US PATENT SUBCLASS 152 / 50
.~.~.~.~ With separate annulus guide

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}
40  DF  .~.~ Rubber spring {4}
47  DF  .~.~.~ Annular {4}
50.~.~.~.~ With separate annulus guide {1}
51  DF  .~.~.~.~.~> Combined drive

DEFINITION

Classification: 152/50

In a spring wheel having a spring encircling rigid annulus supported by an annular rubber spring, said rigid annulus is held against lateral movement relative to the wheel center by means other than said spring. This includes devices which hold the rigid annulus against lateral movement in one direction only.