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:
Sep. 22, 2015
Filed:
Apr. 13, 2012
Jun Tokumasu, Hamamatsu, JP;
Shouhei Tominaga, Hamamatsu, JP;
Jun Tokumasu, Hamamatsu, JP;
Shouhei Tominaga, Hamamatsu, JP;
KABUSHIKI KAISHA F.C.C., Shizuoka, JP;
Abstract
Provided is a wet friction plate which can realize a further reduction of drag torque while suppressing a decrease in the total area of frictional sheets. A clutch friction plateis formed by providing frictional sheetsand oil grooveson a flat annular metal core. On a side surface of the metal corefacing a clutch plate, a plurality of small frictional sheetsand oil groovesare alternatingly arranged along the circumferential direction of the metal core. The frictional sheetsare disposed to form frictional-sheet groupseach including five frictional sheetsdisposed successively. Outer and inner peripheral edgesandof the frictional sheetsof each frictional-sheet groupform continuously changing arcuate contoursandsuch that the distances Land Lbetween the outer and inner peripheral edgesandand the center of rotation O of the metal corecontinuously change.