Fire rated closure plug

Details Fire rated closure plug Fire rated closure plug

1982-09-30

1984-02-21

Hall, G. T.

Receptacles

Closures

Externally adjustable plug or gasket

277 26, 174 51, 220 88A, 52232, 248 56, 138 89, B65D 5300

Patent

active

044324650

ABSTRACT:
A low heat transfer fitting to close an opening in a fire-rated barrier includes a cover plate, a pressure plate, a radially expandible annular gripping ring between the cover plate and the pressure plate, and adjustable fasteners between the two plates to urge them toward each other to expand the ring. A body of intumescent material is supported in the opening by the pressure plate with a low heat transfer member. Two embodiments are disclosed.

REFERENCES:
patent: 3720783 (1973-03-01), Moll
patent: 3911635 (1975-10-01), Traupe
patent: 4061344 (1977-12-01), Bradley et al.
patent: 4175671 (1979-11-01), Holl et al.
One Sheet of Installation Instructions-Square D "Fire Rated Thru-Floor Abandoning Fitting Type G2AP-TF".

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