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:
Jul. 09, 2013
Filed:
Apr. 05, 2010
Hisao Ito, Saitama, JP;
Hideo Yoshida, Saitama, JP;
Takezo Nagamitsu, Saitama, JP;
Tetsuya Tokoro, Oizumi-machi, JP;
Yukihiko Sigeoka, Oizumi-machi, JP;
Hisao Ito, Saitama, JP;
Hideo Yoshida, Saitama, JP;
Takezo Nagamitsu, Saitama, JP;
Tetsuya Tokoro, Oizumi-machi, JP;
Yukihiko Sigeoka, Oizumi-machi, JP;
FUJIFILM Corporation, Tokyo, JP;
Sanyo Semiconductor Co., Ltd., Gunma, JP;
Sanyo Electric Co., Ltd., Moriguchi-Shi, JP;
Abstract
A driving apparatus includes a piezoelectric element which undergoes expansion/contraction motion by a driving signal; a driving shaft which is mounted on the piezoelectric element, and undergoes reciprocating movement according to the expansion/contraction motion of the piezoelectric element; a first movement member which is friction-engaged with the driving shaft, and moves due to the reciprocating movement of the driving shaft; and a first control portion which applies driving signals to the piezoelectric element; the first control portion applies driving control pulse signals when the first movement member is to be moved, and applies stop control pulse signals when the stopped first movement member is not to be moved to put the first movement member into a vibration-arrested state. By this means, the stopped first movement member can be smoothly moved, and the first movement member in motion can be smoothly stopped.