Fluid handling – Liquid level responsive or maintaining systems – By float controlled valve
Patent
1992-08-07
1993-05-04
Walton, George L.
Fluid handling
Liquid level responsive or maintaining systems
By float controlled valve
137312, 137315, 137450, 141198, 251283, 251309, F16K 3132, F16K 3300
Patent
active
052072410
ABSTRACT:
A liquid fuel shut-off valve for insertion through the feed pipe opening and mounting inside a fuel tank including, in combination, a valve body having an inlet and an outlet joined by a first bore aligned axially with the feed pipe through which the fuel is fed to fill the tank, a valve spool rotatably mounted in a cross-bore formed in the valve body between the inlet and the outlet and attached to a float extending outward from the valve body that is responsive to the level of liquid in the tank, and a valve shut-off formed in the spool including a second bore formed transverse thereto for passing fuel between the inlet and the outlet, and a relief opening formed in the trailing edge of the wall of the second bore allowing progressive rotation of the second bore from a first position in full hydraulic alignment with the first bore to a second position in full hydraulic closure with the first bore free of a countervailing hydraulic turning moment developed by the flow of fuel there through.
REFERENCES:
patent: 351087 (1886-10-01), Bean
patent: 565730 (1896-08-01), Foote
patent: 610242 (1898-09-01), Poage
patent: 948519 (1910-02-01), Neal et al.
patent: 1783441 (1930-12-01), Lewis
patent: 1796808 (1931-03-01), Roberts
patent: 3218024 (1965-11-01), Kroekel
patent: 3443593 (1969-05-01), Colombo
patent: 4103868 (1978-08-01), Thompson
patent: 4193578 (1980-03-01), Brumm
patent: 4986320 (1991-01-01), Kesterman et al.
Murphey John J.
Walton George L.
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