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:
Jun. 22, 2004
Filed:
Aug. 21, 2002
Kiyokazu Ichikawa, Fukuroi, JP;
NSK-Warner K.K., Tokyo, JP;
Abstract
A multiplate clutch is provided with a clutch case and a sleeve fitted in an inner circumferential wall of the clutch case with their piston oilways registered with each other. The sleeve is provided in an outer circumference thereof with at least one notch. The inner circumferential wall of the clutch case has been crimped at a portion thereof into each notch such that a crimped portion is formed to fixedly secure the sleeve on the inner circumferential wall of the clutch case. Preferably, the crimped portion can be formed such that a front surface of the crimped portion is shallower on a side of the sleeve and deeper on a side of the clutch case. The front surface may desirably have an inclination of from 5 to 15°. Desirably, the sleeve can be provided with two or more notches.