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US 4,131,129 AGranted
Device for controlling gas flow into vessels
OwnerRaymond A. Firestoneinventor
Life of this patent
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Abstract
Device for controlling gas flow into vessels without allowing undesired gas, such as outside air, from entering the vessel.
Claims14
A device for controlling gas flow into a vessel comprising:
- (a) means for alternately connecting a vessel with a vacuum and gas source;
- (b) a communicating means connecting said means with said gas source;
- (c) a projection communicating with said communicating means and being open at its other end;
- (d) a container enveloping at least a portion of said projection;
- (e) a float within said container capable of sealing the open end of said projection;
- (f) a liquid contained within said container and with its level above the open end of said projection;
- said liquid having a density such that it can urge the float into a sealing relationship with the end of said projection;
- and
- (g) an exit means communicating with said container, said exit means being above the level of said liquid.
6 more elements
Dependencies are inferred from the claim text.