US PATENT SUBCLASS 226 / 148
.~.~ Unidirectionally rotating roll

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

120  DF  BY INTERMITTENT (INTERRUPTED) MATERIAL-MOVER {13}
147  DF  .~ With retrograde movement preventer {3}
148.~.~ Unidirectionally rotating roll

DEFINITION

Classification: 226/148

(under subclass 147) Device in which the preventing means comprises a roll* incapable of turning in a reverse direction.

SEE OR SEARCH THIS CLASS, SUBCLASS:

156, for a unidirectional (feed) roll not claimed as preventing retrograde motion.