Elevator cable tensioning device
US7802658B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 15, 2005 |
| Grant date | Sep 28, 2010 |
| Priority date | — |
| Expiry date | Apr 15, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S187/90
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An elevator may include an elevator car, two or more diverting pulleys on the elevator car, one or more hoisting ropes, a traction sheave, and a compensating device. The hoisting ropes may include first, second, third, and fourth rope portions. The first rope portions may extend upward from at least one diverting pulley and the second rope portions may extend downward from at least one diverting pulley. The first rope portions may be under a first tension caused by the compensating device acting on the third rope portion and the second rope portions may be under a second tension caused by the compensating device acting on the fourth rope portion. The first tension to the second rope tension may be maintained substantially constant and may be independent of a load of the elevator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.