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. 19, 2008
Filed:
Mar. 24, 2006
Applicant:
Shigeki Mori, Akita, JP;
Inventor:
Shigeki Mori, Akita, JP;
Assignee:
Akita Prefecture, Akita-shi, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01L 41/04 (2006.01); H01L 41/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
An actuator includes a piezoelectric element, and a displacement enlargement mechanism which has a movable portion configured to be displaced as the piezoelectric element is displaced and enlarges an amount of displacement of the piezoelectric element. A restraint member is fixed to the movable portion with an elastic or viscoelastic body therebetween and convert vibrational energy of the movable portion into thermal energy based on deformation of the elastic or viscoelastic body, thereby lowering a resonance peak amplitude of the actuator.