US PATENT SUBCLASS 152 / 272
.~.~.~.~.~ Center secured

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}
270  DF  .~.~.~ Leaf {2}
271  DF  .~.~.~.~ Circumferentially extending {2}
272.~.~.~.~.~ Center secured

DEFINITION

Classification: 152/272

The circumferentially extending cushioning springs are leaf springs secured at or adjacent their center. This subclass includes leaf springs which are additionally secured at their ends.

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