Privacy protection for electronic lock system
US5608298A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 3, 1995 |
| Grant date | Mar 4, 1997 |
| Priority date | — |
| Expiry date | Jan 3, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/7062
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An electronic lock assembly mounts to the opposite sides of a door to provide an electronically operable level of security. An electronic reader generates a signal which is employed to control the operation of a conventional latch installation. A card reader, key pad or contact activatable data port generates a signal to actuate a motor to disengage a locking dog to thereby allow rotation of the latch handle. The motor shaft is connected to a drive screw by a coil spring to permit proper operation if a jamming condition is present. A privacy switch may be operated by an occupant of the room to block actuation of the motor, thereby denying entry to the room. A permanent magnet mounted in the door frame activates a reed switch on opening of the door, disabling the privacy switch and preventing inadvertent disablement of the electronic lock when the room is not occupied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.