NO981444L - Akustisk transduser, hydrofon med slik transduser og fremgangsmÕte for fremstilling av hydrofoner - Google Patents

Akustisk transduser, hydrofon med slik transduser og fremgangsmÕte for fremstilling av hydrofoner

Info

Publication number
NO981444L
NO981444L NO981444A NO981444A NO981444L NO 981444 L NO981444 L NO 981444L NO 981444 A NO981444 A NO 981444A NO 981444 A NO981444 A NO 981444A NO 981444 L NO981444 L NO 981444L
Authority
NO
Norway
Prior art keywords
transducer
hydrophones
hydrophone
producing
acoustic
Prior art date
Application number
NO981444A
Other languages
English (en)
Norwegian (no)
Other versions
NO981444D0 (no
Inventor
Win H Chang
Algernon S Badger
Bernard Simensky
Original Assignee
Input Output Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Input Output Inc filed Critical Input Output Inc
Publication of NO981444D0 publication Critical patent/NO981444D0/no
Publication of NO981444L publication Critical patent/NO981444L/no

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
    • G01V1/16—Receiving elements for seismic signals; Arrangements or adaptations of receiving elements
    • G01V1/18—Receiving elements, e.g. seismometer, geophone or torque detectors, for localised single point measurements
    • G01V1/186—Hydrophones
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
    • G01H11/06—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means
    • G01H11/08—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means using piezoelectric devices

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Acoustics & Sound (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Surgical Instruments (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Electrophonic Musical Instruments (AREA)
NO981444A 1995-10-02 1998-03-31 Akustisk transduser, hydrofon med slik transduser og fremgangsmÕte for fremstilling av hydrofoner NO981444L (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/537,972 US5642332A (en) 1995-10-02 1995-10-02 Acoustic transducer
PCT/US1996/015897 WO1997013163A2 (en) 1995-10-02 1996-10-02 Acoustic transducer

Publications (2)

Publication Number Publication Date
NO981444D0 NO981444D0 (no) 1998-03-31
NO981444L true NO981444L (no) 1998-06-02

Family

ID=24144890

Family Applications (1)

Application Number Title Priority Date Filing Date
NO981444A NO981444L (no) 1995-10-02 1998-03-31 Akustisk transduser, hydrofon med slik transduser og fremgangsmÕte for fremstilling av hydrofoner

Country Status (6)

Country Link
US (1) US5642332A (de)
EP (1) EP0858721A4 (de)
CN (1) CN1126430C (de)
AU (1) AU714632B2 (de)
NO (1) NO981444L (de)
WO (1) WO1997013163A2 (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6460112B1 (en) 1999-02-23 2002-10-01 Netlogic Microsystems, Llc Method and apparatus for determining a longest prefix match in a content addressable memory device
CA2396260C (en) * 2000-01-07 2007-09-11 Lewis Athanas Mechanical-to-acoustical transformer and multi-media flat film speaker
AUPS279202A0 (en) * 2002-06-05 2002-06-27 Sportzwhistle Pty Ltd Transducer mounting
AU2003229129B2 (en) * 2002-06-05 2006-03-09 Sportzwhistle Pty Ltd Piezoelectric transducer systems
KR20080080258A (ko) * 2005-05-31 2008-09-03 에모 라브스, 인크. 기계-음향 변환기용 최적 압전체 설계
US20100322455A1 (en) * 2007-11-21 2010-12-23 Emo Labs, Inc. Wireless loudspeaker
US8189851B2 (en) 2009-03-06 2012-05-29 Emo Labs, Inc. Optically clear diaphragm for an acoustic transducer and method for making same
US20110044476A1 (en) * 2009-08-14 2011-02-24 Emo Labs, Inc. System to generate electrical signals for a loudspeaker
CN103152659A (zh) * 2013-02-26 2013-06-12 广东欧珀移动通信有限公司 一种压电陶瓷扬声器保护装置及移动终端
WO2014143927A2 (en) 2013-03-15 2014-09-18 Emo Labs, Inc. Acoustic transducers
US9772220B1 (en) 2013-12-06 2017-09-26 Harris Corporation Hydrophone
USD733678S1 (en) 2013-12-27 2015-07-07 Emo Labs, Inc. Audio speaker
USD741835S1 (en) 2013-12-27 2015-10-27 Emo Labs, Inc. Speaker
USD748072S1 (en) 2014-03-14 2016-01-26 Emo Labs, Inc. Sound bar audio speaker

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3187300A (en) * 1963-01-29 1965-06-01 Chesapeake Instr Corp Pressure-compensated transducer
US3832762A (en) * 1972-05-22 1974-09-03 Texas Instruments Inc Method of producing a matched parameter acceleration cancelling hydrophone
US3970878A (en) * 1975-03-31 1976-07-20 Teledyne Exploration Company Piezoelectric transducer unit and hydrophone assembly
US3979565A (en) * 1975-08-11 1976-09-07 Westinghouse Electric Corporation Metal enclosed transducer assembly
US4004266A (en) * 1975-12-05 1977-01-18 The United States Of America As Represented By The Secretary Of The Navy Transducer array having low cross-coupling
US4431937A (en) * 1981-10-26 1984-02-14 Sfe Technologies Piezoelectric crystal assembly including protective mounting and covering means
US4618797A (en) * 1984-12-24 1986-10-21 Cline David J Environmentally sealed piezoelectric sensing assembly for electrical switch
US4999819A (en) * 1990-04-18 1991-03-12 The Pennsylvania Research Corporation Transformed stress direction acoustic transducer
US5276657A (en) * 1992-02-12 1994-01-04 The Pennsylvania Research Corporation Metal-electroactive ceramic composite actuators

Also Published As

Publication number Publication date
EP0858721A2 (de) 1998-08-19
NO981444D0 (no) 1998-03-31
CN1202301A (zh) 1998-12-16
WO1997013163A3 (en) 1997-05-15
AU714632B2 (en) 2000-01-06
EP0858721A4 (de) 2001-08-29
US5642332A (en) 1997-06-24
CN1126430C (zh) 2003-10-29
AU7389296A (en) 1997-04-28
WO1997013163A2 (en) 1997-04-10

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Legal Events

Date Code Title Description
FC2A Withdrawal, rejection or dismissal of laid open patent application