Vapor seal for floating roof of liquid storage tank

Details Vapor seal for floating roof of liquid storage tank Vapor seal for floating roof of liquid storage tank

1993-04-20

1995-06-13

Shoap, Allan N.

Receptacles

Closures

Floating closure

220221, B65D 8834

Patent

active

054234468

ABSTRACT:
A tapered, tubular, flexible sheet material is provided as a vapor seal between a gauge well pipe and a gauge well sleeve of a floating roof in a liquid storage tank, the larger end of the seal being rigidly affixed to the sleeve and the smaller end of the seal slidingly disposed about the gauge well pipe which is affixed to the tank. The smaller end of the seal is connected to a circular weight supported by the sleeve via a plurality of cables within the hollow of the seal, and a plurality of spring loaded sections are connected to and between the weight and the well pipe to permit movement of the seal as the floating roof moves thus causing the sections to slide up and down on the well pipe.

REFERENCES:
patent: 1650340 (1927-11-01), Glass
patent: 1674038 (1928-06-01), Glass
patent: 2237461 (1941-04-01), Tokheim
patent: 3366266 (1968-01-01), Heartstedt
patent: 3409165 (1968-11-01), Creith
patent: 3493143 (1970-02-01), Thompson et al.
patent: 4243151 (1981-01-01), Bruening
patent: 4260068 (1981-04-01), McCarthy et al.
patent: 5138891 (1992-08-01), Johnson
patent: 5230436 (1993-07-01), Vaughn

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