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US 5,779,089 AGranted
Cryogenic storage apparatus with lid vent
AssigneeForma Scientific, Inc.
InventorWilliam West
Life of this patent
Estimating the term…
Abstract
A cryogenic storage apparatus including housing, inner storage tank which may contain cryogenic fluid such as liquid nitrogen, and a lid which is used to access the storage tank. The lid preferably completely seals the storage tank when in a closed position, and includes a vent path formed between the storage tank and ambient. This vent path leads to the rear of the housing. A flap valve is mounted to the exit point of the vent path to allow escape of evaporated liquid nitrogen as necessary.
Claims11
A cryogenic storage apparatus comprising:
- a housing;
- a cryogenic storage chamber contained within said housing and having an open end;
- a lid connected to said housing and operable to selectively expose the open end of said cryogenic storage chamber;
- a seal at least substantially surrounding the open end of said storage chamber and engageable with said lid;
- and,
- a vent path formed within said lid and leading from said cryogenic storage chamber to ambient when said lid is in a closed position, said vent path including a flap valve mounted at a rear portion of said lid for controlling gas flow through said vent path.
3 more elements
A cryogenic storage apparatus comprising:
- a housing;
- a cryogenic storage chamber contained within said housing and having an open end;
- a lid connected to said housing and operable to selectively expose the open end of said cryogenic storage chamber;
- a seal at least substantially surrounding the open end of said storage chamber and engageable with said lid;
- a vent path formed within paid lid and leading from said cryogenic storage chamber to ambient when said lid is in a closed position;
- wherein said lid is mounted on a top side of said housing and includes a peripheral portion contacting the seal and a central portion extending downwardly into said storage chamber, said vent path extending through both said central portion and said peripheral portion.
3 more elements
A cryogenic storage apparatus comprising:
- a housing;
- a cryogenic storage chamber contained within said housing and having an open end;
- a lid connected to said housing and operable to selectively expose the open end of said cryogenic storage chamber;
- a seal at least substantially surrounding the open end of said storage chamber and engageable with said lid;
- a vent path formed within said lid and leading from said cryogenic storage chamber to ambient when said lid is in a closed position;
- wherein the storage chamber is formed by a tank having a rim with the seal being engageable with said rim, and further comprising a second seal engageable with said housing a distance spaced outwardly from said rim.
3 more elements
Dependencies are inferred from the claim text.