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:
Dec. 28, 2004
Filed:
Sep. 13, 2001
Applicant:
Inventor:
Yoshiaki Hata, Ashiya, JP;
Assignee:
Minolta Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02N 2/00 ; H02N 2/04 ; H01L 4/104 ; H01L 4/108 ; H02L 4/106 ;
U.S. Cl.
CPC ...
H02N 2/00 ; H02N 2/04 ; H01L 4/104 ; H01L 4/108 ; H02L 4/106 ;
Abstract
An actuator using the vibration caused by a piezoelectric element. The actuator includes: a base; a vibratory rod bonded to the base; an piezoelectric element bonded to the vibratory rod; and a contact body for contacting frictionally with the vibratory rod under an suitable frictional force exerting therebetween. The piezoelectric element is charged and discharged, so that the piezoelectric element is transformed in one direction relatively fast and in opposite direction relatively slow, and so that the contact body is driven along the vibratory rod in a set direction.