Ropeless governor mechanism for an elevator car
US6161653A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 1998 |
| Grant date | Dec 19, 2000 |
| Priority date | — |
| Expiry date | Dec 22, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B5/18
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A ropeless governor system is provided for governing the speed of an elevator car (2) in the event of an overspeed condition. An actuator for a safety device (30) is positioned in close proximity to an elevator rail (14) and activated to come into contact and provide a dragging force against the rail in the event of an overspeed condition. The ropeless governor is coupled to an elevator safety braking system (26, 28) such that the dragging force activates the safety brakes. A safety controller (91) is used to determine if the speed of the elevator car has exceeded a predetermined threshold level and to produce a triggering signal (96) to operate the ropeless governor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.