Electromagnetic clutch for electronic locks
US5884515A · kind A · utility
29Cited by
20References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 24, 1997 |
| Grant date | Mar 23, 1999 |
| Priority date | — |
| Expiry date | Sep 24, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/11
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An electric clutch system for a mortise-type security lock is provided. The clutch system includes one or more magnets disposed in one hub of a mortise-type lock. The magnet is recessed and disposed below the interior surface of the hub that engages the opposing hub of the mortise-type lock. The opposing hub includes one or more spring-biased armatures. Upon the application of current to the magnet, the armature is drawn toward the magnet resulting in a coupling-type connection between the two hubs so that rotation of the exterior handle will open the door.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.