Coordinated elevator car door-hall door movement
US5005673A · kind A · utility
12Cited by
3References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 27, 1989 |
| Grant date | Apr 9, 1991 |
| Priority date | — |
| Expiry date | Sep 27, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B13/12
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
Movable vanes mounted on the exterior of an elevator car door engage rollers on the interior of the hallway door as the car door commences to open. Subsequent opening and closing movement of the car and the hallway doors occurs simultaneously and at the same speed so that there is no mismatched motion between the doors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.