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:
May. 12, 1998
Filed:
Jan. 31, 1996
Osamu Takahashi, Suwa, JP;
Yasuharu Hashimoto, Suwa, JP;
Eiichi Nagasaka, Suwa, JP;
Hajime Miyazaki, Suwa, JP;
Tsukasa Funasaka, Suwa, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A power generator is provided and includes a piezoelectric transducer which generates electric power upon application of a strain. The power generator includes a vibrating arm having a sandwich structure wherein a support layer is held between at least two piezoelectric portions. The vibrating arm is wider on the support end than at a free end. The piezoelectric portions are extended to a root portion of the vibrating arm so that strain energy may efficiently be converted into electric energy. The piezoelectric portions each have a laminated structure so that piezoelectric power generator having the electromotive voltage and the capacitance optimum for charging may be realized.