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:
Nov. 04, 2008
Filed:
Mar. 24, 2006
Mitsuo Manabe, Saitama, JP;
Takeshi Ichimiya, Saitama, JP;
Mitsuo Manabe, Saitama, JP;
Takeshi Ichimiya, Saitama, JP;
Fujinon Corporation, Saitama-shi, JP;
Abstract
A driving mechanism comprises: (i) an electromechanical conversion element comprising: an elongating and contracting portion that elongates and contracts; and a dummy layer that does not contribute to elongation and contraction of the electromechanical conversion element, in which one end of the dummy layer is attached to one end, in elongating and contracting direction, of the elongating and contracting portion; (ii) a driving friction member directly or indirectly attached to the other end of the elongating and contracting portion of the electromechanical conversion element; and (iii) a driven member frictionally engaged with the driving friction member, wherein a center of gravity of the entire electromechanical conversion element is not made coincident with a geometric center of the elongating and contracting portion in the elongating and contracting direction.