CA1321638C - Transducteur ultrasonique - Google Patents

Transducteur ultrasonique

Info

Publication number
CA1321638C
CA1321638C CA000600967A CA600967A CA1321638C CA 1321638 C CA1321638 C CA 1321638C CA 000600967 A CA000600967 A CA 000600967A CA 600967 A CA600967 A CA 600967A CA 1321638 C CA1321638 C CA 1321638C
Authority
CA
Canada
Prior art keywords
wear
transducer
piezoelectric element
thickness
spacer
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 - Lifetime
Application number
CA000600967A
Other languages
English (en)
Inventor
Dov Hazony
Richard E. Berris, Jr.
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.)
Cardinal Pumps & Exchangers Inc
Original Assignee
JW Harley 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
Priority claimed from US07/219,076 external-priority patent/US4907454A/en
Application filed by JW Harley Inc filed Critical JW Harley Inc
Application granted granted Critical
Publication of CA1321638C publication Critical patent/CA1321638C/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/24—Probes
    • G01N29/2437—Piezoelectric probes

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
CA000600967A 1988-07-14 1989-05-29 Transducteur ultrasonique Expired - Lifetime CA1321638C (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US219,076 1988-07-14
US07/219,076 US4907454A (en) 1985-02-19 1988-07-14 Ultrasonic transducer

Publications (1)

Publication Number Publication Date
CA1321638C true CA1321638C (fr) 1993-08-24

Family

ID=22817759

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000600967A Expired - Lifetime CA1321638C (fr) 1988-07-14 1989-05-29 Transducteur ultrasonique

Country Status (1)

Country Link
CA (1) CA1321638C (fr)

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Legal Events

Date Code Title Description
MKEX Expiry

Effective date: 20100824