Elevator control safety device
US5023409A · kind A · utility
2Cited by
5References
12Claims
0Family size
Inventor
Key dates
| Filing date | Aug 2, 1989 |
| Grant date | Jun 11, 1991 |
| Priority date | — |
| Expiry date | Aug 2, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B5/02
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A device for rendering elevator "call" buttons inaccessible during an emergency via a swinging or sliding panel or a rotating device which rotates the buttons from view. In all cases, safety instructions/information is displayed in place of the elevator "call" buttons.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.