Aramid containing friction materials
US4374211A · kind A · utility
53Cited by
5References
40Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 15, 1981 |
| Grant date | Feb 15, 1983 |
| Priority date | — |
| Expiry date | Sep 15, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16D69/026
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The addition of aramid polymer pulp fiber to non-asbestos type friction material compositions results in a marked improvement in the flexural strength and structural integrity of preforms used in the manufacture of friction elements. The consequent handling characteristics of the preform lead to significant improvements in ease of manufacturing of the friction element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.