US PATENT SUBCLASS 137 / 247.45
.~.~.~ Enlarged upflow leg

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

247  DF  WITH LIQUID VALVES OR LIQUID TRAP SEALS {3}
247.11  DF  .~ Liquid seal in liquid flow line; flow liquid forms seal {8}
247.41  DF  .~.~ U-seals {3}
247.45.~.~.~ Enlarged upflow leg {1}
247.47  DF  .~.~.~.~> Topside access opening

DEFINITION

Classification: 137/247.45

(under subclass 247.41) Seals wherein the upflow leg or a portion thereof ahead of the overflow into the outlet is transversely larger than the downflow (inlet) leg.