GB889835A - Improvements in or relating to sonic or ultrasonic transducers - Google Patents

Improvements in or relating to sonic or ultrasonic transducers

Info

Publication number
GB889835A
GB889835A GB39500/58A GB3950058A GB889835A GB 889835 A GB889835 A GB 889835A GB 39500/58 A GB39500/58 A GB 39500/58A GB 3950058 A GB3950058 A GB 3950058A GB 889835 A GB889835 A GB 889835A
Authority
GB
United Kingdom
Prior art keywords
face
toroid
head
dec
amplifier
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
GB39500/58A
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.)
Bendix Corp
Original Assignee
Bendix 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 Bendix Corp filed Critical Bendix Corp
Publication of GB889835A publication Critical patent/GB889835A/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
    • G10K11/002—Devices for damping, suppressing, obstructing or conducting sound in acoustic devices

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

889,835. Acoustic couplings. BENDIX CORPORATION. Dec. 8, 1958 [Dec. 30, 1957], No. 39500/58. Class 40(8). In order to prevent radiation from the liquidimmersed non - working surface of an electroacoustic transducer, the acoustic coupling between the face and the liquid is reduced by means of pressure-release means situated near the face. The transducer shown comprises a magnetostrictive driver 10a coupled to a radiating head 16 by means of a cylindrical motion-amplifier 10b of the type described in Specification 868,982. The amplifier and the head are immersed in liquid held within a tank 12. Radiation from the annular back face 17 of the head is prevented by a gas-filled toroid 18 of rubber or plastic material which is held in position near the face 17 either by its own buoyancy or by a framework 21. The toroid does not contact the whole surface of the face but is everywhere within one quarter-wavelength of the face. In a modification (Fig. 4, not shown), an axially elongated toroid which extends from the face 17 to flange 14 is used. A solid toroid made of impervious cellular material, e.g. sponge rubber, may be used.
GB39500/58A 1957-12-30 1958-12-08 Improvements in or relating to sonic or ultrasonic transducers Expired GB889835A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US889835XA 1957-12-30 1957-12-30

Publications (1)

Publication Number Publication Date
GB889835A true GB889835A (en) 1962-02-21

Family

ID=22214656

Family Applications (1)

Application Number Title Priority Date Filing Date
GB39500/58A Expired GB889835A (en) 1957-12-30 1958-12-08 Improvements in or relating to sonic or ultrasonic transducers

Country Status (1)

Country Link
GB (1) GB889835A (en)

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