Expulsion bladder
AssigneeRockwell International Corporation
InventorDeLacy F. Ferris
Life of this patent
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Abstract
A liquid expulsion device having a tank enclosing a flexible bladder containing liquid to be expelled and an insoluble gas. Prior to expulsion the combined liquid and gas volume remains constant so that during environmental changes the bladder is forced into intimate flush contact with the tank and is incapable of flexing and becoming ruptured. Liquid is expelled through a surface tension screen that blocks passage of the gas.
Claims5
A liquid expulsion tank device containing both liquid and gas, said tank device having a framework inside of a bladder for controlling the deformation configuration of the bladder as it is being collapsed within said tank, said expulsion device further having a screen sufficient to produce a surface tension barrier to block passage therethrough of said gas, the improvement which comprises:
- means to keep a constant cumulative liquid and inert gas volume in said bladder prior to liquid expulsion from said tank whereby an ullage gas bubble within said bladder is greater than the pressure of the atmosphere surrounding said expulsion device to maintain said bladder pressed out against the interior walls of said tank to prevent bladder flexure during tank temperature cycling and liquid sloshing.
Dependencies are inferred from the claim text.