Electronic lockset assembly and control
US4887442A · kind A · utility
18Cited by
4References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 27, 1988 |
| Grant date | Dec 19, 1989 |
| Priority date | — |
| Expiry date | Sep 27, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/7062
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An electronic lock includes a bolt having a fully extended position when a door is closed and a partially extended position when the door is open. The lockset is selectively placed in a locked state when the bolt is in its fully extended position. A switch is responsive to the position of the bolt and has a first operating position when the bolt is fully extended and a second operating position when the bolt is partially extended. A processor is responsive to the switch for preventing the selective locking of the bolt when the bolt is partially extended.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.