US PATENT SUBCLASS 152 / 38
.~.~.~.~ Center secured leaf

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}
37  DF  .~.~.~ Leaf and coil {2}
38.~.~.~.~ Center secured leaf

DEFINITION

Classification: 152/38

In a spring wheel having a spring encircling rigid annulus supported by leaf and coil springs only the leaf springs have their centers positively secured in fixed relation to the rigid annulus or to the wheel center. This subclass includes leaf springs which are additionally secured at their ends.