US PATENT SUBCLASS 152 / 9
.~.~.~ Annular

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

1  DF  SPRING WHEELS {3}
5  DF  .~ Deformable ground engaging part {5}
8  DF  .~.~ With pneumatic spring {1}
9.~.~.~ Annular {1}
10  DF  .~.~.~.~> With air tanks

DEFINITION

Classification: 152/9

The pneumatic spring providing the resiliency of the deformable grounding engaging part of the spring wheel forms a continuous ring about the wheel center.

SEE OR SEARCH THIS CLASS, SUBCLASS:

8, for annular air chambers so combined with cylinders and pistons that the air of the chamber is in direct contact with the piston.