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:
Jun. 25, 2002
Filed:
May. 11, 2000
Yoko Suzuki, Chiba, JP;
Kazuo Tani, Chiba, JP;
Satoshi Watanabe, Chiba, JP;
Tatsuru Sato, Chiba, JP;
Seiko Instruments Inc., , JP;
Abstract
A piezoelectric actuator has a base and a movable body disposed over a surface of the base for undergoing movement relative thereto. The movable body has a frame and at least one cantilever having a first end integrally connected to the frame and a second free end. A piezoelectric element is disposed on the cantilever for undergoing expansion and contraction movement in response to application of an alternating voltage to bring the second free end of the cantilever into and out of contact with the surface of the base to thereby move the movable body relative to the surface of the base. Spring members are connected to the frame of the movable body for regulating a direction of movement of the movable body relative to the surface of the base.