Don K Shackelford

US Patent:

52359999, Aug 17, 1993

Filed:

May 22, 1992

Appl. No.:

7/887975

Inventors:

Thomas R. Lindquist - Denair CA
Don K. Shackelford - Denair CA

Assignee:

Guillotine, Inc. - Stockton CA

International Classification:

F16K 3124
F16K 3300

US Classification:

137 15

Abstract:

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.