Monitoring supports in elevator installations
US8602173B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 18, 2011 |
| Grant date | Dec 10, 2013 |
| Priority date | — |
| Expiry date | Jun 13, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B5/125
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An elevator installation can comprise an elevator cage, a counterweight, a first support, a second support, a drive for driving of drive pulleys in common and for movement of the supports, and a monitoring device with two slack support switches. A first slack support switch is arranged in the region of a first fastening point for monitoring the first support. A second slack support switch is arranged diagonally opposite in the region of another fastening point for monitoring the second support. The monitoring device comprises a safety circuit, in which the two slack support switches are so integrated in a safety circuit of the elevator installation that actuation of just one of the two slack support switches interrupts the safety circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.