Plied cord, production method therefor, transmission belt, and method for using same
US10941506B2 · kind B2 · utility
0Cited by
6References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 17, 2017 |
| Grant date | Mar 9, 2021 |
| Priority date | — |
| Expiry date | Mar 10, 2038 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD10B2331/021
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A plied cord includes three or four first twist yarns containing para-aramid fibers, wherein: the para-aramid fibers have an average size of 1000-1250 dtex, a tensile elasticity of 55-70 GPa and a tensile strength of 2800-3500 MPa; and for the plied cord, the number of first twists when the number of the first twist yarns is three is 33-40 twists/10 cm and the number of first twists when the number of the first twist yarns is four is 42-52 twists/10 cm, the second twist direction is the opposite direction from the first twist, and the ratio of the second twist coefficient to the first twist coefficient is 0.25-1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.