Movable or removable closures – Plural wings radiate from common pivot; i.e. – revolving – Wings fold for through passage
Patent
1983-09-29
1986-01-07
Kannan, Philip C.
Movable or removable closures
Plural wings radiate from common pivot; i.e., revolving
Wings fold for through passage
E05D 1502
Patent
active
045626650
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).
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Kannan Philip C.
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