GB423205A - Improvements in underwater compressional wave senders or receivers - Google Patents

Improvements in underwater compressional wave senders or receivers

Info

Publication number
GB423205A
GB423205A GB28269/33A GB2826933A GB423205A GB 423205 A GB423205 A GB 423205A GB 28269/33 A GB28269/33 A GB 28269/33A GB 2826933 A GB2826933 A GB 2826933A GB 423205 A GB423205 A GB 423205A
Authority
GB
United Kingdom
Prior art keywords
crystal
rubber
housing
diaphragms
crystals
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
GB28269/33A
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.)
Atlas Werke AG
Original Assignee
Atlas Werke AG
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 Atlas Werke AG filed Critical Atlas Werke AG
Publication of GB423205A publication Critical patent/GB423205A/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
    • B06B1/0644—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 single piezoelectric element
    • B06B1/0662—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 single piezoelectric element with an electrode on the sensitive surface
    • B06B1/0677—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 single piezoelectric element with an electrode on the sensitive surface and a high impedance backing

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

423,205. Sound receiving and transmitting devices. ATLAS WERKE AKT.- GES., 16, Stephanikirchenweide, Bremen, Germany. Oct. 12, 1933, Nos. 28269 and 28270. Convention dates, Dec. 24, 1932 and April 6, 1933. [Class 40 (iv)] [See also Group XL] A subaqueous compressional wave sender or receiver comprises one or more Rochelle Salt piezo-electric crystals enclosed in a watertight housing, means for transferring vibrations between the crystal or crystals and the water medium including a rubber or like membrane in contact with the water medium, and means for conducting electrical energy to and from the crystal or crystals. Fig. 1 shows one form of construction in which a crystal 5 carrying electrodes 6, 7 is mounted between a pair of piston diaphragms 2, 3, the former being formed as part of the housing 1 whilst the latter is formed as part of the cover 4. The inner surfaces of the diaphragms are separated from the crystal by insulating layers 10 and the areas of the diaphragms are made large compared with the areas of the active surfaces of the crystal. If desired, a single diaphragm only may be used, the other surface of the crystal being fixed to a rigid back plate. Fig. 3 shows a modification in which the crystal is mounted between two semi-cylindrical radiating members 11 held together by a rubber shell 12 clamped by rings 17, 18 to metal plates 13, 14. The members 11 are preferably separated by a small air space which, if desired, may be filled with rubber. According to a further modification, Fig. 5, a crystal 5 has one surface rigidly held against the back wall of a casing 1 whilst its other surface projects slightly through an opening in the housing and is covered by a rubber diaphragm 19 clamped to the housing by a ring 20. Leaf spring electrodes 6, 7 fastened to the housing by means of insulating members 21 press lightly against the crystal. If desired, the crystal may be mounted between two rubber diaphragms. In all the arrangements described more than one crystal may be provided covered by a common diaphragm. When the receiver is connected to an observation point through long cables, an amplifying valve is preferably mounted in the immediate vicinity of the receiver to avoid the detrimental capacity of the cable. A device is also described adapted to be towed by a moving vessel and comprising a plurality of receivers arranged in a straight line at equal distances apart, within a common rubber housing. The Specification as open to inspection under Sect. 91 states that the rubber shell 12, Fig. 3, may be omitted. This subjectmatter does not appear in the Specification as accepted.
GB28269/33A 1932-12-24 1933-10-12 Improvements in underwater compressional wave senders or receivers Expired GB423205A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE423205X 1932-12-24

Publications (1)

Publication Number Publication Date
GB423205A true GB423205A (en) 1935-01-28

Family

ID=6468761

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28269/33A Expired GB423205A (en) 1932-12-24 1933-10-12 Improvements in underwater compressional wave senders or receivers

Country Status (3)

Country Link
US (1) US2138036A (en)
FR (1) FR761783A (en)
GB (1) GB423205A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2118757A (en) * 1982-01-21 1983-11-02 Ashworth Jones Alun David Audio transducer

