Concrete rail safety device for an elevator car
US6981575B2 · kind B2 · utility
1Cited by
16References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 27, 1999 |
| Grant date | Jan 3, 2006 |
| Priority date | — |
| Expiry date | Aug 9, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16F7/08
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A safety device to arrest movement of an elevator car guided by non-metallic guide rails employs a friction surface mounted on a wedge. The wedge is located in proximity to an angular horizontal locator when in the unengaged position. Upon activation of the wedge during an overspeed condition the horizontal locator urges the friction surface of the wedge into contact with the guide rail.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.