US PATENT SUBCLASS 242 / 574.1
.~.~.~.~ Parallelogram

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

570  DF  COIL HOLDER OR SUPPORT (E.G., SPINDLE, DISPENSER, OR SPOOL) {6}
571  DF  .~ Radially expansible or contractile {8}
572  DF  .~.~ Longitudinally shiftable operator {2}
574  DF  .~.~.~ Shiftable linkage {4}
574.1.~.~.~.~ Parallelogram

DEFINITION

Classification: 242/574.1

Parallelogram:

(under subclass 574) Subject matter wherein the elongated coupling means comprises a pair of links, both of which have opposite ends pivotally connected between parallel base and output elements to establish a quadrilateral so that axial movement of the input element shifts one of the links, base or output elements causing the links to pivot in a radial plane thereby shifting the output element radially while maintaining parallelism between the base and output elements.