US PATENT SUBCLASS 152 / 248
.~.~.~ Tubular

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

151  DF  TIRES, RESILIENT {14}
246  DF  .~ Cushion {4}
247  DF  .~.~ Metallic springs {4}
248.~.~.~ Tubular {2}
249  DF  .~.~.~.~> Integral
250  DF  .~.~.~.~> Woven

DEFINITION

Classification: 152/248

The springs consist of one or more tubular annuli extending about the wheel. These may be sectional. The tube as a whole may have apertures or slots or notches therein.