US PATENT SUBCLASS 242 / 356.5
.~.~.~ By friction drive

Current as of: June, 1999
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242 /   HD   WINDING, TENSIONING, OR GUIDING

324  DF  UNWINDING AND REWINDING A MACHINE CONVERTIBLE INFORMATION CARRIER (E.G., MAGNETIC TAPE OR PHOTOGRAPHIC FILM) {13}
349  DF  .~ With particular drive {7}
356  DF  .~.~ Alternately or differently driven coils {4}
356.5.~.~.~ By friction drive {2}
356.6  DF  .~.~.~.~> With one-way clutch
356.7  DF  .~.~.~.~> Radially acting wheel, disk, or belt

DEFINITION

Classification: 242/356.5

By friction drive:

(under subclass 356) Subject matter wherein the drive mechanism includes a driving element relying on cohesive force for rotating a driven element connected to rotate the take-up spool.