US PATENT SUBCLASS 152 / 33
.~.~.~.~ Annular rubber

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}
29  DF  .~.~ With plural spring types {6}
32  DF  .~.~.~ Rubber and coil {1}
33.~.~.~.~ Annular rubber

DEFINITION

Classification: 152/33

In a spring wheel having a spring encircling rigid annulus supported by plural spring types limited to rubber and coil springs, the rubber spring forms a continuous ring about the wheel center.