Elevator car door control system
US11772937B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 25, 2022 |
| Grant date | Oct 3, 2023 |
| Priority date | — |
| Expiry date | Feb 25, 2042 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B13/08
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An elevator car door control system includes a clutch and an interlock assembly. The clutch may include a stationary base and a slidable base movably attached to the stationary base. The stationary base may be adapted for attachment to a car door of an elevator car. The interlock assembly may include a locking arm operatively connected to the slidable base of the clutch and moveable from a locked position preventing translation relative to the elevator car to an unlocked position. When the car door is in a closed position, a door opening sequence may commence causing the slidable base to move relative to the car door, but the car door will only open if the slidable base presses against an object, such as a roller on a hoistway door, in which case the locking arm of the interlock assembly moves from the locked to the unlocked position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.