Closure fasteners – Bolts – Sliding
Patent
1991-04-23
1992-06-16
Moore, Richard E.
Closure fasteners
Bolts
Sliding
292DIG66, 292340, 292DIG65, 292 63, 292 92, E05B 1720
Patent
active
051219506
ABSTRACT:
A fire-retardant pivoted door assembly with fire activated latching members includes a metal door frame having jambs and a header in which a fire-retardant door is mounted by a hinge assembly with a lower temperature resistance that the door and frame. Fire actuated latch bolt assemblies in the door are spaced vertically along the hinge side of the door, and include a housing providing an elongated cavity opening at the edge of the door. A latch bolt is slidably seated in the cavity and is biased towards the opening of the cavity. A fusible closure extends across the opening of the cavity and retains the latch bolt against the biasing pressure, and the hinge jamb has a spaced recess formed therein to receive the latch bolt upon melting of the fusible closure.
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Moore Richard E.
The Stanley Works
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