Movable or removable closures – With specified means to effect emergency release to closure
Patent
1990-09-17
1991-08-06
Kannan, Philip C.
Movable or removable closures
With specified means to effect emergency release to closure
49334, 49337, E05B 6510
Patent
active
050366203
ABSTRACT:
A safety enhanced pivoting door operator is disclosed which includes an apparatus for selective restraint of the swing door to resist movement of the door in a first direction beyond the fully closed position during routine use while yet allowing movement of the door in the first direction beyond the fully closed position when sufficient force is applied to the door in non-routine situations, for example to allow emergency exit or the like. The operator includes a motor and a drive train connected with a rotatable pivot upon which the door is movable. The apparatus includes a mounting member having a deflectable bar connected therewith. A member for impeding movement of the door beyond the fully closed position is connected with the pivot, the impeding member and the deflectable bar coming into contact during normal use to thus resist movement of the door beyond the closed position, but the bar being deflectable by the impeding member to allow such movement when sufficient non-routine force is applied to the door.
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Beran Mark A.
Fortin John K.
BC Research & Development, Inc.
Burdick Harold A.
Kannan Philip C.
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