US PATENT SUBCLASS 226 / 175
.~.~ To vary diameter of roll

Current as of: June, 1999
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226 /   HD   ADVANCING MATERIAL OF INDETERMINATE LENGTH

168  DF  BY ORBITALLY TRAVELING MATERIAL-ENGAGING SURFACE(S) {7}
174  DF  .~ With control or adjustment means {5}
175.~.~ To vary diameter of roll

DEFINITION

Classification: 226/175

(under subclass 174) Device wherein the regulating means radially expands or contracts a roll*.