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:
Feb. 09, 2010
Filed:
Dec. 26, 2007
Yoshichika Kato, Tokyo, JP;
Keiichi Mori, Tokyo, JP;
Yoshichika Kato, Tokyo, JP;
Keiichi Mori, Tokyo, JP;
Hosiden Corporation, Osaka, JP;
Abstract
There is provided an electrostatic actuator with the interdigitated electrode structure comprising a movable roddisposed in parallel with an alignment axis line Ox predetermined on a substrate; a movable interdigitated electrodefixed on the both sides of a coupling pointC on the movable rodand having a plurality of movable electrode fingers; fixed interdigitated electrodesfixed to the substrate and having a plurality of fixed electrode fingers; and four hingeswhose one ends are anchored respectively to the movable rod and the other ends are anchored to anchoring pointsA-D of the substrate. Lengths of those hinges are longer than distances from anchoring points to the alignment axis line and a displacement Lc of a coupling pointC in a direction orthogonal to the alignment axis line is reduced to be smaller than a distance between the respective movable electrode fingers and the closest fixed electrode finger.