Electric strike field-selectable fail-safe/fail-secure mechanism
US6595563B2 · kind B2 · utility
20Cited by
39References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 13, 2001 |
| Grant date | Jul 22, 2003 |
| Priority date | — |
| Expiry date | Sep 13, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/702
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An electrically controlled strike including a strike frame; a keeper carried by the strike frame for movement when released allowing door opening and adapted to receive and resist door opening prior to keeper movement, an electrically powered solenoid carried by the frame, and a lock arm assembly operatively connected between the solenoid and the keeper for causing the keeper to assume a fail-safe condition allowing keeper movement when the solenoid is unpowered or alternatively a fail-secure condition preventing keeper movement when the solenoid is unpowered, the two conditions being selected by re-positioning an actuator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.