GB1382703A - Delay lines - Google Patents

Delay lines

Info

Publication number
GB1382703A
GB1382703A GB2273372A GB2273372A GB1382703A GB 1382703 A GB1382703 A GB 1382703A GB 2273372 A GB2273372 A GB 2273372A GB 2273372 A GB2273372 A GB 2273372A GB 1382703 A GB1382703 A GB 1382703A
Authority
GB
United Kingdom
Prior art keywords
delay lines
transducers
ultrasonic delay
holes
glass
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
GB2273372A
Inventor
Yukio Kasahara
Takashi Iguchi
Masanari Mikoda
Isao Ueno
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 JP3284971A external-priority patent/JPS5211549B1/ja
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of GB1382703A publication Critical patent/GB1382703A/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)
  • Compositions Of Oxide Ceramics (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)

Abstract

1382703 Ultrasonic delay lines MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 15 May 1972 [14 May 1971] 22733/72 Heading H3U Unwanted propagation in an ultrasonic delay line, comprising a body 11 of lead silicate glass, is reduced by polygonal holes 29, 30 adjacent to the path 23-28 of a beam between two transducers 19, 20. The holes may be rectangular, cruciform or star-shaped and may be provided on their walla with energy-absorbent material such as rubber, wax, cement, resin or glass. The transducers 19, 20 are polarized as indicated by arrows 21, 22 respectively. Dimensions and the composition of the body 11 are given. Reference has been directed by the Comptroller to Specification 1,209,760.
GB2273372A 1971-05-14 1972-05-15 Delay lines Expired GB1382703A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP3284971A JPS5211549B1 (en) 1971-05-14 1971-05-14
JP47023371A JPS4890647A (en) 1971-05-14 1972-03-06

Publications (1)

Publication Number Publication Date
GB1382703A true GB1382703A (en) 1975-02-05

Family

ID=26360725

Family Applications (2)

Application Number Title Priority Date Filing Date
GB2273372A Expired GB1382703A (en) 1971-05-14 1972-05-15 Delay lines
GB460873A Expired GB1409766A (en) 1971-05-14 1973-01-30 Ultrasonic delay line

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB460873A Expired GB1409766A (en) 1971-05-14 1973-01-30 Ultrasonic delay line

Country Status (8)

Country Link
US (1) US3798577A (en)
JP (1) JPS4890647A (en)
AU (2) AU444943B2 (en)
CA (2) CA958085A (en)
DE (2) DE2223400B2 (en)
FR (2) FR2139419A5 (en)
GB (2) GB1382703A (en)
NL (2) NL7206138A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3873946A (en) * 1973-10-04 1975-03-25 Hughes Aircraft Co Acoustic surface wave tapped delay line
JPS5710516A (en) * 1980-06-23 1982-01-20 Matsushita Electric Ind Co Ltd Comb type filter
JPS61244112A (en) * 1985-04-23 1986-10-30 Asahi Glass Co Ltd Ultrasonic delay line
US5173667A (en) * 1991-02-19 1992-12-22 Ford Motor Company Acoustic wave transmission media delay line having internally disposed absorber channels

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2859415A (en) * 1952-09-03 1958-11-04 Bell Telephone Labor Inc Ultrasonic acoustic wave transmission delay lines
US2839731A (en) * 1953-01-14 1958-06-17 Bell Telephone Labor Inc Multi-facet ultrasonic delay line
GB748438A (en) * 1953-11-30 1956-05-02 Marconi Wireless Telegraph Co Improvements in or relating to ultrasonic delay devices
US3131459A (en) * 1959-11-09 1964-05-05 Corning Glass Works Method of bonding absorbing material to a delay line
US3247473A (en) * 1959-11-09 1966-04-19 Corning Glass Works Cold diffusion bond between acoustic delay line and back electrode or acoustic absorber
NL295653A (en) * 1962-08-15
FR1559651A (en) * 1967-11-15 1969-03-14
GB1171261A (en) * 1968-02-16 1969-11-19 Mullard Ltd Improved Ultra-Sonic Delay Line
JPS5145217B1 (en) * 1969-12-06 1976-12-02

Also Published As

Publication number Publication date
GB1409766A (en) 1975-10-15
CA954597A (en) 1974-09-10
DE2240406A1 (en) 1973-09-20
AU4201672A (en) 1973-11-15
FR2139419A5 (en) 1973-01-05
DE2223400A1 (en) 1973-01-18
DE2240406B2 (en) 1975-02-20
DE2223400C3 (en) 1975-04-30
JPS4890647A (en) 1973-11-26
FR2175379A5 (en) 1973-10-19
NL7206138A (en) 1972-11-16
NL7210669A (en) 1973-09-10
AU4757172A (en) 1974-05-23
US3798577A (en) 1974-03-19
DE2223400B2 (en) 1974-09-26
CA958085A (en) 1974-11-19
AU450723B2 (en) 1974-07-18
AU444943B2 (en) 1974-02-07

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
49R Reference inserted (sect. 9/1949)
PE20 Patent expired after termination of 20 years