US PATENT SUBCLASS 242 / 574.2
.~.~.~.~ Mutually pivoted (e.g., lazy tong type)

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}
574.2.~.~.~.~ Mutually pivoted (e.g., lazy tong type)

DEFINITION

Classification: 242/574.2

Mutually pivoted (e.g., lazy tong type):

(under subclass 574) Subject matter wherein the elongated coupling means includes a pair of levers mutually, rotatably joined together near their midportions and separately joined

near their ends to either; (a) the movable input member, or (b) another lever so that axial movement of the input member causes arcuate shifting of the levers in a radial direction to vary a circumferential dimension of the spindle.

SEE OR SEARCH CLASS

74, Machine Element or Mechanism,

521, for a lazy tong lever or linkage element in general use.