US PATENT SUBCLASS 141 / 215
.~.~.~.~.~.~ Liquid back pressure completes closing

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}
210  DF  .~.~.~ Separate controls for plural series liquid flow line valves {2}
211  DF  .~.~.~.~ Self-opening valve {2}
214  DF  .~.~.~.~.~ Pressure initiated closing control {1}
215.~.~.~.~.~.~ Liquid back pressure completes closing

DEFINITION

Classification: 141/215

(under subclass 214) Filling apparatus in which fluid in the flow line means behind the flow cut-off means operates to seat the said cut-off means.