Single rope elevator governor
US6318506A · kind A · utility
6Cited by
4References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 22, 2000 |
| Grant date | Nov 20, 2001 |
| Priority date | — |
| Expiry date | May 22, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B5/044
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An elevator system that includes a cab unit is connected by a hoisting system to a counterweight unit so that both units move at the same speed over vertical rails. A single governor rope is trained in an endless loop between an upper drive sheave and a lower tensioning sheave so that a pair of vertically disposed parallel runs of rope pass between the units. A bidirectional governor brake is arranged to retard the ropes speed when an over speed condition is encountered. Safeties associated with both units are connected to the opposite runs of the governor rope and are tripped when the governor rope is braked.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.