US PATENT SUBCLASS 53 / 530
.~.~.~.~ Through restricted passage

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

111 R  DF  WITH CONTENTS TREATING {4}
113  DF  .~ Reshaping {7}
523  DF  .~.~ Compacting or stretching {6}
529  DF  .~.~.~ Compressing before packaging {1}
530.~.~.~.~ Through restricted passage

DEFINITION

Classification: 53/530

Through restricted passage:

(under subclass 529) Apparatus in which the compressive force is applied by moving the contents through a restricted passage.

(1) Note. The shaping of plastic material by extrusion is not herein contained.

SEE OR SEARCH THIS CLASS, SUBCLASS:

439, for methods of simultaneously conveying and compressing.