 7329805 A FR7329805 A FR 7329805A FR 2240813 B1 FR2240813 B1 FR 2240813B1
- Authority
- FR
- France
- 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
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
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/18—Methods or devices for transmitting, conducting or directing sound
- G10K11/20—Reflecting arrangements
- G10K11/205—Reflecting arrangements for underwater use
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Multimedia (AREA)
- Aerials With Secondary Devices (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7329805A FR2240813B1 (en) | 1973-08-16 | 1973-08-16 | |
DE2435336A DE2435336A1 (en) | 1973-08-16 | 1974-07-23 | SOUND WAVE UNDERWATER REFLECTOR |
GB3389074A GB1465932A (en) | 1973-08-16 | 1974-07-31 | Sound reflective elements |
US494909A US3901352A (en) | 1973-08-16 | 1974-08-05 | Underwater reflector of sound waves |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7329805A FR2240813B1 (en) | 1973-08-16 | 1973-08-16 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2240813A1 FR2240813A1 (en) | 1975-03-14 |
FR2240813B1 true FR2240813B1 (en) | 1976-04-30 |
Family
ID=9124019
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7329805A Expired FR2240813B1 (en) | 1973-08-16 | 1973-08-16 |
Country Status (4)
Country | Link |
---|---|
US (1) | US3901352A (en) |
DE (1) | DE2435336A1 (en) |
FR (1) | FR2240813B1 (en) |
GB (1) | GB1465932A (en) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2307276A1 (en) * | 1975-04-11 | 1976-11-05 | France Etat | HYDROPHONE WITH ACOUSTIC REFLECTOR |
FR2344199A1 (en) * | 1976-03-08 | 1977-10-07 | France Etat | LARGE BANDWIDTH ACOUSTIC ANTENNAS |
FR2420773A1 (en) * | 1978-03-23 | 1979-10-19 | France Etat | SUBMERSIBLE ACOUSTIC REFLECTOR AND MANUFACTURING PROCESS |
FR2536195A1 (en) * | 1982-11-17 | 1984-05-18 | Sintra Alcatel Sa | Underwater acoustic reflector |
FR2539541B1 (en) * | 1983-01-19 | 1986-09-19 | Thomson Csf | DEVICE WITH ACOUSTIC WAVE REFLECTIVE INTERFACE |
US4674595A (en) * | 1985-11-20 | 1987-06-23 | The United States Of America As Represented By The Secretary Of The Navy | Underwater acoustic pressure release baffle for depths to 2000 feet |
GB2204217B (en) * | 1987-05-02 | 1990-05-23 | Gec Avionics | Acoustic reflector |
GB2422282A (en) | 2005-01-14 | 2006-07-19 | Secr Defence | Acoustic reflector |
GB2458810B (en) * | 2008-04-01 | 2010-05-05 | Secr Defence | Acoustic reflector |
WO2009122184A2 (en) | 2008-04-02 | 2009-10-08 | The Secretary Of State For Defence | Tunable acoustic reflector |
EP2419899B1 (en) | 2009-06-25 | 2020-06-24 | Defence Research And Development Organisation | An acoustic energy reflector |
MX2013000444A (en) * | 2010-07-16 | 2013-06-05 | Subsea Asset Location Tech Ltd | Acoustic reflectors. |
US8857368B2 (en) | 2011-09-21 | 2014-10-14 | The Boeing Company | Aircraft location system for locating aircraft in water environments |
EP3570560B1 (en) * | 2017-04-26 | 2021-01-20 | Dalian University Of Technology | Broadband ultrathin sound wave diffusion structure |
CN110580896A (en) * | 2019-08-29 | 2019-12-17 | 罗家骏 | Underwater vacuum corner reflector |
CN111928736B (en) * | 2020-06-18 | 2022-11-11 | 天津科技大学 | In-situ self-expansion underwater camouflage body |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1974951A (en) * | 1929-11-18 | 1934-09-25 | Doorentz Richard | Sound damping intermediate layer for ceilings, walls, and the like |
US2811216A (en) * | 1954-04-28 | 1957-10-29 | Harris Transducer Corp | Acoustic baffle construction |
US2884084A (en) * | 1954-10-28 | 1959-04-28 | Sussman Harry | Acoustic panel |
US3756345A (en) * | 1972-02-10 | 1973-09-04 | Honeywell Inc | Underwater acoustic device |
-
1973
- 1973-08-16 FR FR7329805A patent/FR2240813B1/fr not_active Expired
-
1974
- 1974-07-23 DE DE2435336A patent/DE2435336A1/en not_active Withdrawn
- 1974-07-31 GB GB3389074A patent/GB1465932A/en not_active Expired
- 1974-08-05 US US494909A patent/US3901352A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US3901352A (en) | 1975-08-26 |
GB1465932A (en) | 1977-03-02 |
FR2240813A1 (en) | 1975-03-14 |
DE2435336A1 (en) | 1975-03-06 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |