GB1249021A - An ultrasonic wave delay line comprising a block of glass - Google Patents

An ultrasonic wave delay line comprising a block of glass

Info

Publication number
GB1249021A
GB1249021A GB06335/69A GB1633569A GB1249021A GB 1249021 A GB1249021 A GB 1249021A GB 06335/69 A GB06335/69 A GB 06335/69A GB 1633569 A GB1633569 A GB 1633569A GB 1249021 A GB1249021 A GB 1249021A
Authority
GB
United Kingdom
Prior art keywords
glass
delay line
block
ultrasonic wave
wave delay
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
GB06335/69A
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Publication of GB1249021A publication Critical patent/GB1249021A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/102—Glass compositions containing silica with 40% to 90% silica, by weight containing lead
    • C03C3/105—Glass compositions containing silica with 40% to 90% silica, by weight containing lead containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C3/00—Glass compositions
    • C03C3/04—Glass compositions containing silica
    • C03C3/076—Glass compositions containing silica with 40% to 90% silica, by weight
    • C03C3/102—Glass compositions containing silica with 40% to 90% silica, by weight containing lead
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C4/00—Compositions for glass with special properties
    • C03C4/0057—Compositions for glass with special properties for ultrasonic delay lines glass
    • 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

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Glass Compositions (AREA)

Abstract

1,249,021. Glass for ultrasonic delay line. NIPPON TELEGRAPH & TELEPHONE PUBLIC CORP. 28 March, 1969 [5 April, 1968], No. 16335/69. Heading C1M. [Also in Division H3] A glass for an ultrasonic delay line consists of (in weight per cent):- SiO 2 .. .. .. 57 - 78 PbO .. .. .. . 8 - 19 Al 2 O 3 .. .. .. 0À5- 9 Na 2 O .. .. .. 0 - 11 K 2 O .. .. .. 0 - 20 (Na 2 O+K 2 O) .. .. 9 - 20 Compatible metal oxides or fluorides .. .. 0 - 10 The compatible metal oxide may be As 2 O 3 and/or Sb 2 O 3 . Preferably the glass has a temperature coefficient of delay time less than 1À5 x 10<SP>-6/</SP>‹C., and an attenuation factor of less than 10 x 10<SP>-3</SP> dB. per cycle over 1 MHz.
GB06335/69A 1968-04-05 1969-03-28 An ultrasonic wave delay line comprising a block of glass Expired GB1249021A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2212668 1968-04-05

Publications (1)

Publication Number Publication Date
GB1249021A true GB1249021A (en) 1971-10-06

Family

ID=12074174

Family Applications (1)

Application Number Title Priority Date Filing Date
GB06335/69A Expired GB1249021A (en) 1968-04-05 1969-03-28 An ultrasonic wave delay line comprising a block of glass

Country Status (3)

Country Link
US (1) US3769613A (en)
FR (1) FR2005676A1 (en)
GB (1) GB1249021A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6709718A (en) * 1967-07-13 1969-01-15
FR2068888A5 (en) * 1969-08-15 1971-09-03 Nippon Telegraph & Telephone
NL7018029A (en) * 1969-12-22 1971-06-24

Also Published As

Publication number Publication date
FR2005676A1 (en) 1969-12-12
DE1916658A1 (en) 1969-10-30
US3769613A (en) 1973-10-30
DE1916658B2 (en) 1972-09-28

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