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. 12, 2000
Filed:
Oct. 21, 1998
Lee A Bissonnette, Clarkston, MI (US);
Theodore H Stringer, III, Southfield, MI (US);
Meritor Heavy Vehicle Systems, LLC, Troy, MI (US);
Abstract
A disc pack for a wet disc brake assembly includes a plurality of rotating discs. The rotating discs adjacent the axial end of the disc pack are formed of a lower co-efficient of friction material than more centrally located discs. In this way, the wear across the disc pack is more uniform, and a greater load can be carried. In addition, in this way the centrally located discs provide greater braking work than they would if they had the same co-efficient of friction as the axially outermost discs. Applicant has determined that the axially outermost discs see greater force from the braking components, and thus would perform more work than the central discs given equal co-efficients of friction. In this way, the useful life of the disc pack is increased since more work is done by the central discs and wear is more uniform.