US PATENT SUBCLASS 53 / 274
.~.~ Including closure port valve means

Current as of: June, 1999
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53 /   HD   PACKAGE MAKING

266.1  DF  MEANS TO FILL AND CLOSE PREFORMED RECEPTACLE {10}
268  DF  .~ With common fill-close stations {7}
274.~.~ Including closure port valve means

DEFINITION

Classification: 53/274

(under subclass 268) Apparatus including means to seal the closure supplying entrance so as to maintain the system pressure or vacuum.

SEE OR SEARCH CLASS

141, Fluent Material Handling, With Receiver or Receiver Coacting Means,

62, for filling machines of this type having closed diverse fluid containing pressure systems, e.g., vacuum or counter-pressure.