US PATENT SUBCLASS 425 / 322
.~.~ Convoluting means includes a roll

Current as of: June, 1999
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425 /   HD   PLASTIC ARTICLE OR EARTHENWARE SHAPING OR TREATING: APPARATUS

319  DF  MEANS TO FORM PREFORM FROM BULK AND MEANS TO CONVOLUTE OR TWIST THE PREFORM {1}
320  DF  .~ Convoluting means includes an endless surface {2}
322.~.~ Convoluting means includes a roll

DEFINITION

Classification: 425/322

(under subclass 320) Apparatus where the convoluting means includes a roll in direct contact with the material being reshaped.