GB1006726A - Improvements in or relating to piezo-electric transducers - Google Patents

Improvements in or relating to piezo-electric transducers

Info

Publication number
GB1006726A
GB1006726A GB4505262A GB4505262A GB1006726A GB 1006726 A GB1006726 A GB 1006726A GB 4505262 A GB4505262 A GB 4505262A GB 4505262 A GB4505262 A GB 4505262A GB 1006726 A GB1006726 A GB 1006726A
Authority
GB
United Kingdom
Prior art keywords
ring
strip
diaphragm
centre
disc
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
GB4505262A
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.)
Brown Ltd S G
VICTOR HUBERT ALEXANDER DIEDER
SG Brown Ltd
Original Assignee
Brown Ltd S G
VICTOR HUBERT ALEXANDER DIEDER
SG Brown Ltd
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
Priority to BE637492D priority Critical patent/BE637492A/xx
Priority to NL298219D priority patent/NL298219A/xx
Application filed by Brown Ltd S G, VICTOR HUBERT ALEXANDER DIEDER, SG Brown Ltd filed Critical Brown Ltd S G
Priority to GB4505262A priority patent/GB1006726A/en
Priority to DE1963B0073369 priority patent/DE1259389B/en
Priority to FR948137A priority patent/FR1370980A/en
Priority to CH1162263A priority patent/CH396994A/en
Priority to DK469363A priority patent/DK109394C/en
Publication of GB1006726A publication Critical patent/GB1006726A/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
    • 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
    • G10K9/00—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers
    • G10K9/12—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated
    • G10K9/122—Devices in which sound is produced by vibrating a diaphragm or analogous element, e.g. fog horns, vehicle hooters or buzzers electrically operated using piezoelectric driving means

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)

Abstract

1,006,726. Piezoelectric instruments. S. G. BROWN Ltd., and V.H.A. DIEDERICHS Aug. 16, 1963 [Nov. 28, 1962], No. 45052/62. Heading H4J. A transducer for converting electrical signals into sound waves or vice versa comprises a rigid ring, a diaphragm secured around its periphery to the ring and an elongate piezoelectric element in the form of a strip secured to the centre of the diaphragm, the longitudinal axis of the strip extending radially or diametrally with one or both ends of the strip secured to the ring, the strip having electrodes on two opposite faces normal to the general direction of displacement of the diaphragm. The strip element may be rigidly secured to the ring to form a cantilever system. Two or more strips may extend from different points on the ring inwardly to the centre of the diaphragm. An earpiece assembly for a telephone headset comprises a metal diaphragm 10 (Figs. 2, 3) which has a conical centre portion 11 and is adhered between a rigid plastics ring 12 and a rigid plastics masking disc 13. A strip piezoelectric element 14 of lead zirconate-lead titanate is adhered at its centre to the centre of the diaphragm 10. The ends of element 14 fit into silicone mounting rings 15 in recesses 16, the rings 15 being adhered to ring 12 and to disc 13. Silver electrodes on element 14 are connected by wires 17, 18 to tags 19, 20 on a terminal disc 21. The masking disc 13 is provided with apertures 23 for transmitting air vibrations and is covered with rayon mesh 22. The construction may be used for loudspeakers, hearing aids, or microphones. In a " noise cancelling " microphone disc 21 is apertured or omitted (tags 19, 20 being carried on ring 12). In a modified construction a short strip 30 (Fig. 5) of lead zirconate-lead titanate is joined at one end to a polymethyl methacrylate extension 31 to form a combined element which extends between moumting ring 12.
GB4505262A 1962-11-28 1962-11-28 Improvements in or relating to piezo-electric transducers Expired GB1006726A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
BE637492D BE637492A (en) 1962-11-28
NL298219D NL298219A (en) 1962-11-28
GB4505262A GB1006726A (en) 1962-11-28 1962-11-28 Improvements in or relating to piezo-electric transducers
DE1963B0073369 DE1259389B (en) 1962-11-28 1963-09-03 Piezoelectric converter for converting electrical signals into sound waves and vice versa
FR948137A FR1370980A (en) 1962-11-28 1963-09-20 Improvements to piezoelectric transducers
CH1162263A CH396994A (en) 1962-11-28 1963-09-20 Transducer converting electrical signals into sound waves or vice versa
DK469363A DK109394C (en) 1962-11-28 1963-10-05 Converter for converting electrical signals into sound waves and vice versa.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4505262A GB1006726A (en) 1962-11-28 1962-11-28 Improvements in or relating to piezo-electric transducers

Publications (1)

Publication Number Publication Date
GB1006726A true GB1006726A (en) 1965-10-06

Family

ID=10435706

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4505262A Expired GB1006726A (en) 1962-11-28 1962-11-28 Improvements in or relating to piezo-electric transducers

Country Status (6)

Country Link
BE (1) BE637492A (en)
CH (1) CH396994A (en)
DE (1) DE1259389B (en)
DK (1) DK109394C (en)
GB (1) GB1006726A (en)
NL (1) NL298219A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2911413A1 (en) * 2014-02-21 2015-08-26 Harman International Industries, Incorporated Loudspeaker with piezoelectric elements

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1234218A (en) * 1968-07-29 1971-06-03

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2416887A (en) * 1944-10-20 1947-03-04 Tibbetts Lab Inc Piezoelectric device
US2552878A (en) * 1947-09-24 1951-05-15 Electro Voice Second order differential microphone
DE939598C (en) * 1951-01-13 1956-02-23 Atlas Werke Ag Device for sending or receiving sound waves
GB727905A (en) * 1951-05-24 1955-04-13 Traugott Link An improved key mounting for accordions
DE1815439U (en) * 1960-04-14 1960-07-28 Steeg & Reuter G M B H Dr SMALL MICROPHONE WITH CERAMIC CONVERTER.
NL6815845A (en) * 1967-11-08 1969-05-12

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2911413A1 (en) * 2014-02-21 2015-08-26 Harman International Industries, Incorporated Loudspeaker with piezoelectric elements
US9763014B2 (en) 2014-02-21 2017-09-12 Harman International Industries, Incorporated Loudspeaker with piezoelectric elements

Also Published As

Publication number Publication date
CH396994A (en) 1965-08-15
DE1259389B (en) 1968-01-25
NL298219A (en)
DK109394C (en) 1968-04-22
BE637492A (en)

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