Electronic door lock
US4899562A · kind A · utility
95Cited by
16References
9Claims
0Family size
Inventors
Key dates
| Filing date | May 11, 1988 |
| Grant date | Feb 13, 1990 |
| Priority date | — |
| Expiry date | May 11, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/7418
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An electronic door lock is provided with a single control knob used for entering a predetermined combination through manipulation of the knob in a first arc of rotation, the code being entered by pushing the dial inwardly to bring a push pad into contact with individual ones of an arcuate array of electrical switches provided on a printed circuit board within the lock housing, the release of the door locking bolt being accomplished after entry of the predetermined code by further manipulation of the control knob through remaining portions of knob rotation which are unavailable until after entry of the predetermined code.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.