US PATENT SUBCLASS 152 / 2
.~ With lubrication

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

1  DF  SPRING WHEELS {3}
2.~ With lubrication {2}
3  DF  .~.~> Spring enclosure
4  DF  .~.~> Cylinder and piston

DEFINITION

Classification: 152/2

The spring wheel is combined with devices for lubricating moving parts of the wheel or for oiling to prevent rusting of springs.