GB1115524A - Improvements in or relating to electro-acoustic transducers - Google Patents

Improvements in or relating to electro-acoustic transducers

Info

Publication number
GB1115524A
GB1115524A GB25346/65A GB2534665A GB1115524A GB 1115524 A GB1115524 A GB 1115524A GB 25346/65 A GB25346/65 A GB 25346/65A GB 2534665 A GB2534665 A GB 2534665A GB 1115524 A GB1115524 A GB 1115524A
Authority
GB
United Kingdom
Prior art keywords
housing
diaphragm
transducer
transducers
air chamber
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
GB25346/65A
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.)
ELAC Electroacustic GmbH
Original Assignee
ELAC Electroacustic GmbH
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 ELAC Electroacustic GmbH filed Critical ELAC Electroacustic GmbH
Publication of GB1115524A publication Critical patent/GB1115524A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/72—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using ultrasonic, sonic or infrasonic waves
    • 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
    • G10K13/00—Cones, diaphragms, or the like, for emitting or receiving sound in general

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)

Abstract

1,115,524. Subaqueous transducers. ELECTROACUSTIC G.m.b.H. 15 June, 1965 [15 June, 1964], No. 25346/65. Heading H4J. A subaqueous transducer comprises a diaphragm 2 operable in piston-like manner by means of a piezo or magnetostrictive transducer 1, which diaphragm defines with the transducer housing an air chamber 5 and has a surface area substantially equal to that of the housing. A plurality of such transducers can be mounted together by means of e.g. tongues located in adjacent grooves 26 whereby the diaphragms form a virtually continuous sheet. The air chamber acts as a screen for preventing interference from the rear edge of the diaphragm and as a buffer against high pressures surrounding the transducer. The transducer 1 is attached on its lower face to a massive block 13 which is resiliently supported by arms 14 to the casing 15, 14. A compression joint 16 seals the cable gland 18 to the housing 14. A plastics cover 11 completely enshrouds the gland and housing. The diaphragm as shown comprises two portions 2 and 2a of which the latter is resiliently supported by arms 3 to the housing 4. However, the housing, diaphragm and support arms may be an integral structure. Numerous alternatives for the shapes of the diaphragm, air chamber 5 and support arms 3 are discussed with reference to Figs. 3 to 17 (not shown). The shape of the housing i.e. cylindrical, conical, can be altered so as to enable the transducers to be placed close together to provide various shapes of radiating surface i.e. plane, spherical.
GB25346/65A 1964-06-15 1965-06-15 Improvements in or relating to electro-acoustic transducers Expired GB1115524A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEE0027220 1964-06-15

Publications (1)

Publication Number Publication Date
GB1115524A true GB1115524A (en) 1968-05-29

Family

ID=7072595

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25346/65A Expired GB1115524A (en) 1964-06-15 1965-06-15 Improvements in or relating to electro-acoustic transducers

Country Status (3)

Country Link
US (1) US3320578A (en)
DE (1) DE1441496B2 (en)
GB (1) GB1115524A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1249464A (en) * 1967-11-08 1971-10-13 Plessey Co Ltd Improvements in or relating to piezo-electric transducers
US3614201A (en) * 1968-12-02 1971-10-19 Bell Telephone Labor Inc Acoustically absorbent mounting method and apparatus for optical modulator
US4704709A (en) * 1985-07-12 1987-11-03 Westinghouse Electric Corp. Transducer assembly with explosive shock protection
US4839871A (en) * 1988-07-05 1989-06-13 Massey Auldin J Underwater communication device

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1923959A (en) * 1928-06-27 1933-08-22 Submarine Signal Co Means for producing sound
US2131762A (en) * 1935-01-18 1938-10-04 Submarine Signal Co Gasket packing, and the like
US2451968A (en) * 1940-01-03 1948-10-19 Rca Corp Magnetostrictive electroacoustic transducer
US2983901A (en) * 1945-04-16 1961-05-09 Le Roy C Paslay Crystal hydrophone
US2465696A (en) * 1947-10-11 1949-03-29 Marine Instr Company Method and means for surveying geological formations
US2560066A (en) * 1948-11-27 1951-07-10 Raytheon Mfg Co Hydrophone mounting
US3048815A (en) * 1952-11-05 1962-08-07 Edward G Thurston Low frequency transducer
US2978669A (en) * 1954-03-08 1961-04-04 Harris Transducer Corp Underwater electrodynamic acoustic transducer with air-filled composite diaphragm
US2961637A (en) * 1955-06-24 1960-11-22 Bendix Corp Underwater transducer having a longitudinally vibratile element
US3068446A (en) * 1958-08-21 1962-12-11 Stanley L Ehrlich Tubular electrostrictive transducer with spaced electrodes and loading masses

Also Published As

Publication number Publication date
US3320578A (en) 1967-05-16
DE1441496A1 (en) 1968-12-19
DE1441496B2 (en) 1970-06-11

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