FR2179190B1 - - Google Patents

Info

Publication number
FR2179190B1
FR2179190B1 FR7312351A FR7312351A FR2179190B1 FR 2179190 B1 FR2179190 B1 FR 2179190B1 FR 7312351 A FR7312351 A FR 7312351A FR 7312351 A FR7312351 A FR 7312351A FR 2179190 B1 FR2179190 B1 FR 2179190B1
Authority
FR
France
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
FR7312351A
Other languages
French (fr)
Other versions
FR2179190A1 (pt
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.)
Mitsumi Electric Co Ltd
Original Assignee
Mitsumi Electric 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
Application filed by Mitsumi Electric Co Ltd filed Critical Mitsumi Electric Co Ltd
Publication of FR2179190A1 publication Critical patent/FR2179190A1/fr
Application granted granted Critical
Publication of FR2179190B1 publication Critical patent/FR2179190B1/fr
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)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
FR7312351A 1972-04-06 1973-04-05 Expired FR2179190B1 (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP47033910A JPS48102948A (pt) 1972-04-06 1972-04-06

Publications (2)

Publication Number Publication Date
FR2179190A1 FR2179190A1 (pt) 1973-11-16
FR2179190B1 true FR2179190B1 (pt) 1978-01-06

Family

ID=12399656

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7312351A Expired FR2179190B1 (pt) 1972-04-06 1973-04-05

Country Status (8)

Country Link
US (1) US3832655A (pt)
JP (1) JPS48102948A (pt)
BE (1) BE797913A (pt)
BR (1) BR7302502D0 (pt)
FR (1) FR2179190B1 (pt)
GB (1) GB1428264A (pt)
IT (1) IT982724B (pt)
NL (1) NL7304705A (pt)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2239812B1 (pt) * 1973-07-30 1976-06-18 Lignes Telegraph Telephon
US4467295A (en) * 1981-11-25 1984-08-21 Showa Electric Wire & Cable Co., Ltd. Solid ultrasonic delay line
US4475054A (en) * 1983-10-17 1984-10-02 Joseph Baumoel Metal transducer housing with focusing surface
US6310426B1 (en) * 1999-07-14 2001-10-30 Halliburton Energy Services, Inc. High resolution focused ultrasonic transducer, for LWD method of making and using same
US8865003B2 (en) * 2008-09-26 2014-10-21 Abbott Laboratories Apparatus and method for separation of particles suspended in a liquid from the liquid in which they are suspended

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2823355A (en) * 1950-05-17 1958-02-11 David L Arenberg Ultrasonic delay line
GB1069971A (en) * 1963-07-19 1967-05-24 Mullard Ltd Improvements in or relating to acoustic delay lines
US3317862A (en) * 1964-09-11 1967-05-02 Bell Telephone Labor Inc Off-axis elastic wave delay device with spherical reflections
FR1513518A (fr) * 1967-01-04 1968-02-16 Quartz & Silice Ligne à retard pour ultrasons permettant d'obtenir plusieurs retards prédéterminés
US3582834A (en) * 1968-04-10 1971-06-01 Westinghouse Electric Corp Microwave ultrasonic delay line

Also Published As

Publication number Publication date
FR2179190A1 (pt) 1973-11-16
BR7302502D0 (pt) 1974-02-19
US3832655A (en) 1974-08-27
DE2317154A1 (de) 1973-10-25
IT982724B (it) 1974-10-21
DE2317154B2 (de) 1976-11-18
GB1428264A (en) 1976-03-17
BE797913A (fr) 1973-07-31
NL7304705A (pt) 1973-10-09
JPS48102948A (pt) 1973-12-24

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Legal Events

Date Code Title Description
ST Notification of lapse