US PATENT SUBCLASS 40 / 498
.~.~.~ Clutch take-up


Current as of: June, 1999
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40 /   HD   CARD, PICTURE, OR SIGN EXHIBITING

446  DF  CHANGING EXHIBITOR {25}
493  DF  .~ Rotatable carrier for display item {7}
497  DF  .~.~ Hinged display item {3}
498.~.~.~ Clutch take-up


DEFINITION

Classification: 40/498

Clutch take-up:

(under subclass 497) Device including means for rotating the carrier in a step-by-step motion to expose the items which means includes (1) a first means for applying torque to the carrier to rotate the carrier about its axis to selected loci, and (2) a second means to then prevent further rotation of the carrier at such loci until such time as the first is again actuated.

(1) Note. See (1) Note under subclass 496 for clutch take-up devices.

SEE OR SEARCH CLASS

74, Machine Element or Mechanism,

813+, for a clutch take-up mechanism per se, which may be used to index a rotary turret.