Electronic lock for hotel room safes and the like
US4887445A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 30, 1989 |
| Grant date | Dec 19, 1989 |
| Priority date | — |
| Expiry date | May 30, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/7102
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
An electronic lock controlled safe for hotel rooms and the like including a box-like safe having a safe door and door frame, an electronic lock mounted on the door including a forwardly exposed keypad and display window assembly, the keypad having plural finger-actuated keys with associated numerals and legends and an associated electrically activated alpha-numeric display strip located adjacent the keypad for displaying messages through the display window to an operator. The lock mechanism on the door includes a bolt movable between projected and retracted positions respectively for locking and unlocking the door, an electric motor and drive wheel mechanism driven thereby including a slip clutch, a movable link member coupled to the slip clutch and the bolt, photoelectric light sensors positioned adjacent the link providing sensor beam paths selectively intercepted by portions of the link for sensing predetermined positions of the link, and micro-processor circuitry responsive to signals from the keypad keys and the sensor signals for activating the display strip to display predetermined messages and for activating the electric motor to move the bolt to projected and retracted pos…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.