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:
Jan. 05, 2010
Filed:
Feb. 01, 2006
Applicant:
Kiyokazu Ichikawa, Fukuroi, JP;
Inventor:
Kiyokazu Ichikawa, Fukuroi, JP;
Assignee:
NSK-Warner K.K., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16D 25/0638 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention provides a wet type multi-plate clutch comprising a first friction engaging element coaxially arranged within a clutch housing, a second friction engaging element alternately disposed with the first friction engaging element and a piston for applying an axial load to engage the first and second friction engaging elements with each other and wherein a projection protruding toward the piston is provided on the clutch housing and a recessed portion is provided in the piston so that a relative rotation between the clutch housing and the piston is prevented by engaging the projection with the recessed portion.