Title:
CYLINDRICAL OR CURVED PIEZOELECTRIC ELEMENT
Document Type and Number:
Japanese Patent JP3270527
Kind Code:
B2
Abstract:
PURPOSE: To enhance rigid, self-shape retention properties and to impart desirable transmitting/receiving characteristics to a hydrophone, etc., by forming a platelike piezoelectric element in which a porous sheetlike electrode is buried in a surface layer of a polymer piezoelectric film in a cylindrical shape to form a cylindrical piezoelectric element.
CONSTITUTION: A cylindrical piezoelectric element 50a to be used for a transceiver of a hydrophone, a microphone, etc., for a towing sonar to be towed under water by a towboat such as a ship, etc., is composed by winding a platelike piezoelectric element 10 in which porous sheetlike electrodes 2 (2a, 2b) are buried in surface layers of both side surfaces of a polymer piezoelectric film 1 around a center line '0' of a lower layer substantially in a cylindrical shape and then connecting a gap (d) of butted parts, for example, by epoxy series adhesive 4. The piezoelectric element includes, for example, vinylidene cyanide-vinyl acetate copolymer, etc. The electrode is formed by weaving metal wires of copper, aluminum, etc., in a mesh state.
Inventors:
Suguru Satoh
Kazumoto Suzuki
Nobuhiro Moriyama
Kenichi Nakamura
Kazumoto Suzuki
Nobuhiro Moriyama
Kenichi Nakamura
Application Number:
JP20316092A
Publication Date:
April 02, 2002
Filing Date:
July 08, 1992
Export Citation:
Assignee:
Kureha Chemical Industry Co., Ltd.
International Classes:
A61B8/00; B32B7/02; G01L1/16; H01L41/047; H01L41/08; H01L41/113; H04R17/00; (IPC1-7): H01L41/08; A61B8/00; B32B7/02; G01L1/16; H04R17/00
Domestic Patent References:
| JP62103398U | ||||
| JP5582693U |
Attorney, Agent or Firm:
Akio Saruwatari (1 person outside)
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