FR857272A - Perfectionnements aux appareils, notamment aux microphones à magnétostriction - Google Patents

Perfectionnements aux appareils, notamment aux microphones à magnétostriction

Info

Publication number
FR857272A
FR857272A FR857272DA FR857272A FR 857272 A FR857272 A FR 857272A FR 857272D A FR857272D A FR 857272DA FR 857272 A FR857272 A FR 857272A
Authority
FR
France
Prior art keywords
magnetostriction
microphones
devices
magnetostriction microphones
especially magnetostriction
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
Other languages
English (en)
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.)
Thales SA
Original Assignee
CSF Compagnie Generale de Telegraphie sans Fil SA
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 CSF Compagnie Generale de Telegraphie sans Fil SA filed Critical CSF Compagnie Generale de Telegraphie sans Fil SA
Application granted granted Critical
Publication of FR857272A publication Critical patent/FR857272A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R15/00—Magnetostrictive transducers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
FR857272D 1939-03-22 1939-03-22 Perfectionnements aux appareils, notamment aux microphones à magnétostriction Expired FR857272A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR857272T 1939-03-22

Publications (1)

Publication Number Publication Date
FR857272A true FR857272A (fr) 1940-09-03

Family

ID=9329339

Family Applications (1)

Application Number Title Priority Date Filing Date
FR857272D Expired FR857272A (fr) 1939-03-22 1939-03-22 Perfectionnements aux appareils, notamment aux microphones à magnétostriction

Country Status (3)

Country Link
US (1) US2328496A (fr)
FR (1) FR857272A (fr)
GB (1) GB534599A (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2984819A (en) * 1944-07-14 1961-05-16 Laymon N Miller Magnetostrictive transducer
US2468270A (en) * 1944-12-30 1949-04-26 Rca Corp Magnetostrictive transducer
NL72352C (fr) * 1947-11-12
US2549578A (en) * 1947-12-30 1951-04-17 Hazeltine Research Inc Magnetostrictive converter time delay device
US2879496A (en) * 1948-09-30 1959-03-24 Research Corp Plastic cast ring stack transducer
US2638567A (en) * 1950-05-05 1953-05-12 Eugene J Cronin Magnetostriction apparatus
US2705460A (en) * 1951-01-26 1955-04-05 Harl C Burdick Ultrasonic attachment for oil pumps
US2846654A (en) * 1952-06-25 1958-08-05 Burroughs Corp Magnetostrictive delay line
US2858108A (en) * 1953-04-22 1958-10-28 Drilling Res Inc Well drilling system
US2922999A (en) * 1956-04-17 1960-01-26 Alcar Instr Inc Nuisance control technique and apparatus therefor
US3019660A (en) * 1956-04-26 1962-02-06 Gulton Ind Inc Ultrasonic transducer
US3235836A (en) * 1958-06-23 1966-02-15 Motorola Inc Sonic transmitter
US3070790A (en) * 1959-12-30 1962-12-25 Wilfred Roth Acoustic transducers
DE1158588B (de) * 1960-05-14 1963-12-05 Telefunken Patent Elektrostriktiver Torsionsschwinger
US3315663A (en) * 1964-04-02 1967-04-25 Goldfarb Herman Bronchoscope having means for producing mechanical vibrations in the bronchial tract
US3274540A (en) * 1964-12-30 1966-09-20 Leonard J Melhart High energy sonic and ultra-sonic magnetostriction transducer
US8836179B2 (en) * 2011-03-10 2014-09-16 Halliburton Energy Services, Inc. Systems and methods of energy harvesting with positive displacement motor

Also Published As

Publication number Publication date
GB534599A (en) 1941-03-11
US2328496A (en) 1943-08-31

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