Electronically powered door with a manual override mechanism
US8806806B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 27, 2010 |
| Grant date | Aug 19, 2014 |
| Priority date | — |
| Expiry date | Mar 13, 2031 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/106
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Embodiments of the resent invention provide an electric motor driven door or barrier opener with a manually operable drive for use in the event of a power failure. The operator includes a manually rotatable drive wheel and manual rotation of the drive wheel effects a movement of at least one drive coupler in generally radially extending direction relative to the drive shaft to effect a drive coupling between the drive wheel and the drive shaft to input drive to permit manual opening and or closing of the door.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.