DE68921276D1 - Anpassungselement. - Google Patents

Anpassungselement.

Info

Publication number
DE68921276D1
DE68921276D1 DE68921276T DE68921276T DE68921276D1 DE 68921276 D1 DE68921276 D1 DE 68921276D1 DE 68921276 T DE68921276 T DE 68921276T DE 68921276 T DE68921276 T DE 68921276T DE 68921276 D1 DE68921276 D1 DE 68921276D1
Authority
DE
Germany
Prior art keywords
adjustment element
voids
glass
disclosed
solid material
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
DE68921276T
Other languages
English (en)
Other versions
DE68921276T2 (de
Inventor
Michael John Gill
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.)
BG Group Ltd
Original Assignee
British Gas PLC
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 British Gas PLC filed Critical British Gas PLC
Application granted granted Critical
Publication of DE68921276D1 publication Critical patent/DE68921276D1/de
Publication of DE68921276T2 publication Critical patent/DE68921276T2/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
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • 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
    • G10K11/002—Devices for damping, suppressing, obstructing or conducting sound in acoustic devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H04R17/10—Resonant transducers, i.e. adapted to produce maximum output at a predetermined frequency

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Burglar Alarm Systems (AREA)
  • Impact Printers (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Semiconductor Lasers (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
  • Paper (AREA)
  • Glass Compositions (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Surgical Instruments (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Measuring Fluid Pressure (AREA)
DE68921276T 1988-09-29 1989-09-19 Anpassungselement. Expired - Fee Related DE68921276T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8822903A GB2225426B (en) 1988-09-29 1988-09-29 A transducer

Publications (2)

Publication Number Publication Date
DE68921276D1 true DE68921276D1 (de) 1995-03-30
DE68921276T2 DE68921276T2 (de) 1995-08-10

Family

ID=10644471

Family Applications (1)

Application Number Title Priority Date Filing Date
DE68921276T Expired - Fee Related DE68921276T2 (de) 1988-09-29 1989-09-19 Anpassungselement.

Country Status (12)

Country Link
US (1) US5093810A (de)
EP (1) EP0361757B1 (de)
JP (1) JP2559144B2 (de)
KR (1) KR930010299B1 (de)
AT (1) ATE118917T1 (de)
AU (1) AU607085B2 (de)
CA (1) CA1335213C (de)
DE (1) DE68921276T2 (de)
DK (1) DK475189A (de)
ES (1) ES2068251T3 (de)
GB (1) GB2225426B (de)
HK (1) HK1007033A1 (de)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991018486A1 (en) * 1990-05-14 1991-11-28 Commonwealth Scientific And Industrial Research Organisation A coupling device
GB2246349B (en) * 1990-07-24 1994-06-22 British Gas Plc Method for bonding together hollow glass spheres
DE4115447C2 (de) * 1991-05-11 1994-01-27 Schott Glaswerke Vorrichtung zur Kontrolle der Zerstörung von Konkrementen
GB2276240B (en) * 1993-03-16 1997-01-15 British Gas Plc Fluid flowmeter
DE4325398C1 (de) * 1993-07-29 1994-07-21 Grieshaber Vega Kg Schallwandler mit einer chemisch beständigen Anpaßschicht und Verfahren zur Herstellung einer solchen Anpaßschicht
DE19917429A1 (de) * 1999-04-19 2000-10-26 Sonident Anstalt Vaduz Impulsschallwandler
CN1145407C (zh) * 1999-11-12 2004-04-07 松下电器产业株式会社 声匹配部件及其制造方法,和利用该声匹配部件的超声波发射和接收设备
US6381196B1 (en) * 2000-10-26 2002-04-30 The United States Of America As Represented By The Secretary Of The Navy Sintered viscoelastic particle vibration damping treatment
KR20040086504A (ko) * 2002-01-28 2004-10-11 마츠시타 덴끼 산교 가부시키가이샤 음향 정합층, 초음파 송수파기 및 이들의 제조 방법, 및초음파 유량계
EP1416255A1 (de) * 2002-01-28 2004-05-06 Matsushita Electric Industrial Co., Ltd. Ultraschallsender/empfänger und ultraschall-strömungsmesser
US6788620B2 (en) 2002-05-15 2004-09-07 Matsushita Electric Ind Co Ltd Acoustic matching member, ultrasound transducer, ultrasonic flowmeter and method for manufacturing the same
WO2004057913A1 (ja) * 2002-12-20 2004-07-08 Matsushita Electric Industrial Co., Ltd. 超音波送受波器およびその製造方法、ならびに超音波流量計
WO2005020631A1 (ja) * 2003-08-22 2005-03-03 Matsushita Electric Industrial Co., Ltd. 音響整合体およびその製造方法、ならびに超音波センサおよび超音波送受信装置
JP4638854B2 (ja) * 2006-09-29 2011-02-23 富士フイルム株式会社 超音波用探触子の製造方法
JP2008147731A (ja) * 2006-12-06 2008-06-26 Matsushita Electric Ind Co Ltd 超音波センサ
JP2014137254A (ja) * 2013-01-16 2014-07-28 Panasonic Corp 音響整合部材
JP6399390B2 (ja) * 2013-12-27 2018-10-03 パナソニックＩｐマネジメント株式会社 スピーカおよびａｖ機器
CN108605186B (zh) 2016-06-09 2021-03-09 松下知识产权经营株式会社 层叠体、超声波收发器和超声波流量计

