Self-expanding waterproof cover for crane hook

Details Self-expanding waterproof cover for crane hook Self-expanding waterproof cover for crane hook

1993-12-29

1995-03-21

Wasil, Daniel D.

Induced nuclear reactions: processes, systems, and elements

Handling of fission reactor component structure within...

376203, 294131, 212221, G21C 1920

Patent

active

054003741

ABSTRACT:
A bellows-like construction which automatically extends upon immersion in water, is used to provide a relatively inexpensive water-tight enclosure for lifting equipment and the like. The lower end of the bellows is connected to the top of a rigid tubular member which extends up from a hook box or like type of structure, in a manner to form a hermetic seal. The upper end of the bellows-like arrangement is provided with a buoyant member which provides sufficient lift that, when the lifting equipment is lowered into the water to a predetermined depth, the buoyant member floats on the surface of the water in a manner which elongates a corrugated tubular portion of the arrangement and prevents radioactive water from spilling over into the box thus preventing contamination of a hook, hook block and associated apparatus which are enclosed therein.

REFERENCES:
patent: 3917953 (1975-11-01), Wodrich
patent: 5133466 (1992-07-01), Baversten
patent: 5170899 (1992-12-01), Baversten

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