Elevator monitor and drive safety apparatus
US8820482B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 2012 |
| Grant date | Sep 2, 2014 |
| Priority date | — |
| Expiry date | Jan 30, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B13/22
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Safety apparatus for elevator apparatuses which can move a cab via a drive, wherein the drive can be monitored via a monitoring unit for monitoring the drive, including: a first safety circuit, which has a closed conduction state and an open conduction state, with an interruption apparatus for interrupting the drive depending on the conduction state of the first safety circuit, a safety device, which includes at least two sensors, which can be switched between at least two switching states depending on a state to be detected by the sensors. To provide improved maintenance, a switching unit is provided, which can be switched between at least two switching states by connection to the safety device and is designed to effect the closed and/or open conduction state of the first safety circuit, wherein the switching unit includes a transmission device for transmitting data and/or monitoring signals to the monitoring unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.