GB1281945A - Underwater electro-acoustic transducer - Google Patents

Underwater electro-acoustic transducer

Info

Publication number
GB1281945A
GB1281945A GB50687/69A GB5068769A GB1281945A GB 1281945 A GB1281945 A GB 1281945A GB 50687/69 A GB50687/69 A GB 50687/69A GB 5068769 A GB5068769 A GB 5068769A GB 1281945 A GB1281945 A GB 1281945A
Authority
GB
United Kingdom
Prior art keywords
beams
transducer
welded
stainless steel
cover plate
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
GB50687/69A
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.)
KBR Wyle Services LLC
Original Assignee
Wyle Laboratories Inc
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 Wyle Laboratories Inc filed Critical Wyle Laboratories Inc
Publication of GB1281945A publication Critical patent/GB1281945A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
    • B06B1/06—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction
    • B06B1/0607—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements
    • B06B1/0622—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy operating with piezoelectric effect or with electrostriction using multiple elements on one surface
    • B06B1/0633—Cylindrical array
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H04R17/04—Gramophone pick-ups using a stylus; Recorders using a stylus
    • H04R17/08—Gramophone pick-ups using a stylus; Recorders using a stylus signals being recorded or played back by vibration of a stylus in two orthogonal directions simultaneously

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Abstract

1281945 Subaqueous transducers WYLE LABORATORIES 15 Oct 1969 [15 Oct 1968] 50687/69 Heading H4J An underwater electro-acoustic transducer Figs. 1, 2, has a plurality of I-sectioned beams 10 fitted together. The radiating surface of the transducer, preferably cylindrical, is formed of a plurality of adjacent sections of the beams 10. Each beam 10 has a web portion extending transversely to the surface part. Electrostrictive elements 12, e.g. of lead zirconate, are fixed on both sides of the web portion, preferably in notches. Bus-bars 20 are positioned between and in electrical contact with the elements 12 and, are co-extensive with the beams 10. They connect to a strap 22 connected to a plug 31. The beams 10 are connected to a cover plate by compliant stainless steel straps 24 to a cover plate 26 connected to a strap 28. Straps 24 permit radial movement of the beam cylinder. A stainless steel tube 40 is welded to a bottom plate 42 and a flange 44 is welded to the top of tube 40. The top cover plate 26 is sealed with an 0-ring 48 to the flange 26. The centre of the tube 40 is open to water to reduce buoyancy. A swivel bolt assembly 52 is provided. The assembly may be flushed with notrogen through a gas inlet and exhaust valve 54. A cylindrical rubber outer diaphragm 60 is secured by compression bands 62, 64 and provides an impedance match to water. It is protected by a stainless steel grid 66. Legs 70 are welded to the bottom plate 42. In other embodiments (not shown) the transducer has equilateral spherical triangular surfaces which form the sides of a regular polyhedron. Alternatively the transducers may have the shape of "spherical square" or regular "spherical pentagons". The transducer may be used in sonar applications, for communication using voice fre] quency transmission and in the reception of acoustic signals as a hydrophone.
GB50687/69A 1968-10-15 1969-10-15 Underwater electro-acoustic transducer Expired GB1281945A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US76763768A 1968-10-15 1968-10-15

Publications (1)

Publication Number Publication Date
GB1281945A true GB1281945A (en) 1972-07-19

Family

ID=25080102

Family Applications (1)

Application Number Title Priority Date Filing Date
GB50687/69A Expired GB1281945A (en) 1968-10-15 1969-10-15 Underwater electro-acoustic transducer

Country Status (5)

Country Link
US (1) US3500304A (en)
JP (1) JPS5018774B1 (en)
DE (1) DE1951999A1 (en)
FR (1) FR2020725A1 (en)
GB (1) GB1281945A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2708396A1 (en) * 1976-02-27 1977-09-08 France Etat SWITCH ANTENNA

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3953828A (en) * 1968-11-08 1976-04-27 The United States Of America As Represented By The Secretary Of The Navy High power-wide frequency band electroacoustic transducer
JPS5242468U (en) * 1975-09-22 1977-03-25
US4380808A (en) * 1981-02-06 1983-04-19 Canadian Patents & Development Limited Thinned array transducer for sonar
US4432080A (en) * 1981-10-01 1984-02-14 The United States Of America As Represented By The Secretary Of The Navy Subwavelength monopole underwater sound radiator
WO1987006408A1 (en) * 1986-04-07 1987-10-22 Edo Corporation Compressed sonar array with interleaved staves
JP6396392B2 (en) 2016-11-02 2018-09-26 ファナック株式会社 Setting device and setting system for setting a plurality of devices

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2803808A (en) * 1957-08-20 wallace
US2723386A (en) * 1954-05-05 1955-11-08 Bendix Aviat Corp Sonic transducer with mechanical motion transformer
US2964837A (en) * 1958-06-09 1960-12-20 Harris Transducer Corp Method of transducer manufacture
US3043967A (en) * 1960-01-13 1962-07-10 Walter L Clearwaters Electrostrictive transducer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2708396A1 (en) * 1976-02-27 1977-09-08 France Etat SWITCH ANTENNA

Also Published As

Publication number Publication date
FR2020725A1 (en) 1970-07-17
DE1951999A1 (en) 1970-04-16
JPS5018774B1 (en) 1975-07-02
US3500304A (en) 1970-03-10

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PLNP Patent lapsed through nonpayment of renewal fees