Electric door lock
US8291733B2 · kind B2 · utility
15Cited by
1References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 22, 2010 |
| Grant date | Oct 23, 2012 |
| Priority date | — |
| Expiry date | May 27, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/82
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An electric door lock includes a transmission wheel driven by a motor and incorporating a spring with a driving end to drive a driven wheel. The transmission wheel and the driven wheel are rotatably sleeved around an inner drive tube connected to an inner handle. A spindle is inserted into the inner drive tube and has an operating end exposed from the inner handle. The driven wheel is connected integrally to the spindle for rotation. Preferably, a coupling piece extends through an arc-shaped slot in the inner drive tube and interconnects the driven wheel and the spindle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.