Space saving double seal

Details Space saving double seal Space saving double seal

1993-06-28

1994-02-08

Shoap, Allan N.

Receptacles

Closures

Floating closure

220222, 220221, B65D 8846

Patent

active

052842690

ABSTRACT:
The space saving double seal uses a lower shoe, an upper shoe and a pair of vapor barriers joining them to a conventional outer rim plate on a floating roof. The secondary vapor barrier extends from the outer rim plate to the top of the upper shoe. A pair of pusher springs maintain the shoes against the tank's inner wall. The invention provides for liquid storage to the full height which the floating roof allows.

REFERENCES:
patent: 2536019, Allen
patent: 2855122 (1958-10-01), Ulm et al.
patent: 2888161 (1959-05-01), Springer
patent: 2897998 (1959-08-01), Ulm
patent: 3565279 (1971-02-01), Joor
patent: 4308968 (1982-01-01), Thiltgen et al.
patent: 4811859 (1989-03-01), Kinghorn, Jr.
patent: 5036995 (1991-08-01), Wagoner

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