GB665451A - Piezoelectric plastic material and method of making same - Google Patents

Piezoelectric plastic material and method of making same

Info

Publication number
GB665451A
GB665451A GB6352/48A GB635248A GB665451A GB 665451 A GB665451 A GB 665451A GB 6352/48 A GB6352/48 A GB 6352/48A GB 635248 A GB635248 A GB 635248A GB 665451 A GB665451 A GB 665451A
Authority
GB
United Kingdom
Prior art keywords
piezo
electric
group
layers
outside
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
GB6352/48A
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.)
Technical Assets Inc
Original Assignee
Technical Assets Inc
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 claimed from US483514A external-priority patent/US2420864A/en
Application filed by Technical Assets Inc filed Critical Technical Assets Inc
Publication of GB665451A publication Critical patent/GB665451A/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
    • B06B1/0674—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 low impedance backing, e.g. air
    • 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
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/01—Manufacture or treatment
    • H10N30/09—Forming piezoelectric or electrostrictive materials
    • H10N30/092—Forming composite materials
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/80—Constructional details
    • H10N30/85—Piezoelectric or electrostrictive active materials
    • H10N30/852—Composite materials, e.g. having 1-3 or 2-2 type connectivity

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)

Abstract

665,451. Sub-aqueous signalling apparatus. TECHNICAL ASSETS, Inc. Feb. 29, 1948 [April 17, 1943], No. 6352/48. Class 40 (iv). [Also in Group XL (b)] A piezo-electric material comprising crystal particles incorporated in a plastic binder (see Group XL (c)) is used in a subaqueous supersonic transmitter and receiver. The apparatus comprises a central plate 36 (Fig. 11) between two layers of a material 37 non-transparent to supersonic waves. On the outside surfaces of this material are placed electrodes 38 on top of which piezo-electric slabs 39 are placed. The assembly is surrounded at its periphery by an insulating ring 40 within a metal ring 41 connected to the central plate. The outside surface of the piezo-electric slabs may be covered with metal foil. An alternative arrangement (Fig. 12) comprises a central reflecting plate 44 having a slab of piezo-electric material 47 on both sides, on the outside of which the electrodes 48 are placed. The whole is enclosed in an insulating case 49. In both arrangements the layers are cemented together. Specification 352,419, [Group XL], is referred to.
GB6352/48A 1943-04-17 1948-02-29 Piezoelectric plastic material and method of making same Expired GB665451A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US483514A US2420864A (en) 1943-04-17 1943-04-17 Piezoelectric plastic material and method of making same
US503785A US2434143A (en) 1943-04-17 1943-09-25 Supersonic signal transmitter and receiver

Publications (1)

Publication Number Publication Date
GB665451A true GB665451A (en) 1952-01-23

Family

ID=27047682

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6352/48A Expired GB665451A (en) 1943-04-17 1948-02-29 Piezoelectric plastic material and method of making same

Country Status (4)

Country Link
US (1) US2434143A (en)
CH (1) CH278746A (en)
FR (1) FR944718A (en)
GB (1) GB665451A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE965542C (en) * 1952-09-27 1957-06-13 Siemens Ag Piezoelectric oscillator made of ceramic
EP0017216A2 (en) * 1979-04-06 1980-10-15 Siemens Aktiengesellschaft Ultrasonic transducer

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2518883A (en) * 1947-08-29 1950-08-15 Brush Dev Co Means for and method of moistureproofing a piezoelectric crystal element
US2636134A (en) * 1947-10-01 1953-04-21 Arnold B Arons Piezoelectric pressure gauge element
US2746291A (en) * 1950-09-08 1956-05-22 Robert C Swengel Fluid velocity measuring system
NL83008C (en) * 1951-04-28
US2688121A (en) * 1951-11-03 1954-08-31 Andersen Lab Inc Ultrasonic delay line
US2748369A (en) * 1951-12-07 1956-05-29 Birmingham Small Arms Co Ltd Transducer
US2875352A (en) * 1953-03-04 1959-02-24 Gulton Ind Inc Blast gauge
US2961635A (en) * 1956-11-09 1960-11-22 Winfield J Trott Low-frequency underwater sound flexure mode ring drive transducer
US3202962A (en) * 1959-09-03 1965-08-24 Honeywell Inc Transducer
US3321648A (en) * 1964-06-04 1967-05-23 Sonus Corp Piezoelectric filter element
US3443170A (en) * 1968-02-09 1969-05-06 Charles F Pulvari Ohmic contact to a substrate of insulating material having a doped semiconductive oxide providing a stepped energy gap
US3562451A (en) * 1968-06-11 1971-02-09 Us Navy Microphone and headset for underwater swimmer
US3555311A (en) * 1969-01-23 1971-01-12 Marquardt Corp High pressure piezoelectric transducer
FR2145099A5 (en) * 1971-07-08 1973-02-16 Inst Francais Du Petrole
DE2315767C3 (en) * 1973-03-29 1975-09-11 Siemens Ag, 1000 Berlin Und 8000 Muenchen Method of manufacturing a piezoelectric body
JPS5920234B2 (en) * 1979-09-27 1984-05-11 沖電気工業株式会社 Ultrasonic transducer
US4326155A (en) * 1980-06-03 1982-04-20 Griebeler Elmer L Shockwave probe
GB2219129B (en) * 1988-05-26 1992-06-03 Plessey Co Plc Improvements in and relating to piezoelectric composites
GB9108490D0 (en) * 1991-04-20 1991-06-05 Jones Richard W Device for acoustic wave generation

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR502913A (en) * 1917-05-19 1920-05-29 Constantin Chilowsky Methods and apparatus for generating directed underwater signals and for the remote location of underwater obstacles
US1830328A (en) * 1926-12-20 1931-11-03 Fed Telegraph Co Cast piezo-electric device
US1788405A (en) * 1927-01-11 1931-01-13 Fed Telegraph Co Composite piezo-electric acoustic device
DE476506C (en) * 1928-04-18 1929-05-22 Siemens & Halske Akt Ges Process for the production of piezoelectric bodies
US2009451A (en) * 1931-01-17 1935-07-30 Submarine Signal Co Towing device
US2105010A (en) * 1933-02-25 1938-01-11 Brush Dev Co Piezoelectric device
US2086891A (en) * 1934-10-23 1937-07-13 Bachmann Jakob August Method of treatment for fermented and distilled beverages and the like
US2233992A (en) * 1938-01-03 1941-03-04 Gulf Research Development Co Method of and apparatus for surveying wells
GB527562A (en) * 1938-05-25 1940-10-11 Reimar Pohlman Improvements in or relating to massage apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE965542C (en) * 1952-09-27 1957-06-13 Siemens Ag Piezoelectric oscillator made of ceramic
EP0017216A2 (en) * 1979-04-06 1980-10-15 Siemens Aktiengesellschaft Ultrasonic transducer
EP0017216A3 (en) * 1979-04-06 1980-11-12 Siemens Aktiengesellschaft Berlin Und Munchen Ultrasonic transducer

Also Published As

Publication number Publication date
FR944718A (en) 1949-04-13
CH278746A (en) 1951-10-31
US2434143A (en) 1948-01-06

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