US PATENT SUBCLASS 152 / 68
.~.~.~.~.~ Anti-creep

Current as of: June, 1999
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152 /   HD   RESILIENT TIRES AND WHEELS

1  DF  SPRING WHEELS {3}
17  DF  .~ Spring encircling rigid annulus {10}
53  DF  .~.~ Pneumatic spring {3}
56  DF  .~.~.~ Annular {4}
67  DF  .~.~.~.~ With drive {1}
68.~.~.~.~.~ Anti-creep

DEFINITION

Classification: 152/68

In a spring wheel having a spring encircling rigid annulus supported by an annular pneumatic spring, with drive, the drive consists of interfitting irregularities of the contacting annular surfaces of the rigid annulus and the annular spring, or of irregularities upon the rigid annulus which indent the spring.