US PATENT SUBCLASS 137 / 247.33
.~.~ Downward partition encircles projecting outlet

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}
247.33.~.~ Downward partition encircles projecting outlet

DEFINITION

Classification: 137/247.33

(under subclass 247.11) Seals in which the U-shaped passage is formed by a chamber having a downwardly extending partition comprising an inverted cup and a distinct outlet pipe which projects up into the cup.

SEE OR SEARCH CLASS

210, Liquid Purification or Separation,

163+, and 247 for grated inlet surface drains with similar liquid seal means where the inverted cup functions as a filtrate splash plate or deflector.