F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
F16K 31/18 (2006.01) B67D 7/36 (2010.01) F16K 31/24 (2006.01)
Patent
CA 2083585
A tank-filling drop tube assembly (2, 48) includes a drop tube (16, 50) and a linear motion shut-off valve assembly (24). One embodiment includes a barrier (30) which seals the interior of the drop tube. Outlet ports (32) are formed through the drop tube above the barrier. A restrictor sleeve (26, 58) is mounted around the outside of the drop tube just below the outlet ports. The restrictor sleeve is connected to a float (36) at the upper end (10) of the drop tube. When the tank (4) is substantially filled, the float lifts the restrictor sleeve to seal the outlet ports to help prevent overfilling of the tank. In an alternative embodiment, the shut-off valve assembly (80) includes a liquid level sensing floating valve element (90, 110) mounted within the interior (78, 106) of the drop tube. When the liquid level within the tank reaches the valve element, the valve element begins floating until it blocks liquid flow through the drop tube. Thus, in this embodiment, the float acts as both the float and the valve element which seals off the drop tube.
Lindquist Thomas R.
Shackelford Don K.
Fetherstonhaugh & Co.
Guillotine Inc.
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