Closure fasteners – Bolts – Sliding
Patent
1986-11-04
1988-12-20
Gall, Lloyd A.
Closure fasteners
Bolts
Sliding
70422, 70DIG57, 292148, 292151, 292331, E05B 3902, E05C 102
Patent
active
047921676
ABSTRACT:
A releasable bolt device 1 for securing an emergency exit door 2 comprises a support structure 3 of box-like form, a bolt member 4 slidably mounted on the structure 3 for movement relative thereto, a compression spring 5 for urging the bolt member 4 away from the door-securing position, a frangible keep member 6, and a plate 7 for retaining the keep member 6 in place whereby its presence maintains the bolt member 4 in a door-securing position. The frangible keep member 6 is weakened locally so that it may be deliberately broken at that locality by manual force applied to it, whereby the bolt member 4 is moved out of its door-securing position by the spring 5.
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Cooper Michael A.
King James C.
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