US PATENT SUBCLASS 53 / 541
.~.~.~ Building up the stack from the bottom

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

147  DF  GROUP FORMING OF CONTENTS UNIT AND SUBSEQUENT OR FURTHER PACKAGING {5}
531  DF  .~ Layer, stack, or column {10}
540  DF  .~.~ Stacking one article or group of articles upon another {1}
541.~.~.~ Building up the stack from the bottom

DEFINITION

Classification: 53/541

Building up the stack from the bottom:

(under subclass 540) Apparatus for elevating successive contents portions in order to form a stack from below.

SEE OR SEARCH THIS CLASS, SUBCLASS:

242+, for apparatus which deposits articles into the bottom of a receptacle by means of an elevatable mechanism.

537+, for apparatus which form successive layers by means of an elevating mechanism.

SEE OR SEARCH CLASS

414, Material and Article Handling,

794.9+, for apparatus for stacking articles from below.