Floor hatch

Details Floor hatch Floor hatch

1974-09-05

1976-08-24

Purser, Ernest R.

Static structures (e.g., buildings)

With entrance for persons or objects in horizontal or...

With additional enclosure structure; e.g., manhole

49463, 404 25, E02D 2914

Patent

active

039758702

ABSTRACT:
A floor hatch including an outer framework adapted to be installed in a floor of a building and having an abutment face at the upper end of the inner surface of the framework and a cover assembly fitted in the outer framework, said cover assembly including an inner framework having an abutment face at the upper end of the outer surface of the inner framework for abutting against the abutment face on the outer framework and a cover member attached to the inner framework for closing the opening in the inner framework, whereby the cover assembly is fitted and supported in the outer framework.

REFERENCES:
patent: 1027911 (1912-05-01), Schumacher
patent: 1600761 (1926-09-01), Haase
patent: 2109287 (1938-02-01), Elkington
patent: 2194221 (1940-03-01), Elkington
patent: 3408778 (1968-11-01), Mason
patent: 3712009 (1973-01-01), Campagna

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