US PATENT SUBCLASS 152 / 36
.~.~.~.~ Annular pneumatic


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}
35  DF  .~.~.~ Pneumatic and coil {1}
36.~.~.~.~ Annular pneumatic


DEFINITION

Classification: 152/36

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