Drive belt with tensile cords
US4498891A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 4, 1983 |
| Grant date | Feb 12, 1985 |
| Priority date | — |
| Expiry date | Feb 4, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S57/902
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A drive belt manufacture wherein tensile cords (16) are provided with a Lang twist having a ply twist constant of approximately 2.9 to 3.9 and a cable twist constant of approximately one-fifth to one-half of the ply twist constant. In a preferred embodiment, the tensile cords are formed of aromatic polyamide fibers and are provided with an adhesive coating from a solution of resorcinol, formalin, and latex rubber. The invention further comprehends subjecting the cords to a pretreatment of such an adhesive solution, an epoxy resin, or an isocyanate compound. The resultant twisted cords provide improved long life characteristics for use in drive belts and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.