Secondary seal for floating roof storage tanks

Details Secondary seal for floating roof storage tanks Secondary seal for floating roof storage tanks

1981-06-11

1982-07-13

Ward, Jr., Robert S.

Receptacles

Closures

Floating closure

277 12, 277138, B65D 87207

Patent

active

043390528

ABSTRACT:
A secondary seal for a floating roof product storage tank has a cross-sectional shape substantially that of a right triangle. The hypotenuse of that right triangle contacts the primary seal and one leg of the seal extends outwardly of the roof rim. The seal is supported to extend downwardly from the rim and is deformable.

REFERENCES:
patent: 3136444 (1964-06-01), Moyer
patent: 3333725 (1967-08-01), Hirata et al.
patent: 4099644 (1978-07-01), Nuttall et al.
patent: 4173291 (1979-11-01), Hills

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