GB992923A - Microphone - Google Patents

Microphone

Info

Publication number
GB992923A
GB992923A GB34315/62A GB3431562A GB992923A GB 992923 A GB992923 A GB 992923A GB 34315/62 A GB34315/62 A GB 34315/62A GB 3431562 A GB3431562 A GB 3431562A GB 992923 A GB992923 A GB 992923A
Authority
GB
United Kingdom
Prior art keywords
bender
plate
electrode
centre portion
frusto
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
GB34315/62A
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.)
Erie Resistor Corp
Original Assignee
Erie Resistor Corp
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 Erie Resistor Corp filed Critical Erie Resistor Corp
Publication of GB992923A publication Critical patent/GB992923A/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
    • H04R17/02—Microphones
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/42—Piezoelectric device making

Landscapes

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

Abstract

992,923. Microphones. ERIE RESISTOR CORPORATION. Sept. 7, 1962 [Sept. 22, 1961], No. 34315/62. Heading H4J. A microphone comprises a housing 1 to which is secured the rim 7 of a diaphragm 8 having a frusto-conical portion 11 and a depressed circular centre portion 9, the portion 9 having secured to it a piezoelectric " bender " 10 which is centrally located and overhangs the centre portion 9. One conductor of an output cable 5 is connected to an electrode 14 while the other conductor is connected to an electrode 15 and to a plate 2 acting as an earth plate. " Bender " 10 comprises a metal plate 12 and a ceramic plate 13 cemented together. At electrode 14, plate 13 is polarized in the direction of arrow 18 and at electrode 15 plate 13 is polarized in the direction of arrow 19. " Bender 10 is tuned to a band of frequencies by means of a recess 10a, or by adjustment of its thickness or diameter. When excited, " bender " 10 oscillates about the centre portion and outer edge portions move up and down relatively to the centre portion. Frusto-conical portion 11 has a width equal to or less than one half the mean wavelength of the operating frequency band. Diaphragm 8 is sufficiently thin and flexible to be effectively decoupled from " bender " 10. " Bender " 10 may be circular, elliptical or rectangular. Electrodes may be provided on both sides. The casing 1 is waterproof.
GB34315/62A 1961-09-22 1962-09-07 Microphone Expired GB992923A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US140016A US3206558A (en) 1961-09-22 1961-09-22 Microphone

Publications (1)

Publication Number Publication Date
GB992923A true GB992923A (en) 1965-05-26

Family

ID=22489337

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34315/62A Expired GB992923A (en) 1961-09-22 1962-09-07 Microphone

Country Status (2)

Country Link
US (1) US3206558A (en)
GB (1) GB992923A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2348564A (en) * 1999-04-01 2000-10-04 Thomson Marconi Sonar Limited An acoustic transducer for underwater use

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2119911B2 (en) * 1971-04-23 1973-11-15 Siemens Ag, 1000 Berlin U. 8000 Muenchen Electroacoustic converter, in particular microphone for telephone systems
US3510698A (en) * 1967-04-17 1970-05-05 Dynamics Corp America Electroacoustical transducer
NL6813993A (en) * 1968-09-30 1970-04-01
US3846650A (en) * 1970-10-08 1974-11-05 Dynamics Corp Massa Div Electroacoustic transducer of the vibratile diaphragm type with controlled uniformity of performance characteristics and method for controlling uniformity
US3721840A (en) * 1971-09-14 1973-03-20 Nittan Co Ltd Sound generator
US3943388A (en) * 1974-06-27 1976-03-09 Fred M. Dellorfano, Jr. Electroacoustic transducer of the flexural vibrating diaphragm type
US4035672A (en) * 1975-02-06 1977-07-12 Cts Corporation Acoustic transducer with a dual purpose piezoelectric element
US4190782A (en) * 1978-07-24 1980-02-26 Telex Communications, Inc. Piezoelectric ceramic resonant transducer with stable frequency
US4190784A (en) * 1978-07-25 1980-02-26 The Stoneleigh Trust, Fred M. Dellorfano, Jr. & Donald P. Massa, Trustees Piezoelectric electroacoustic transducers of the bi-laminar flexural vibrating type
DE3146949A1 (en) * 1981-11-26 1983-06-01 Siemens AG, 1000 Berlin und 8000 München Ultrasonic transducer
FR2579053B1 (en) * 1985-03-15 1988-04-08 Elno Exploit Groupe ACOUSTO-ELECTRIC TRANSDUCER, ESPECIALLY FOR DIFFERENTIAL MICROPHONES
JPH0749914Y2 (en) * 1986-01-29 1995-11-13 株式会社村田製作所 Ultrasonic transducer
US5185728A (en) * 1990-10-31 1993-02-09 Cyber Scientific Omnidirectional ultrasonic transducer
CN101336562B (en) * 2005-12-27 2012-11-28 日本电气株式会社 Piezoelectric actuator and electronic device

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2270167A (en) * 1938-04-28 1942-01-13 Gen Electric Sound device with piezoelectric double plates
US2242755A (en) * 1939-02-11 1941-05-20 Bell Telephone Labor Inc Acoustic device
US2406119A (en) * 1942-03-11 1946-08-20 Brush Dev Co Microphone
US2518331A (en) * 1948-05-06 1950-08-08 Bell Telephone Labor Inc Piezoelectric crystal mounting
US2910545A (en) * 1954-08-30 1959-10-27 Gen Electric Transducer
US2967957A (en) * 1957-09-17 1961-01-10 Massa Frank Electroacoustic transducer
US3025359A (en) * 1960-02-25 1962-03-13 Gulton Ind Inc Vibration-compensated pressure sensitive microphone

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2348564A (en) * 1999-04-01 2000-10-04 Thomson Marconi Sonar Limited An acoustic transducer for underwater use
US6404106B1 (en) 1999-04-01 2002-06-11 Thales Underwater Systems Limited Pressure tolerant transducer
GB2348564B (en) * 1999-04-01 2003-06-18 Thomson Marconi Sonar Ltd Transducers

Also Published As

Publication number Publication date
US3206558A (en) 1965-09-14

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