Latch
US6592157B1 · kind B1 · utility
8Cited by
5References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 2, 2000 |
| Grant date | Jul 15, 2003 |
| Priority date | — |
| Expiry date | Sep 28, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/1082
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An entry door lock system includes an energy storage device (27) to permit unlatching if unlatching movement of a door handle occurs before the latch has been unlocked. The device (27) is passive if unlocking occurs before unlatching movement of the door handle. The invention avoids the need for repeat movement of the door handle in cases where unlocking follows initial door handle movement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.