GB1234266A - - Google Patents

Info

Publication number
GB1234266A
GB1234266A GB1234266DA GB1234266A GB 1234266 A GB1234266 A GB 1234266A GB 1234266D A GB1234266D A GB 1234266DA GB 1234266 A GB1234266 A GB 1234266A
Authority
GB
United Kingdom
Prior art keywords
sheet
nov
transducers
width
confine
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 GB1234266A publication Critical patent/GB1234266A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/30—Time-delay networks
    • H03H9/36—Time-delay networks with non-adjustable delay time

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Transducers For Ultrasonic Waves (AREA)

Abstract

1,234,266. Electromechanical delay lines. INTERNATIONAL STANDARD ELECTRIC CORP. 7 Nov., 1968 [15 Nov., 1967], No. 52775/68. Heading H3U. A delay line comprises a metal sheet 1 of an iron, nickel and chromium alloy having a thickness of not more than half the wavelength of the ultrasonic wave to be propagated between input and output piezoelectric transducers 2, 3. To confine the wave path 7 to a width approximately equal to the width of the transducers the major surfaces of the sheet 1 are coated with an absorption material as denoted by the dotted areas. A preferred material is an epoxy resin which strongly adheres to the sheet.
GB1234266D 1967-11-15 1968-11-07 Expired GB1234266A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR128274 1967-11-15

Publications (1)

Publication Number Publication Date
GB1234266A true GB1234266A (en) 1971-06-03

Family

ID=8641727

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1234266D Expired GB1234266A (en) 1967-11-15 1968-11-07

Country Status (4)

Country Link
BE (1) BE723818A (en)
DE (1) DE1806909A1 (en)
FR (1) FR1559651A (en)
GB (1) GB1234266A (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4890647A (en) * 1971-05-14 1973-11-26 Matsushita Electric Ind Co Ltd
JPS4890646A (en) * 1972-03-06 1973-11-26
JPS4890648A (en) * 1972-03-06 1973-11-26
JPS492459A (en) * 1972-04-18 1974-01-10
JPS492458A (en) * 1972-04-18 1974-01-10
JPS492465A (en) * 1972-04-18 1974-01-10
JPS492457A (en) * 1972-04-18 1974-01-10
JPS493546A (en) * 1972-04-21 1974-01-12
JPS493545A (en) * 1972-04-21 1974-01-12
JPS496857A (en) * 1972-05-08 1974-01-22
JPS4917946A (en) * 1972-06-07 1974-02-16
JPS4918241A (en) * 1972-06-08 1974-02-18

Also Published As

Publication number Publication date
DE1806909A1 (en) 1969-06-19
FR1559651A (en) 1969-03-14
BE723818A (en) 1969-05-14

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Legal Events

Date Code Title Description
PS Patent sealed
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee