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:
Mar. 25, 2008
Filed:
Jul. 29, 2004
Yasuo Sasaki, Tokyo, JP;
Toshihiro Nakao, Tokyo, JP;
Kazutoshi Shiratori, Tokyo, JP;
Olympus Corporation, Tokyo, JP;
Abstract
In a vibration wave linear motor, a coupled driving contacting parts are respectively provided on the top and the bottom of a vibrator unit, and 2 upper and lower guide shafts which contact concave parts of the coupled driving contacting parts are supported by erecting parts of a supporting part. The lower guide shaft is pressed upward by spiral springs, so that the two guide shafts press and sandwich the vibrator. Alternating current voltages having different phases are applied to the vibrator unit, whereby the vibrator unit generates a vibration wave to generate elliptical rotation vibrations in the driving contacting parts. As a result, the vibrator, and the two guide shafts and the supporting part make a relative move in the shaft direction. Either the guide shafts or the vibrator is fixed, and the other is linked to an object to be driven.