US PATENT SUBCLASS 152 / 56
.~.~.~ Annular

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}
53  DF  .~.~ Pneumatic spring {3}
56.~.~.~ Annular {4}
57  DF  .~.~.~.~> Rigid annulus enclosing
58  DF  .~.~.~.~> Plural
59  DF  .~.~.~.~> With separate annulus guide {1}
67  DF  .~.~.~.~> With drive {1}

DEFINITION

Classification: 152/56

The pneumatic spring supporting the spring encircling rigid annulus in the spring wheel forms a continuous ring about the wheel center.

SEE OR SEARCH THIS CLASS, SUBCLASS:

60, 67 for such structure wherein the pneumatic spring is fixed to the rigid annulus, thereby forming a positive driving connection through the spring.

159, 161, for similar structure in a pneumatic tire.

55, for annular chambers combined with cylinders and pistons.