Asbestos free friction element
US4539240A · kind A · utility
9Cited by
2References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 29, 1984 |
| Grant date | Sep 3, 1985 |
| Priority date | — |
| Expiry date | Nov 29, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2936
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Friction elements, particularly those employed in clutch elements, which incorporate fiber strands impregnated with a binder resin wound into a friction element and cured are markedly improved in wear characteristics and burst strength when the fiber strands are formed of a combination of glass, acrylic fiber and metallic filament. The fiber strands, twisted into a yarn and plied to form a composite yarn of opposing twist, contribute greatly to improved performance, particularly better fade resistance and engagement response, together with high burst strength.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.