DE3578667D1 - Ultraschallwandler zur anwendung in einer korrosiven/abschleifenden umgebung. - Google Patents

Ultraschallwandler zur anwendung in einer korrosiven/abschleifenden umgebung.

Info

Publication number
DE3578667D1
DE3578667D1 DE8585101849T DE3578667T DE3578667D1 DE 3578667 D1 DE3578667 D1 DE 3578667D1 DE 8585101849 T DE8585101849 T DE 8585101849T DE 3578667 T DE3578667 T DE 3578667T DE 3578667 D1 DE3578667 D1 DE 3578667D1
Authority
DE
Germany
Prior art keywords
corrosive
ultrasonic transducer
abrasive environment
abrasive
environment
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
Application number
DE8585101849T
Other languages
English (en)
Inventor
John B Kirby
Richard Paglia
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Polaroid Corp
Original Assignee
Polaroid Corp
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 Polaroid Corp filed Critical Polaroid Corp
Application granted granted Critical
Publication of DE3578667D1 publication Critical patent/DE3578667D1/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R19/00—Electrostatic transducers
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Fluid Pressure (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Transducers For Ultrasonic Waves (AREA)
DE8585101849T 1984-03-08 1985-02-20 Ultraschallwandler zur anwendung in einer korrosiven/abschleifenden umgebung. Expired - Fee Related DE3578667D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/587,706 US4872148A (en) 1984-03-08 1984-03-08 Ultrasonic transducer for use in a corrosive/abrasive environment

Publications (1)

Publication Number Publication Date
DE3578667D1 true DE3578667D1 (de) 1990-08-23

Family

ID=24350865

Family Applications (2)

Application Number Title Priority Date Filing Date
DE198585101849T Pending DE154256T1 (de) 1984-03-08 1985-02-20 Ultraschallwandler zur anwendung in einer korrosiven/abschleifenden umgebung.
DE8585101849T Expired - Fee Related DE3578667D1 (de) 1984-03-08 1985-02-20 Ultraschallwandler zur anwendung in einer korrosiven/abschleifenden umgebung.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE198585101849T Pending DE154256T1 (de) 1984-03-08 1985-02-20 Ultraschallwandler zur anwendung in einer korrosiven/abschleifenden umgebung.

Country Status (5)

Country Link
US (1) US4872148A (de)
EP (1) EP0154256B1 (de)
JP (1) JPS60232798A (de)
CA (1) CA1274619A (de)
DE (2) DE154256T1 (de)

