Driving device and door closer
US7627986B2 · kind B2 · utility
8Cited by
14References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 19, 2003 |
| Grant date | Dec 8, 2009 |
| Priority date | — |
| Expiry date | Mar 18, 2025 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05B2047/0013
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A driving apparatus for driving an assisting mechanism serving as an assistant for opening operation or closing operation of a door includes a plurality of driving sources, a plurality of driving gears that is individually provided at the driving sources, and a driven gear that is engaged with each of the driving gears. The assisting mechanism is activated through rotation of the driven gear by driving of the driving sources.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.