Control system for electromagnetic lock
US6611414B1 · kind B1 · utility
8Cited by
10References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 30, 1996 |
| Grant date | Aug 26, 2003 |
| Priority date | — |
| Expiry date | Nov 21, 2018 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05C19/166
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An electromagnetic door lock has an electromagnet and an armature for bonding thereto. One of the electromagnet and the armature is adapted for mounting to a door and the other of the electromagnet and the armature is adapted for mounting to a door frame. A lock controller pulses current to the electromagnet. The pulses have a predetermined width and a predetermined spacing between pulses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.