GB1266143A - - Google Patents

Info

Publication number
GB1266143A
GB1266143A GB1266143DA GB1266143A GB 1266143 A GB1266143 A GB 1266143A GB 1266143D A GB1266143D A GB 1266143DA GB 1266143 A GB1266143 A GB 1266143A
Authority
GB
United Kingdom
Prior art keywords
conductive
crystal
case
stud
metal
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
Application number
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 filed Critical
Publication of GB1266143A publication Critical patent/GB1266143A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
    • H01G7/00—Capacitors in which the capacitance is varied by non-mechanical means; Processes of their manufacture
    • H01G7/02—Electrets, i.e. having a permanently-polarised dielectric
    • H01G7/028—Electrets, i.e. having a permanently-polarised dielectric having a heterogeneous dielectric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
    • B06B1/0644—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a single piezoelectric element
    • B06B1/0662—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a single piezoelectric element with an electrode on the sensitive surface
    • B06B1/0681—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a single piezoelectric element with an electrode on the sensitive surface and a damping structure
    • B06B1/0685—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using a single piezoelectric element with an electrode on the sensitive surface and a damping structure on the back only of piezoelectric elements

Abstract

1,266,143. Ultrasonic transducers. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. 26 March, 1969 [3 April, 1968], No. 16045/68. Heading H4J. In an ultrasonic transducer assembly comprising a crystal 1 and a backing member 5, the rear face of the member 5 is conductive and a spring 13 provides electrical connection thereto and urges the front electrode surface 2 of the crystals into contact with a conductive case 6. A crystal 1 of piezoelectric or ferroelectric material (e.g. quartz or lead zirconate titanate) has electrodes 2, 3, the electrode 3 being electrically connected by conductive cement 4 to a backing member 5. A metal case 6 has an inturned lip 7 engaging electrode 2. Within the case 6 is an insulating layer 8. A metal stud 9 is threaded into member 5 and the case 6 is closed by a metal plate 10 mounting a waterproof connector socket 11. A conductive spring 13 between a stud 12 of the socket 11 and the stud 9 forms a conductive path between the connector 11 and crystal 1. Member 5 is retained by a spacer ring 14 and a rubber 0-ring 15. Waterproof seals 16, 17 are provided. The crystal 1 preferably comprises synthetic resin loaded with piezoelectric powder, moulded to shape and polarized.
GB1266143D 1968-04-03 1968-04-03 Expired GB1266143A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1604568 1968-04-03

Publications (1)

Publication Number Publication Date
GB1266143A true GB1266143A (en) 1972-03-08

Family

ID=10070143

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1266143D Expired GB1266143A (en) 1968-04-03 1968-04-03

Country Status (3)

Country Link
DE (1) DE1916847A1 (en)
GB (1) GB1266143A (en)
NL (1) NL6905281A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997002720A1 (en) * 1995-07-06 1997-01-23 Bo Nilsson Ultrasonic transducers method for fixing ultrasonic transducers and high output power ultrasonic transducers
WO1998052068A1 (en) * 1997-05-12 1998-11-19 Dwl Elektronische Systeme Gmbh Multifrequency ultrasound probe
US5955823A (en) * 1998-05-12 1999-09-21 Ultra Sonus Ab High power ultrasonic transducer
US6016023A (en) * 1998-05-12 2000-01-18 Ultra Sonus Ab Tubular ultrasonic transducer
US6051913A (en) * 1998-10-28 2000-04-18 Hewlett-Packard Company Electroacoustic transducer and acoustic isolator for use therein
US6124664A (en) * 1998-05-01 2000-09-26 Scimed Life Systems, Inc. Transducer backing material
CN107913841A (en) * 2016-10-10 2018-04-17 上海声定科技有限公司 A kind of oscillator for ultrasonic transducer

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1786225B1 (en) * 1968-09-03 1971-06-16 Otto Angerpointner Collecting device for joint filing of documents
DE19629801C2 (en) * 1996-07-24 1998-05-07 Elba Buerosysteme Erich Kraut Tack strips
DE19641330A1 (en) * 1996-10-08 1998-04-09 Beiersdorf Ag Self-adhesive ring binder strip

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997002720A1 (en) * 1995-07-06 1997-01-23 Bo Nilsson Ultrasonic transducers method for fixing ultrasonic transducers and high output power ultrasonic transducers
WO1998052068A1 (en) * 1997-05-12 1998-11-19 Dwl Elektronische Systeme Gmbh Multifrequency ultrasound probe
US6344024B1 (en) 1997-05-12 2002-02-05 Dwl Elektronische Systeme Gmbh Multifrequency ultrasound probe
US6124664A (en) * 1998-05-01 2000-09-26 Scimed Life Systems, Inc. Transducer backing material
US6315933B1 (en) 1998-05-01 2001-11-13 Scimed Life Systems, Inc. Method of application of a transducer backing material
US5955823A (en) * 1998-05-12 1999-09-21 Ultra Sonus Ab High power ultrasonic transducer
US6016023A (en) * 1998-05-12 2000-01-18 Ultra Sonus Ab Tubular ultrasonic transducer
US6137209A (en) * 1998-05-12 2000-10-24 Nilsson; Bo High power ultrasonic transducer
US6051913A (en) * 1998-10-28 2000-04-18 Hewlett-Packard Company Electroacoustic transducer and acoustic isolator for use therein
CN107913841A (en) * 2016-10-10 2018-04-17 上海声定科技有限公司 A kind of oscillator for ultrasonic transducer

Also Published As

Publication number Publication date
DE1916847A1 (en) 1969-11-06
NL6905281A (en) 1969-10-07

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Legal Events

Date Code Title Description
CSNS Application of which complete specification have been accepted and published, but patent is not sealed