US PATENT SUBCLASS 152 / 77
.~.~.~.~ With separate annulus guide

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}
69  DF  .~.~ Leaf spring {8}
76  DF  .~.~.~ Center secured {2}
77.~.~.~.~ With separate annulus guide {1}
78  DF  .~.~.~.~.~> Combined drive

DEFINITION

Classification: 152/77

In a spring wheel having a spring encircling rigid annulus supported by center secured leaf springs, said rigid annulus is held against lateral movement relative to the wheel center by means other than the springs. This includes devices which hold the rigid annulus against lateral movement in one direction only.

(1) Note. For similar structure in a pneumatic tire, see this class, subclasses 162-164.