US PATENT SUBCLASS 152 / 19
.~.~ Convertible to rigid wheel

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}
19.~.~ Convertible to rigid wheel

DEFINITION

Classification: 152/19

The spring wheel with spring encircling rigid annulus is provided with means to secure said rigid annulus rigidly to the wheel center. This converts the spring wheel into a rigid wheel and is for temporary use when springs are broken.