US PATENT SUBCLASS 152 / 48
.~.~.~.~ Rigid annulus enclosing

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}
40  DF  .~.~ Rubber spring {4}
47  DF  .~.~.~ Annular {4}
48.~.~.~.~ Rigid annulus enclosing

DEFINITION

Classification: 152/48

The annular rubber spring supporting the spring encircling rigid annulus in the spring wheel completely encloses said rigid annulus either by embedding or by enclosure in an annular chamber.

SEE OR SEARCH THIS CLASS, SUBCLASS:

57, for similar arrangement of an annular pneumatic spring.

251, for similar devices wherein the spring encircling annulus is not rigid.