Hinge with opening occupied by an intumescent material

Details Hinge with opening occupied by an intumescent material Hinge with opening occupied by an intumescent material

1991-05-16

1992-12-22

Larson, Lowell A.

Miscellaneous hardware (e.g., bushing, carpet fastener, caster,

Hinge

Specific leaf structure

16385, 16223, 16379, 16392, E05D 502

Patent

active

051724529

ABSTRACT:
A hinge for use with a fire door has a blade in which there are formed a number of screw holes and a larger opening. The larger opening is filled with an intumescent material.

REFERENCES:
patent: 904620 (1908-11-01), Kiple
patent: 1132560 (1915-03-01), Christophel
patent: 1141171 (1915-06-01), Brownjohn
patent: 3082474 (1963-03-01), Anderson
patent: 3083403 (1963-04-01), Van Noord
patent: 3345679 (1967-10-01), Anderson
patent: 4297252 (1981-10-01), Caesar et al.
patent: 4543687 (1985-10-01), Law
patent: 5053077 (1991-10-01), Crompton

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