Wet disc pack with variable co-efficients of friction discs
US6116383A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 1998 |
| Grant date | Sep 12, 2000 |
| Priority date | — |
| Expiry date | Oct 21, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D2055/0095
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.