US PATENT SUBCLASS 242 / 333.6
.~.~ Coil rotation sensor

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}
333  DF  .~ Automated stop or reverse {5}
333.6.~.~ Coil rotation sensor {1}
333.7  DF  .~.~.~> Electrical control

DEFINITION

Classification: 242/333.6

Coil rotation sensor:

(under subclass 333) Subject matter wherein the controller includes an input device actuated in response to rotation of either: (a) the supply or take-up coil, or (b) structure (e.g., a drive element) rotatable with one of the coils.