Breakaway for revolving doors
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 7, 1986
Grant Date -
N/A
app pub date -
Sep 29, 1983
filing date -
Sep 29, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A magnetic door breakaway system for remote unlocking of doors and apertures. An electromagnet (80), and armature (82) are mounted within a doorframe. Within either the magnet or armature are depressions (220) and (222) in one member and lands (206) and (208) in the other. In the preferred embodiment, the armature is movably affixed to the top of the doorframe and with energizing of the electromagnet, the lands mate with the depressions, making movement of the door impossible. In an emergency situation, the magnet is de-energized, the two members separate, and the door may open freely. In an alternative embodiment, an electromagnet (304) is connected to a plunger (310) which is received within the striker plate (320).
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully