Hoistway door locking system and method of controlling access to an elevator shaft
US10221044B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 22, 2014 |
| Grant date | Mar 5, 2019 |
| Priority date | — |
| Expiry date | Aug 22, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B13/165
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A hoistway door locking system includes an elevator shaft. Also included is an elevator car disposed within the elevator shaft and moveable therein between a plurality of access openings located at a plurality of levels of the elevator shaft. Further included is a plurality of locking mechanisms, at least one of the plurality of locking mechanisms being located at each of the plurality of access openings, wherein each of the plurality of locking mechanisms is operable between a locked condition and an unlocked condition, and wherein only a single locking mechanism may be in the unlocked condition at a specific time, the unlocked condition occurring upon alignment of the elevator car and the respective access opening having the single locking mechanism.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.