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. 19, 2012
Filed:
Nov. 19, 2008
Kazuhiro Shibatani, Sakai, JP;
Kazuhiro Shibatani, Sakai, JP;
Konica Minolta Opto, Inc., Tokyo, JP;
Abstract
In a piezoelectric actuator () comprising a layered piezoelectric element () which consists of alternately stacked expansion and contraction layers () and electrode layers (), a driving shaft () of which one end is fixed to one end of the piezoelectric element () in expansion and contraction direction, a movable member () frictionally engaging with the driving shaft () and a collar () bonded to the circumference of the piezoelectric element (), by bonding the collar () to the circumference of the plurality of the expansion and contraction layers () with an adhesive (G) so that fastening force of the collar () to the expansion and contraction layers () is imbalanced with reference to the center of the cross section of the piezoelectric element () so that the piezoelectric element () expands and contracts in an imbalanced manner to incline the driving shaft () to displace minutely the movable member ().