US PATENT SUBCLASS 152 / 516
.~.~ With means enabling restricted operation in damaged or deflated condition

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.~.~ With means enabling restricted operation in damaged or deflated condition {5}
517  DF  .~.~.~> With sidewall insert to facilitate load support in emergency
518  DF  .~.~.~> Utilizing additional inflatable supports which become load bearing in emergency {1}
520  DF  .~.~.~> Utilizing additional noninflatable supports which become load supporting in emergency
521  DF  .~.~.~> Internal lubricating or cooling
522  DF  .~.~.~> Means facilitating folding between sidewall portions (e.g., run flat sidewalls)

DEFINITION

Classification: 152/516

With means enabling restricted operation in damaged or deflated condition:

(under subclass 450) Subject matter wherein the pneumatic tire or inner tube is provided with means which permit the resultant assembly to continue operation when the inflation pressure in the pneumatic tire or inner tube drops substantially below normal or when the pneumatic tire or inner tube is punctured or otherwise damaged.

(1) Note. The means referred to herein are often called "run flat" devices in the art. The means may be an integral part of the pneumatic tire, located within the pneumatic tire cavity or external to the pneumatic tire.

SEE OR SEARCH THIS CLASS, SUBCLASS:

152, for temporary replacement tires and 158 for internal buffers which assume load when the pneumatic tire is deflated or distorted beyond the normal amount.

SEE OR SEARCH CLASS

73, Measuring and Testing,

45.6, 45.7, 48, 49, and 146 - 146.8 for means to measure tire pressure and detect loss of tire pressure. 116, Signals and Indicators,

34+, for tire inflation or deflation indicators.

137, Fluid Handling,

227+, for tire pressure gauges or indicator means.

340, Communications: Electrical,

442+, for tire deflation signal systems.