Family Cites Families (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2198885A (en) * 1932-04-21 1940-04-30 Celotex Corp Composite thermal insulating unit
US2707755A (en) * 1950-07-20 1955-05-03 Sperry Prod Inc High absorption backings for ultrasonic crystals
US2797201A (en) * 1953-05-11 1957-06-25 Standard Oil Co Process of producing hollow particles and resulting product
US3515910A (en) * 1968-11-12 1970-06-02 Us Navy Acoustic absorbing material
US3788140A (en) * 1972-02-25 1974-01-29 Gen Signal Corp Electroacoustical flow metering apparatus
US3855847A (en) * 1972-06-20 1974-12-24 Westinghouse Electric Corp Acoustic emission transducer and monitoring system
IT1016750B (it) * 1974-08-01 1977-06-20 Fiat Spa Dispositivo per effettuare median te ultrasuoni la misura della por tata d aria in massa nel condotto di aspirazione di motori a combu stione interna
GB1522620A (en) * 1974-12-05 1978-08-23 Fillite Ltd Moulding processes and material
AT341790B (de) * 1975-09-22 1978-02-27 Ceskomoravske Eternitove Z Nar Verfahren zur herstellung von schwer entzundbaren bis feuerbestandigen schaumstoffen mit geringem raumgewicht
IT1071241B (it) * 1976-07-09 1985-04-02 Fiat Spa Dispositivo per effettuare..mediante ultrasuoni..la misura della portata d aria in massa nel condotto di aspirazione di motori ad iniezione pilotata dal dispositivo stesso
JPS5353393A (en) * 1976-10-25 1978-05-15 Matsushita Electric Ind Co Ltd Ultrasonic probe
GB2048847B (en) * 1978-08-28 1983-07-06 Torobin Leonard B Method and apparatus for producing hollow microspheres
CH636701A5 (de) * 1979-06-08 1983-06-15 Landis & Gyr Ag Messwertgeber zur bestimmung der durchflussmenge einer stroemenden fluessigkeit mit ultraschall.
DE2936672C2 (de) * 1979-09-11 1982-06-03 Siemens AG, 1000 Berlin und 8000 München Kontaktierung für einen Ultraschall-Wandler.
DE2951075C2 (de) * 1979-12-19 1982-04-15 Interatom Internationale Atomreaktorbau Gmbh, 5060 Bergisch Gladbach Akustischer Wandler mit piezoelektrischem Element
JPS56124028A (en) * 1980-03-05 1981-09-29 Furuno Electric Co Ltd Ultrasonic thermometer
DE3301848C2 (de) * 1983-01-20 1984-11-08 Siemens AG, 1000 Berlin und 8000 München Ultraschallwandler
JPS59155019A (ja) * 1983-02-24 1984-09-04 Sanwa Kako Kk 架橋ポリオレフイン発泡体の成形物の製造方法
DE3478357D1 (en) * 1983-03-17 1989-06-29 Matsushita Electric Ind Co Ltd Ultrasonic transducers having improved acoustic impedance matching layers
US4536673A (en) * 1984-01-09 1985-08-20 Siemens Aktiengesellschaft Piezoelectric ultrasonic converter with polyurethane foam damper
US4556814A (en) * 1984-02-21 1985-12-03 Ngk Spark Plug Co., Ltd. Piezoelectric ultrasonic transducer with porous plastic housing
DE3430161A1 (de) * 1984-08-16 1986-02-27 Siemens AG, 1000 Berlin und 8000 München Poroese anpassungsschicht in einem ultraschallapplikator
JPS61169100A (ja) * 1985-01-22 1986-07-30 Matsushita Electric Ind Co Ltd 超音波送受波器
JPS61139098U (de) * 1985-02-18 1986-08-28
US4683161A (en) * 1985-02-28 1987-07-28 Piezo Electric Products, Inc. Ceramic body with ordered pores
AU583623B2 (en) * 1985-05-20 1989-05-04 Gec Marconi Systems Pty Limited Acoustic decoupling medium
US4630482A (en) * 1985-06-17 1986-12-23 John Traina Method and apparatus for ultrasonic measurements of a medium
JPH01502033A (ja) * 1986-04-10 1989-07-13 ガルフ　ラバー　（オーストラリア）　プティ．リミテッド 低比重耐圧ゴム組成物
US4787252A (en) * 1987-09-30 1988-11-29 Panametrics, Inc. Differential correlation analyzer

Also Published As

Publication number Publication date
ES2068251T3 (es) 1995-04-16
KR900005842A (ko) 1990-04-14
US5093810A (en) 1992-03-03
EP0361757A2 (de) 1990-04-04
GB2225426A (en) 1990-05-30
EP0361757A3 (de) 1991-09-25
DE68921276T2 (de) 1995-08-10
GB2225426B (en) 1993-05-26
KR930010299B1 (ko) 1993-10-16
AU607085B2 (en) 1991-02-21
DK475189D0 (da) 1989-09-27
ATE118917T1 (de) 1995-03-15
CA1335213C (en) 1995-04-11
AU4232989A (en) 1990-04-05
HK1007033A1 (en) 1999-03-26
GB8822903D0 (en) 1988-11-02
JP2559144B2 (ja) 1996-12-04
EP0361757B1 (de) 1995-02-22
JPH02177799A (ja) 1990-07-10
DK475189A (da) 1990-03-30

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: BG PLC, READING, BERKSHIRE, GB

8339 Ceased/non-payment of the annual fee