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:
Oct. 11, 2005
Filed:
May. 29, 2003
Yoshiaki Hata, Ashiya, JP;
Yasuhiro Okamoto, Tondabayashi, JP;
Yoshiaki Hata, Ashiya, JP;
Yasuhiro Okamoto, Tondabayashi, JP;
Minolta Co., Ltd., Osaka, JP;
Abstract
In order to provide a linear actuator which is capable of solving deposition of deposit due to a long-time use and preventing malfunction, the linear actuator has a driving shaftwhich reciprocates or expands and contracts to its axial direction, a sliderwhich is frictionally engaged with the driving shaft so as to be movable along the driving shaft, and driving controller for controlling a motion of the driving shaft so that the slider moves to an arbitrary moving direction. The driving controller has a self-maintenance mode for advancing Nand retreating Nthe slideralternatively, and making an advancing amount and a retreating amount different, controlling the driving shaftso as to entirely move the sliderto any one of the directions.