GB684486A - Improvements in or relating to electromechanical transducers - Google Patents

Improvements in or relating to electromechanical transducers

Info

Publication number
GB684486A
GB684486A GB2144249A GB2144249A GB684486A GB 684486 A GB684486 A GB 684486A GB 2144249 A GB2144249 A GB 2144249A GB 2144249 A GB2144249 A GB 2144249A GB 684486 A GB684486 A GB 684486A
Authority
GB
United Kingdom
Prior art keywords
space
supersonic
sheath
relating
electromechanical transducers
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
GB2144249A
Inventor
Geoffrey Bradfield
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.)
National Research Development Corp UK
Original Assignee
National Research Development Corp UK
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 National Research Development Corp UK filed Critical National Research Development Corp UK
Priority to GB2144249A priority Critical patent/GB684486A/en
Publication of GB684486A publication Critical patent/GB684486A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/02—Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
    • G01H11/02—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by magnetic means, e.g. reluctance
    • G01H11/04—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by magnetic means, e.g. reluctance using magnetostrictive devices

Abstract

684,486. Supersonic transducers. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Sept. 14, 1950 [Aug. 17, 1949], No. 21442/49. Class 40 (iv). A supersonic magnetostrictive transmitter, especially for use in liquidfilled bore-holes, comprises a number of annular nickel discs 2 arranged in the form of a hollow cylinder 1, the length of which is large compared with the wavelength in water of the frequency used. The assemblage 1 is impregnated with thermo-setting resin and carries a toroidal electric winding 3 energized by an oscillator. The device is protected by a metal sheath 4 and is carried by sealing supports 6, 7 on a tube 5. The space 9 contains air and the space 8 contains a coupling medium which can wet or bond both the transducer and the sheath. Dimensions for optimum efficiency and strength are given within the limits imposed by the size of the apparatus.
GB2144249A 1949-08-17 1949-08-17 Improvements in or relating to electromechanical transducers Expired GB684486A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2144249A GB684486A (en) 1949-08-17 1949-08-17 Improvements in or relating to electromechanical transducers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2144249A GB684486A (en) 1949-08-17 1949-08-17 Improvements in or relating to electromechanical transducers

Publications (1)

Publication Number Publication Date
GB684486A true GB684486A (en) 1952-12-17

Family

ID=10163021

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2144249A Expired GB684486A (en) 1949-08-17 1949-08-17 Improvements in or relating to electromechanical transducers

Country Status (1)

Country Link
GB (1) GB684486A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3406302A (en) * 1966-03-15 1968-10-15 Westinghouse Electric Corp Cylindrical magnetostrictive electromechanical transducer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3406302A (en) * 1966-03-15 1968-10-15 Westinghouse Electric Corp Cylindrical magnetostrictive electromechanical transducer

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