US PATENT SUBCLASS 141 / 295
.~.~.~ Concentric open vent

Current as of: June, 1999
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141 /   HD   FLUENT MATERIAL HANDLING, WITH RECEIVER OR RECEIVER COACTING MEANS

285  DF  MULTIPLE PASSAGE FILLING MEANS FOR DIVERSE MATERIALS OR FLOWS {10}
291  DF  .~ With valve operated by receiver engaging means {2}
292  DF  .~.~ Valve operator interconnected with receiver inlet engaging means {2}
295.~.~.~ Concentric open vent

DEFINITION

Classification: 141/295

(under subclass 292) Filling apparatus having an opening to the ambient air defined by a means which encircles the contents material flow line to the receiver or lies within and is coaxial with the contents material flow line.