Apparatus for permitting uninterrupted relief of cargo tank comp

Details Apparatus for permitting uninterrupted relief of cargo tank comp Apparatus for permitting uninterrupted relief of cargo tank comp

1994-12-01

1996-04-30

Nilson, Robert G.

Fluid handling

Control by change of position or inertia of system

Vent opening or closing on tipping container

137202, 137512, 137523, 137587, 1376142, 22020327, 220745, 251 83, F16K 1704

Patent

active

055115756

ABSTRACT:
The invention disclosed relates to an apparatus for permitting uninterrupted relief of cargo tank compartment internal pressures while also preventing the leakage of lading from the cargo tank to the surrounding atmosphere during sudden increases in the cargo tank internal pressure. According to one embodiment of the present invention, the cargo tank compartment pressure relief valve comprises a flow chamber coupled to an opening in the cargo tank compartment wall, wherein the flow chamber has a first opening in flow communication with the tank compartment and a second opening in flow communication with the atmosphere, whereby the first opening is under the control of a downwardly biased first vent head and the second opening is under the control of a downwardly biased second vent head.

REFERENCES:
patent: 1405525 (1922-02-01), Le Cain
patent: 1960970 (1934-05-01), Fina
patent: 2133200 (1938-10-01), Kenneweg
patent: 2159178 (1939-05-01), Rike et al.
patent: 2404924 (1946-07-01), Sacchini
patent: 3568695 (1971-03-01), DeFrees
patent: 3650293 (1972-03-01), Kutz et al.
patent: 5048553 (1991-09-01), VanDeVyvere
patent: 5135024 (1992-08-01), LaBlanc et al.
patent: 5148828 (1992-09-01), Farnham
patent: 5246027 (1993-09-01), Morris

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