US PATENT SUBCLASS 141 / 214
.~.~.~.~.~ Pressure initiated closing control

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.~.~.~.~.~ Pressure initiated closing control {1}
215  DF  .~.~.~.~.~.~> Liquid back pressure completes closing

DEFINITION

Classification: 141/214

(under subclass 211) Filling apparatus in which the flow control cut-off means is started toward operative position by means responsive to a change in fluid pressure.

SEE OR SEARCH CLASS

137, Fluid Handling,

393, for level control means operated by pressure change in an outlet or inlet at liquid level in a fluid handling system of the nonseparable type; subclass 413 for fluid-pressure servo-relay operation of the level responsive valve.