Anti-drop transmission device for a service door with a flexible curtain
US9217284B2 · kind B2 · utility
7Cited by
22References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 29, 2010 |
| Grant date | Dec 22, 2015 |
| Priority date | — |
| Expiry date | Mar 25, 2033 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/106
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An anti-fall transmission device for a handling door (1) having a flexible curtain (5) to be stacked or rolled about a drive shaft (4) during the movements thereof between an open and a closed position, includes a separate electric motor or gear motor (7) attached along a rotational axis which is offset and parallel to that of the drive shaft (4), as a protective anti-fall device (8) for connecting the motor or the gear motor (7) to the drive shaft (4) and for preventing the flexible apron (5) from accidentally falling.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.