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. 16, 1996
Filed:
Sep. 27, 1993
Ralph E Holmquist, Battle Creek, MI (US);
Eaton Corporation, Cleveland, OH (US);
Abstract
A locking differential is disclosed having a clutch pack (35) operable to retard rotation between a gear case (11) and a pair of sidegears (23,25). A cam (41) is operatively associated with the clutch and includes an axially movable cam member (43) to engage the clutch pack. The clutch pack includes active clutch discs (63,73) operable to effect the rate of engagement of the clutch pack. At least one pair of active disc surfaces having pyrolytic carbon friction material (75) and the other surface having a non-pyrolytic carbon friction material. With repeated use and increasing temperature, the rate of engagement of the clutch pack increases, providing a 'variable rate' locking differential.