Flexible flat rope sheave assembly with separate shoulder and flange surfaces having varying friction properties
US6405833B1 · kind B1 · utility
18Cited by
8References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 6, 2000 |
| Grant date | Jun 18, 2002 |
| Priority date | — |
| Expiry date | Jan 6, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66D3/08
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A segmented elevator sheave assembly has independently variable shoulder and crowning elements for use with flexible flat ropes in an elevator system. This enables selection of high-traction surface finish and crowning for the sheave groove that contacts a belt, and of low-traction, smooth sheave groove shoulders having a low friction coefficient that may inadvertently contact the belt side surfaces. This configuration is more forgiving to angular misalignment of the sheave and reduces the likelihood of premature degradation of a flat flexible rope due side-surface scuffing along sheave groove shoulders.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.