Transmission belt with anistropic composite material having an elastomer matrix
US4936814A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 25, 1988 |
| Grant date | Jun 26, 1990 |
| Priority date | — |
| Expiry date | Nov 25, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/676
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A composite material for a transmission belt includes an elastomer matrix forming a basic component of the material. There is included a cross-linking system of the elastomer matrix and at least one fiber reinforcement including fibers with a maximum length of about 30 mm. The fibers are disposed throughout the elastomer matrix and are generally oriented to extend in a first direction of reinforcement. There is at least one thermosetting resin in the elastomer matrix. The elastomer matrix which includes the cross-linking system, the fiber reinforcement and the thermosetting resin has a first equivalent tensile modulus which is calculated for a hypothetical elongation of 100% in the first direction and a second equivalent tensile modulus which is calculated for an actual or hypothetical elongation of 100% in a second direction which is perpendicular to the first direction. A second equivalent tensile modulus is at least 6 MPa. Anisotropy ratio of the first equivalent tensile modulus and the second equivalent tensile modulus is at least 6. The elastomer matrix forming the basic component is in at least one layer within the transmission belt which includes a longitudinal axis. The fir…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.