Rope construction
US5931076A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 20, 1998 |
| Grant date | Aug 3, 1999 |
| Priority date | — |
| Expiry date | Jul 20, 2018 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD07B2207/4072
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A method for construction of a large diameter braided rope. The rope is formed of high strength, low elongation synthetic fibers which are twisted together at a twist factor in the range from about 125 to about 145 to form a plurality of comparatively small diameter yarns. The small diameter twisted yarns are then braided together at a pick multiplier in the range from about 1.0 to about 2.0 so as to form a plurality of braided strands, and the strands, in turn, are braided together with a pick multiplier of about 2.0-3.6 so as to form the large diameter braided rope. The braiding of the strands imparts a degree of coherence which permits a lower twist factor to be used in the yarns. This results in a significant increase in translational efficiency over conventional twisted-strand construction, by avoiding the over twisting of low elongation fibers which occurs when forming large diameter yarns.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.