GB678825A - Improvements in or relating to piezo electric units - Google Patents

Improvements in or relating to piezo electric units

Info

Publication number
GB678825A
GB678825A GB924250A GB924250A GB678825A GB 678825 A GB678825 A GB 678825A GB 924250 A GB924250 A GB 924250A GB 924250 A GB924250 A GB 924250A GB 678825 A GB678825 A GB 678825A
Authority
GB
United Kingdom
Prior art keywords
layers
plates
layer
unit
electrodes
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
GB924250A
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB924250A priority Critical patent/GB678825A/en
Publication of GB678825A publication Critical patent/GB678825A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/54—Filters comprising resonators of piezo-electric or electrostrictive material
    • H03H9/58—Multiple crystal filters

Abstract

678,825. Piezo-electric crystals. GENERAL ELECTRIC CO., Ltd., and STEVENSON, S. A. April 13, 1951 [April 14, 1950], No. 9242/50. Class 40 (viii). A piezo-electric unit comprises three or more plates 1 and 2 bonded together to form two plane parallel layers, each layer having the same width and thickness as a single plate, and the two layers being arranged so that joins along the length of each are never situated opposite joins in the other. In the arrangement shown, this is effected by using plates 1 all of the same length, and two plates 2 of half length, are disposed in each layer and at the opposite ends of the unit. The layers are bonded by cement 3, which may be conducting and form one of the electrodes of the unit. The remaining electrodes are formed by layers 9 on the outer surfaces of the layers. A spot 4 of conducting cement on the side of the unit connects the layer 3 to a terminal wire 5, while terminal wires 7 are connected to electrodes 9. Specification 661,690 is referred to.
GB924250A 1950-04-14 1950-04-14 Improvements in or relating to piezo electric units Expired GB678825A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB924250A GB678825A (en) 1950-04-14 1950-04-14 Improvements in or relating to piezo electric units

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB924250A GB678825A (en) 1950-04-14 1950-04-14 Improvements in or relating to piezo electric units

Publications (1)

Publication Number Publication Date
GB678825A true GB678825A (en) 1952-09-10

Family

ID=9868166

Family Applications (1)

Application Number Title Priority Date Filing Date
GB924250A Expired GB678825A (en) 1950-04-14 1950-04-14 Improvements in or relating to piezo electric units

Country Status (1)

Country Link
GB (1) GB678825A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2836737A (en) * 1953-07-20 1958-05-27 Electric Machinery Mfg Co Piezoelectric transducer
US3127527A (en) * 1961-12-01 1964-03-31 Honeywell Regulator Co Control apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2836737A (en) * 1953-07-20 1958-05-27 Electric Machinery Mfg Co Piezoelectric transducer
US3127527A (en) * 1961-12-01 1964-03-31 Honeywell Regulator Co Control apparatus

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