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5022341A (en) * 1990-10-15 1991-06-11 Eveanowsky Jr Stanley J Horn
US5200932A (en) * 1992-01-17 1993-04-06 Ljung Bo H G Underwater audible signalling device
US5301170A (en) * 1992-12-02 1994-04-05 Cedarapids, Inc. Ultrasonic sensor mounting device
US5753302A (en) * 1996-04-09 1998-05-19 David Sarnoff Research Center, Inc. Acoustic dispenser
CH691334A5 (fr) 1997-08-28 2001-06-29 Asulab Sa Appareillage susceptible d'être immergé et comprenant un transducteur sonore.
EP0899634B1 (de) * 1997-08-29 2003-07-02 Asulab S.A. Vorrichtung zur Verwendung unter Wasser und mit einem Schallwandler
US7065224B2 (en) 2001-09-28 2006-06-20 Sonionmicrotronic Nederland B.V. Microphone for a hearing aid or listening device with improved internal damping and foreign material protection
US8520887B2 (en) * 2004-08-16 2013-08-27 Hpv Technologies, Inc. Full range planar magnetic transducers and arrays thereof
US7415121B2 (en) 2004-10-29 2008-08-19 Sonion Nederland B.V. Microphone with internal damping
US7480209B2 (en) * 2007-05-29 2009-01-20 Harris Corporation Submersible loudspeaker assembly
GB0721162D0 (en) * 2007-10-29 2007-12-05 Sonitor Technologies As Patient wrist tag
EP2580922B1 (de) 2010-06-14 2019-03-20 Turtle Beach Corporation Verbesserte verarbeitung parametrischer signale sowie emittersysteme und verfahren dafür
WO2013106596A1 (en) 2012-01-10 2013-07-18 Parametric Sound Corporation Amplification systems, carrier tracking systems and related methods for use in parametric sound systems
WO2013158298A1 (en) * 2012-04-18 2013-10-24 Parametric Sound Corporation Parametric transducers related methods
US8934650B1 (en) 2012-07-03 2015-01-13 Turtle Beach Corporation Low profile parametric transducers and related methods
US8903104B2 (en) 2013-04-16 2014-12-02 Turtle Beach Corporation Video gaming system with ultrasonic speakers
US9332344B2 (en) 2013-06-13 2016-05-03 Turtle Beach Corporation Self-bias emitter circuit
US8988911B2 (en) 2013-06-13 2015-03-24 Turtle Beach Corporation Self-bias emitter circuit
FR3013176B1 (fr) * 2013-11-08 2017-03-24 Thales Sa Ensemble haut-parleur etanche pour forte profondeur
DE102015213989A1 (de) * 2015-07-24 2017-01-26 Robert Bosch Gmbh Akustischer Sensor zum Aussenden und/oder Empfangen akustischer Signale
US10877137B2 (en) * 2016-12-02 2020-12-29 Magna Electronics Inc. Vehicle sensing system with ultrasonic transducer
KR102347260B1 (ko) * 2019-08-27 2022-01-05 소나테크 주식회사 Difar 센서 하우징 및 difar 센서 하우징용 분해 장치

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3311703A (en) * 1963-05-21 1967-03-28 Carl E Grinstead Microphone with low frequency filter
JPS4912598Y1 (de) * 1970-07-14 1974-03-28
US3768069A (en) * 1972-01-17 1973-10-23 Columbia Broadcasting Syst Inc Encased gradient hydrophone assembly
US3778562A (en) * 1973-10-21 1973-12-11 Dayton Wright Ass Ltd Electrostatic loudspeaker having acoustic wavefront modifying device
US3944756A (en) * 1975-03-05 1976-03-16 Electro-Voice, Incorporated Electret microphone
JPS5654711Y2 (de) * 1976-06-11 1981-12-19
US4081626A (en) * 1976-11-12 1978-03-28 Polaroid Corporation Electrostatic transducer having narrowed directional characteristic
JPS55125794A (en) * 1979-03-22 1980-09-27 Hitachi Ltd Corrosion proof transmitter and receiver and its manufacture
GB2064263B (en) * 1979-11-30 1983-08-03 Pye Electronic Prod Ltd Microphone unit
JPS57192195A (en) * 1981-05-15 1982-11-26 Beard Terry D Electric-acoustic transducer
US4403117A (en) * 1981-06-04 1983-09-06 Polaroid Corporation Sonic transducer having diaphragm tensioning spring directly attached to diaphragm
DE3143850A1 (de) * 1981-11-05 1983-06-01 Peerless-Mb Gmbh Feinmechanik Und Elektronik, 6951 Obrigheim Elektroakustischer wandler
EP0132039A3 (de) * 1983-06-09 1986-07-23 Robert Bacon Pepper Feuchtigkeitsbeständige Abdeckung für einen elektroakustischen Wandler
WO1985002748A1 (en) * 1983-12-05 1985-06-20 Polaroid Corporation High energy ultrasonic transducer

Also Published As

Publication number Publication date
EP0154256A2 (de) 1985-09-11
CA1274619A (en) 1990-09-25
US4872148A (en) 1989-10-03
JPS60232798A (ja) 1985-11-19
DE154256T1 (de) 1986-10-16
EP0154256A3 (en) 1986-07-30
EP0154256B1 (de) 1990-07-18

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee