Door lock system
US7568741B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 14, 2007 |
| Grant date | Aug 4, 2009 |
| Priority date | — |
| Expiry date | Oct 20, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/1082
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A door lock system includes a first link lever, a second link lever, and a spring. The first link lever moves to a transmitting position in response to an unlocking operation. The second link lever includes a ratchet driver that is formed integrally with a bushing. The ratchet driver is rotatable between a first rotational position and a second rotational position on the first link lever. In response to a door-opening operation, when the ratchet driver is in the first rotational position and the first link lever is in the transmitting position, the second link lever allows a ratchet lever to disengage a ratchet from a latch. The spring maintains the second link lever in the first rotational position when the first link lever moves to the transmitting position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.