Seal device for use in flange mating surfaces of vacuum containe

Details Seal device for use in flange mating surfaces of vacuum containe Seal device for use in flange mating surfaces of vacuum containe

1974-11-26

1976-09-07

Hart, Ro E.

Receptacles

Closures

With seal means biased by internal pressure

B65D 5300

Patent

active

039790142

ABSTRACT:
A seal device for use in the flange mating surfaces of a vacuum container of the type, in which there are provided a first member and a second member, both of which are formed with flanges, respectively, and in which the aforesaid flanges are bolted together so as to maintain the interior of the container to a lower pressure, as compared with the atmospheric pressure. With this type container, the aforesaid bolts are located outwardly on the flange mating surfaces, and a first space is provided on the innermost side of the flange mating surfaces but inwardly of the aforesaid bolts, while a second space is provided thereon between the bolts and the first space. The first space is communicated with steam guide holes provided in either of the aforesaid flanges, while steam guide holes are in communication with a steam generating source so that steam having a pressure higher than the atmospheric pressure outside the container is introduced into the first space. On the other hand, the second space is in communication with steam discharge holes provided in either of the flanges, while the aforesaid steam discharge holes are in communication with a pressure maintaining means adapted to maintain the second space to a pressure lower than the atmospheric pressure outside the container.

REFERENCES:
patent: 2203364 (1940-06-01), Rathbun
patent: 3127050 (1964-03-01), McDaniels
patent: 3225956 (1965-12-01), Laming
patent: 3430801 (1969-03-01), Hohrig

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