Patent ID: 6810905
Filing Date: 2004-11-02
Classification: F16K,Y10T

Abstract:
An overflow protection device comprising:a valve body having a gas conduit extending through the valve body, the gas conduit comprising a conduit inlet opening for introducing pressurized gas, a conduit outlet opening for permitting the pressurized gas to exit, and a valve chamber between the conduit inlet opening and the conduit outlet opening; a valve within the valve opening and being mounted for movement from a closed position preventing pressurized gas from passing from the conduit inlet opening to the conduit outlet opening to an open position permitting pressurized gas to pass from the conduit inlet opening to the conduit outlet opening; the valve being biased to the closed position by the pressure of the pressurized gas from the conduit inlet opening; a float movably mounted to the valve body; a cam associated with the float and being movable in response to movement of the float between a full position and a less than full position; an actuator mounted for movement within the valve body and being in engagement with the cam, the actuator being movable in response to movement of the float to the less than full position to engage the valve and hold the valve in the open position and being movable in response to the movement of the float to the full position to withdraw from the valve and permit the valve to move to the closed position; a valve retainer within the valve opening and in engagement with the valve, the valve retainer being positioned between the valve and the conduit inlet opening of the valve body, wherein the valve retainer includes a valve cavity partially surrounding the valve, the valve retainer including at least four sides surrounding the valve cavity, a first two of the four sides being adjacent one another and having a first length, a second two of the four sides being adjacent one another and having a second length less than the first length.