US PATENT SUBCLASS 152 / 521
.~.~.~ Internal lubricating or cooling

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

151  DF  TIRES, RESILIENT {14}
450  DF  .~ Pneumatic tire or inner tube {23}
516  DF  .~.~ With means enabling restricted operation in damaged or deflated condition {5}
521.~.~.~ Internal lubricating or cooling

DEFINITION

Classification: 152/521

Internal lubricating or cooling:

(under subclass 516) Subject matter wherein the support means which enables restricted operation of the tire in a damaged or deflated condition comprises a lubricating or cooling composition which is disposed in the pneumatic tire chamber.

SEE OR SEARCH THIS CLASS, SUBCLASS:

503+, for sealant compositions that may also possess cooling or lubricating properties.