GB878087A - Electroacoustical apparatus - Google Patents

Electroacoustical apparatus

Info

Publication number
GB878087A
GB878087A GB29084/58A GB2908458A GB878087A GB 878087 A GB878087 A GB 878087A GB 29084/58 A GB29084/58 A GB 29084/58A GB 2908458 A GB2908458 A GB 2908458A GB 878087 A GB878087 A GB 878087A
Authority
GB
United Kingdom
Prior art keywords
transducer
radiator
shell
electrodes
sealed
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
GB29084/58A
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.)
Raytheon Co
Original Assignee
Raytheon Co
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 Raytheon Co filed Critical Raytheon Co
Publication of GB878087A publication Critical patent/GB878087A/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
    • B06B1/0603—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 a piezoelectric bender, e.g. bimorph

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transducers For Ultrasonic Waves (AREA)

Abstract

878,087. Sound receiving and transmitting devices. RAYTHEON CO. Sept. 10, 1958 [Dec. 9, 1957], No. 29084/58. Class 40 (4). A piezo-electric bender transducer is directly secured by an edge to an acoustical radiator. In one embodiment, Fig. 1, suitable for immersion in water, the radiator comprises a hemispherical steel shell 21 which is closed by a flanged cover plate 22 and sealed by a ring 25, the shell enclosing a circular bender transducer 11 which is made up of barium titanate plates 14, 15 and electrodes 17, 18. The transducer is secured by cement at its edge to the inner surface of the shell, and electrical connection to the electrodes is effected by a coaxial cable 31 which passes through a gland 32 and a plastic cover 35. Suitable dimensions for the various components are specified, and the inertia driving effect of the vibrating transducer in terms of the relative masses of radiator and transducer are discussed. An alternative embodiment, Figs. 2 and 3, comprises a cylindrical aluminium body 41 having a rectangular hollow region 51 extending therethrough, the sides of the hollow being formed with axially extending grooves 52, 53 into which the edges of rectangular piezo-electric plates 55, 56 are fitted. A number of axially spaced transducer elements may be provided in the body as shown in Fig. 2, and the arrangement is sealed by caps 43, 44 and rings 46, 47. A modified arrangement is also disclosed, Fig. 5, in which a cylindrical body 88 is formed with a square cross-section internal opening 89 accommodating a stack of spaced transducer elements 92 in slots 91. Apertures 90 are also formed in the body for circulating air for cooling purposes.
GB29084/58A 1957-12-09 1958-09-10 Electroacoustical apparatus Expired GB878087A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US878087XA 1957-12-09 1957-12-09

Publications (1)

Publication Number Publication Date
GB878087A true GB878087A (en) 1961-09-27

Family

ID=22207379

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29084/58A Expired GB878087A (en) 1957-12-09 1958-09-10 Electroacoustical apparatus

Country Status (2)

Country Link
DE (1) DE1181592B (en)
GB (1) GB878087A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3683129A (en) * 1968-09-30 1972-08-08 Philips Corp Electroacoustic transducer having a diaphragm made of at least one layer of piezoelectric material
GB2130844A (en) * 1982-11-19 1984-06-06 Thomson Csf Velocity hydrophone
GB2156521A (en) * 1984-03-27 1985-10-09 Nat Res Dev Finding the direction of a sound
US4837751A (en) * 1981-12-22 1989-06-06 Shell Oil Company Shielded hydrophone assembly
GB2276513A (en) * 1993-03-25 1994-09-28 Charles William Turner Ultrasonic transducer

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE599361C (en) * 1932-12-24 1934-09-24 Atlas Werke Akt Ges Device for receiving sound in the water
DE899770C (en) * 1937-05-28 1953-12-17 Atlas Werke Ag Piezoelectric flexural oscillator
US2488586A (en) * 1945-09-05 1949-11-22 Hartford Nat Bank & Trust Co Piezoelectrical apparatus

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3683129A (en) * 1968-09-30 1972-08-08 Philips Corp Electroacoustic transducer having a diaphragm made of at least one layer of piezoelectric material
US4837751A (en) * 1981-12-22 1989-06-06 Shell Oil Company Shielded hydrophone assembly
GB2130844A (en) * 1982-11-19 1984-06-06 Thomson Csf Velocity hydrophone
GB2156521A (en) * 1984-03-27 1985-10-09 Nat Res Dev Finding the direction of a sound
GB2276513A (en) * 1993-03-25 1994-09-28 Charles William Turner Ultrasonic transducer
GB2276513B (en) * 1993-03-25 1996-11-13 Charles William Turner Transducer for airborne ultrasound

Also Published As

Publication number Publication date
DE1181592B (en) 1964-11-12

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