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:
Mar. 13, 2001
Filed:
Mar. 30, 1998
Kazuo Tani, Chiba, JP;
Mizuaki Suzuki, Chiba, JP;
Hidetaka Maeda, Chiba, JP;
Youko Suzuki, Chiba, JP;
Seiko Instruments Inc., , JP;
Abstract
A piezoelectric actuator has a vibrating member having a generally central portion and a vibratable cantilever extending from the central portion. The cantilever has a first major surface, a second major surface opposite the first major surface, a first end integrally connected to the central portion, and a second free end. A piezoelectric element is connected to the second major surface of the cantilever and is driven by a voltage signal applied thereto to undergo expansion and contraction to vibrationally drive the cantilever. A moving member is in contact with the first major surface of the cantilever to be frictionally driven by vibration of the cantilevers in response to expansion and contraction of the piezoelectric element.