US PATENT SUBCLASS 141 / 218
.~.~.~.~ Valve latched open

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.~.~.~.~ Valve latched open {3}
219  DF  .~.~.~.~.~> Electromagnetic trip
220  DF  .~.~.~.~.~> Float controlled trip means {2}
225  DF  .~.~.~.~.~> Air displacement trip means {1}

DEFINITION

Classification: 141/218

(under subclass 217) Filling apparatus in which the cut-off means is mechanically held by a stop means (not by weight or gravity or vacuum) in open position during normal operation of the filling means against a closing bias.

SEE OR SEARCH THIS CLASS, SUBCLASS:

200, for a funnel valve similarly arranged.

217, for valve means held open by its weight or gravity or by vacuum means.

SEE OR SEARCH CLASS

137, Fluid Handling,

420+, for trip mechanism in float-controlled valves. 251, Valves and Valve Actuation,

66+, for trip control of biased valves generally.