US PATENT SUBCLASS 152 / 252
.~.~.~.~ With supporting spring

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

151  DF  TIRES, RESILIENT {14}
246  DF  .~ Cushion {4}
247  DF  .~.~ Metallic springs {4}
251  DF  .~.~.~ Wheel encircling band {2}
252.~.~.~.~ With supporting spring {2}
253  DF  .~.~.~.~.~> Leaf {2}
261  DF  .~.~.~.~.~> Coil {1}

DEFINITION

Classification: 152/252

(under subclass 251) The flexible wheel encircling band of

... is supported by metal springs.

(1) Note. For flexible wheel encircling bands supported by an annular solid rubber element, see this class, subclass 302; for such bands supported by rubber sections, see subclass 303; for such bands described or claimed as armor and supported by an annular solid rubber element or by a pneumatic element, see subclass 185 and indented subclasses; for such bands built into the carcass of a pneumatic tire, see subclass 200.

(2) Note. For rigid wheel encircling bands supported by metal, rubber, or pneumatic resilient elements, or enclosed by or embedded within a pneumatic tire construction, see this class, subclass 17 and indented subclasses, even though the device is built into the form and semblance of a tire.

(3) Note. A thin flat metallic band spaced from the rim of a conventional wheel is assumed to be flexible, in the absence of positive evidence that it is rigid.