US PATENT SUBCLASS 141 / 223
.~.~.~.~.~.~ With spring means biasing valve to close

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}
223.~.~.~.~.~.~ With spring means biasing valve to close {1}
224  DF  .~.~.~.~.~.~.~> Reciprocating valve

DEFINITION

Classification: 141/223

(under subclass 220) Filling apparatus in which the flow cut-off means is urged to closing position by some additional resilient means.