The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 04, 1984
Filed:
Jan. 06, 1983
Takeshi Nakamura, Uji, JP;
Hiroshi Nishiyama, Muko, JP;
Abstract
A piezoelectric vibrating device comprises a vibrating element supported by a support frame through at least two arms with the support frame surrounding the vibrating element. The vibrating element, the support frame and the support arms are of one-piece construction fabricated from a sheet of temperature-stable metal of constant elasticity. A ZnO layer is formed so as to overlay the vibrating element and also a portion of the support frame, and electrodes are formed so as to overlay a part of the ZnO layer on the vibrating element and another part of the ZnO layer on the support frame, respectively. One of the electrodes on the other part of the ZnO layer cooperates with the metal of constant elasticity to define a static capacitance with the ZnO layer serving as a dielectric body. An aluminum layer is interposed between the ZnO layer and the vibrating element.