Electronic time lock
US4875351A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 19, 1988 |
| Grant date | Oct 24, 1989 |
| Priority date | — |
| Expiry date | Aug 19, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/7028
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An electronic time lock for bank vault doors and the like having a door bolting mechanism including a snubber bar, the time lock including a lock case, an intermediate vertical partition located in said chamber between front and rear walls of the case, the rear wall and intermediate partition having surfaces defining cylindrical guide bores for reciprocating movement of the snubber bar therein. A pair of electric motors are arranged in side-by-side relation on the intermediate partition to drive a blocking member through a pair of drive trains between blocking and release position for blocking the snubber bar against movement to an unlocking position and releasing the snubber bar. A printed circuit board is provided having a solid state visible display strip for displaying programmed instructions and information regarding the state of the time lock aligned with a window in the front wall of the case for viewing of the displayed information therethrough and a plurality of electrical switch program buttons are located on the front wall of the lock case.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.