US PATENT SUBCLASS 464 / 66
.~.~.~ Opposite ends of spring are equidistant from rotational axis

Current as of: June, 1999
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464 /   HD   ROTARY SHAFTS, GUDGEONS, HOUSINGS, AND FLEXIBLE COUPLINGS FOR ROTARY SHAFTS

51  DF  TORQUE TRANSMITTED VIA FLEXIBLE ELEMENT {16}
61  DF  .~ Element is a spring coiled about centerline angularly related to or radially spaced from rotational axis {1}
62  DF  .~.~ Plural springs {4}
66.~.~.~ Opposite ends of spring are equidistant from rotational axis {2}
67  DF  .~.~.~.~> Springs on circumferentially extending curved centerline
68  DF  .~.~.~.~> Springs positioned between axially spaced plates of one member and driven by other member extending radially between said plates

DEFINITION

Classification: 464/66

Opposite ends of springs are equidistant from rotational axis:

(under subclass 62) Subject matter wherein the distance on a radial line extending from the rotational axis to the centerline of the element at one end of the element is the same as the distance on a radial line extending from the rotational axis to the centerline of the element at the opposite end of the element.