US PATENT SUBCLASS 137 / 246.13
.~.~ Feed by or with actuation

Current as of: June, 1999
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137 /   HD   FLUID HANDLING

237  DF  WITH CLEANER, LUBRICATION ADDED TO FLUID OR LIQUID SEALING AT VALVE INTERFACE {2}
246  DF  .~ Liquid supplied at valve interface {8}
246.13.~.~ Feed by or with actuation

DEFINITION

Classification: 137/246.13

(under subclass 246) Valves wherein the feed means is actuated by the valve actuator or is so interrelated therewith that feeding of sealing liquid is dependent on valve actuation.