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:
Feb. 01, 1983
Filed:
Nov. 30, 1979
Kazuyoshi Fujioka, Tokyo, JP;
Mitsuo Ikkatai, Ome, JP;
Nissan Motor Company, Limited, Yokohama, JP;
Abstract
A wet multiple disc clutch device for a vehicle transmission, comprising: a clutch drum functioning as a power input, the drum having a plurality of drive grooves formed on the inner surface of said clutch drum; a plurality of device plates each having a plurality of projections which engage with the drive grooves; a plurality of driven plates connected to the output shaft of the vehicle transmission and interleaved with the drive plates; a piston actuated by a hydraulic control pressure and adapted to press the drive and driven plates in contact; and a conical plate disposed between an endmost of the drive plates and the piston, having at least one projection formed on the outer circumference thereof the projection being engaged with the drive grooves on the clutch drum.