US PATENT SUBCLASS 152 / 157
.~.~ Enclosed cushion

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

151  DF  TIRES, RESILIENT {14}
155  DF  .~ Cushion and pneumatic combined {4}
157.~.~ Enclosed cushion {1}
158  DF  .~.~.~> Internal buffers

DEFINITION

Classification: 152/157

The cushion tire feature of the combined cushion and pneumatic tire is completely enclosed.

(1) Note. For tires embodying an enclosed cushion, but without the pneumatic feature, see this class, subclass 310 and indented subclasses.