US PATENT SUBCLASS 242 / 574.3
.~.~.~.~ Trapezoidal

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}
574.3.~.~.~.~ Trapezoidal

DEFINITION

Classification: 242/574.3

Trapezoidal:

(under subclass 574) Subject matter wherein the elongated coupling means includes a pair of links inclined toward each other, each of which is pivotally connected at one end to an intermediate link and at an opposite end to a spindle component to form a quadrilateral so that movement of the input element causes the intermediate link to move radially.