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. 11, 2001
Filed:
Apr. 14, 2000
Ryoichi Fujita, Tokyo, JP;
Fujita Co., Ltd., Tokyo, JP;
Abstract
When a pressure plate of a clutch for motorcycles and the like is moved to engage and disengage driving friction plates and driven friction plates, a rod driver connected to an operation rod is constructed such that a pair of operation members is assembled so as to face a plurality of guide grooves formed on a surface of interposing balls, wherein the plurality of guide grooves is formed along an imaginary circle having a radius of about 19.3 mm on the faces of each of the operation members, and the balls have a diameter of about 9.5 mm. One of the operation members is rotated with respect to the other operation member to separate the operation members because bottom surfaces of the guide grooves are slanted by an angle of between 13.7° through 14.4° from the faces, and centers of the guide grooves are most deep, as much as about 3.872 mm, in the guide grooves, whereby the clutch is securely disengaged in use by a small force.