Simultaneous elevator car and counterweight safety actuation
US10501286B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 2017 |
| Grant date | Dec 10, 2019 |
| Priority date | — |
| Expiry date | Jan 10, 2038 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B9/00
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An illustrative example embodiment of an elevator system includes an elevator car, a counterweight, roping coupling the elevator car and the counterweight, the roping supporting a load of the elevator car and the counterweight, and a plurality of safeties. The plurality of safeties includes a plurality of elevator car safeties supported for movement with the elevator car that are selectively actuated to engage a stationary surface to prevent movement of the elevator car. The plurality of safeties also includes a plurality of counterweight safeties supported for movement with the counterweight that are selectively actuated to engage a stationary surface to prevent movement of the counterweight. The safeties are configured for wireless communication causing essentially simultaneous actuation of the elevator car safeties and the counterweight safeties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.