Friction material designed for fitting to a device employing friction in a liquid medium, and a method of producing such a friction material and the device to which it is fitted
US6835448B2 · kind B2 · utility
2Cited by
29References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 11, 1998 |
| Grant date | Dec 28, 2004 |
| Priority date | — |
| Expiry date | Mar 11, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/671
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A friction material for a liquid medium, according to the invention, consists of a fibre mat impregnated with a thermosetting resin, the fibres having a length of at least 12 mm. The method of producing such a material includes the following steps:a) a mixture of fibres of the same nature or of different natures is produced in a mixer;b) the mixture is carded to form a card web;c) the card web is lapped;d) the lap thus formed is needled;e) the needled mat is impregnated with a thermosetting resin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.