Fluid handling – Control by change of position or inertia of system – With second control
Patent
1974-11-01
1976-07-20
Nilson, Robert G.
Fluid handling
Control by change of position or inertia of system
With second control
137 43, 137 73, F16K 1736
Patent
active
039700984
ABSTRACT:
Disclosed is an improved tank vent. The vent prevents liquid loss if the tank is inverted and prevents contaminants from entering the tank. The vent includes an elongated housing forming a tubular chamber communicating with the interior of the tank. Disposed within the chamber is an annular valve seat. Disposed within the chamber adjacent the valve seat is a free sliding elongated buoyant valve member. The buoyant valve member has a protruding valve surface disposed on the end of the buoyant member adjacent the valve seat. The surface area of the valve surface is significantly less than the surface area of the end of the buoyant member upon which the valve surface is disposed. The valve surface is configured to sealably engage the valve seat for movement into and out of contact with the seat as the buoyant member moves within the chamber. Further disposed within the chamber is a free moving weighted member which moves the buoyant member to engage the protruding valve surface with the valve seat when the tank is inverted. Recessed passageways which slope toward the tank surface connect the chamber through the annular valve seat to the exterior of the tank.
REFERENCES:
patent: 1363263 (1920-12-01), Ohliger
patent: 2194348 (1940-03-01), Zoder
patent: 2510098 (1950-06-01), Geisler
patent: 2919707 (1960-01-01), Seidler
patent: 3765435 (1971-11-01), Schlanzky
patent: 3768498 (1973-10-01), Urban
patent: 3916928 (1975-11-01), Enoch
Boswank Stuart E.
Jones Robert H.
Whaley Newton P.
Nilson Robert G.
Southwest Wheel and Manufacturing Company
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