US PATENT SUBCLASS 160 / 253
.~.~.~.~ Pulley or drum lift on roller

Current as of: June, 1999
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160 /   HD   FLEXIBLE OR PORTABLE CLOSURE, PARTITION, OR PANEL

238  DF  ROLL TYPE {12}
242  DF  .~ Shiftable position roll {2}
246  DF  .~.~ Straight line non-axial translation in fabric plane only {7}
252  DF  .~.~.~ Strand shifted {5}
253.~.~.~.~ Pulley or drum lift on roller

DEFINITION

Classification: 160/253

(under subclass 252) Roll type devices in which there is a pulley or drum mounted on the roll supporting means which pulley or drum is necessary to the roll translation operation.

SEE OR SEARCH THIS CLASS, SUBCLASS:

254+, for drums not on the roll supporting means.