US PATENT SUBCLASS 141 / 221
.~.~.~.~.~.~ With sensitivity or level adjustment

Current as of: June, 1999
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141 /   HD   FLUENT MATERIAL HANDLING, WITH RECEIVER OR RECEIVER COACTING MEANS

192  DF  AUTOMATIC CONTROL OF FLOW CUTOFF OR DIVERSION {4}
198  DF  .~ Level or overflow responsive {3}
206  DF  .~.~ Manually initiated valve with both manual and level cut-off controls {5}
217  DF  .~.~.~ Diverse controls for single valve {1}
218  DF  .~.~.~.~ Valve latched open {3}
220  DF  .~.~.~.~.~ Float controlled trip means {2}
221.~.~.~.~.~.~ With sensitivity or level adjustment {1}
222  DF  .~.~.~.~.~.~.~> Adjustable receiver engaging or coacting means

DEFINITION

Classification: 141/221

(under subclass 220) Filling apparatus including additional means for varying the effectiveness or responsiveness of the buoyant means.

SEE OR SEARCH CLASS

137, Fluid Handling,

416+, for quick-acting float controls for valves; 424+ for counter-balance means for float-controlled valves; 426 for level adjustment in float controls for valves.