Wet friction plate
US7980376B2 · kind B2 · utility
0Cited by
6References
14Claims
0Family size
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Key dates
| Filing date | Jul 28, 2008 |
| Grant date | Jul 19, 2011 |
| Priority date | — |
| Expiry date | Aug 13, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49885
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
To control initial shudder in a wet paper friction plate, the frictional sliding surface of a wet paper friction member is preconditioned by frictional sliding contact with a mating plate until its bearing length ratio tp at a cutting depth of 10 μm is in the range from 70 to 85%. The preconditioning is optionally preceded by grinding, preferably before the wet paper friction member is attached to a base plate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.