Pit cover assembly with flood protection

Details Pit cover assembly with flood protection Pit cover assembly with flood protection

1986-04-08

1987-09-22

Bell, J. Karl

Static structures (e.g., buildings)

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

With additional enclosure structure; e.g., manhole

137371, 404 25, F16L 500, E02D 2914

Patent

active

046946195

ABSTRACT:
The pit cover assembly for a prefabricated pit for servicing aircraft is provided with an inverted concave cup, or hood, hingedly connected to the underside of the pit cover. The concave cup has a mouth which opens downwardly when the pit cover is closed. The cup is adapted to receive water sensitive articles or equipment. Because the mouth of the cup is directed downwardly, the inverted cup forms an air pocket or bubble chamber which will not fill with water even when the pit is flooded. The water sensitive equipment is thereby maintained in isolation from surrounding water within the air pocket, even during conditions of flooding.

REFERENCES:
patent: 2624307 (1953-01-01), Caffrey
patent: 2828762 (1958-04-01), Swank
patent: 3220433 (1965-11-01), Steil
patent: 3482030 (1969-12-01), Wisniewski
patent: 3938545 (1976-02-01), Nagy et al.
patent: 4213111 (1980-07-01), Lux
patent: 4593714 (1986-06-01), Madden

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