Families Citing this family (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2712124A (en) * 1955-06-28 ording
US2427348A (en) * 1941-08-19 1947-09-16 Bell Telephone Labor Inc Piezoelectric vibrator
US2435595A (en) * 1942-02-19 1948-02-10 Bell Telephone Labor Inc High-power compressional wave radiator
US2433383A (en) * 1942-06-24 1947-12-30 Bell Telephone Labor Inc Crystal microphone
US2452068A (en) * 1943-01-23 1948-10-26 Submarine Signal Co Sound pickup device
US2425594A (en) * 1943-03-04 1947-08-12 Western Electric Co Submarine signal microphone
US2420864A (en) * 1943-04-17 1947-05-20 Chilowsky Constantin Piezoelectric plastic material and method of making same
US2694868A (en) * 1943-08-03 1954-11-23 Edwin M Mcmillan Echo repeater
US2838850A (en) * 1943-09-15 1958-06-17 Edward B Stephenson Virtual target for echo ranging apparatus
US2436377A (en) * 1943-12-27 1948-02-24 Bell Telephone Labor Inc Ultrasonic compressional wave transmission
US2529658A (en) * 1944-01-31 1950-11-14 Brush Dev Co Transducer and system
US2427062A (en) * 1944-06-02 1947-09-09 Brush Dev Co Vibrational energy transmitter or receiver
US2538114A (en) * 1944-10-17 1951-01-16 Bell Telephone Labor Inc Thickness measurement
US2451966A (en) * 1944-11-18 1948-10-19 Brush Dev Co Transducer
US2472714A (en) * 1945-04-16 1949-06-07 Massa Frank Piezoelectric sound pressure microphone
US2482451A (en) * 1945-06-07 1949-09-20 Reeves Hoffman Corp Piezoelectric crystal holder
US2710458A (en) * 1945-06-14 1955-06-14 Donald G Reed Underwater acoustic decoy
US2448365A (en) * 1945-07-27 1948-08-31 Bell Telephone Labor Inc Projector and receiver of supersonic frequencies
US2605346A (en) * 1945-09-18 1952-07-29 Roland M Goglick Waterproof microphone
US2521642A (en) * 1945-11-29 1950-09-05 Brush Dev Co Transducer means
US2546313A (en) * 1946-12-26 1951-03-27 Brush Dev Co Testing instrument for acoustic devices
US2589135A (en) * 1947-04-25 1952-03-11 Bell Telephone Labor Inc Submarine signaling device
US2650991A (en) * 1947-11-14 1953-09-01 Bell Telephone Labor Inc Accelerometer
US2486146A (en) * 1948-10-01 1949-10-25 Cambridge Thermionic Corp Pressure responsive transducer
US2613261A (en) * 1948-12-08 1952-10-07 Massa Frank Underwater transducer
US2723357A (en) * 1953-01-06 1955-11-08 Sperry Prod Inc Search units for ultrasonic inspection systems
US2860265A (en) * 1954-06-21 1958-11-11 Bell Telephone Labor Inc Ferroelectric device
US2851541A (en) * 1954-07-28 1958-09-09 Electro Voice Electromechanical transducer
US2962695A (en) * 1955-05-13 1960-11-29 Harris Transducer Corp Resonant low-frequency transducer
US3030527A (en) * 1955-08-08 1962-04-17 Stewart Warner Corp Piezo-electric power source assembly
US3215977A (en) * 1960-07-27 1965-11-02 Clevite Corp Acoustic transducer
US4433399A (en) * 1979-07-05 1984-02-21 The Stoneleigh Trust Ultrasonic transducers
DE59303655D1 (en) * 1993-02-04 1996-10-10 Landis & Gyr Tech Innovat Transducer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2118757A (en) * 1982-01-21 1983-11-02 Ashworth Jones Alun David Audio transducer

Also Published As

Publication number Publication date
FR761783A (en) 1934-03-27
US2138036A (en) 1938-11-29

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