US PATENT SUBCLASS 49 / 219
.~.~.~.~ Paired sets of crank arms

Current as of: June, 1999
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49 /   HD   MOVABLE OR REMOVABLE CLOSURES

208  DF  MOUNTED FOR MULTIDIRECTIONAL OR OBLIQUE MOVEMENT {7}
209  DF  .~ Initial or terminal movement transverse to sliding movement edgewise of portal {6}
216  DF  .~.~ Moves transversely on link {2}
218  DF  .~.~.~ Crank arm-type link {1}
219.~.~.~.~ Paired sets of crank arms {1}
220  DF  .~.~.~.~.~> Operator interconnected with sets

DEFINITION

Classification: 49/219

(under subclass 218) Device provided with two sets of the crank arms, each set comprising two corresponding crank arms.