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Automobile tire pneumatic pressure controlling apparatus

  • US 4,844,138 A
  • Filed: 08/31/1987
  • Issued: 07/04/1989
  • Est. Priority Date: 09/01/1986
  • Status: Expired due to Fees
First Claim
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1. An apparatus for controlling pneumatic pressure of a tire of an automobile, the automobile including an axle shaft, the apparatus comprising:

  • a pressure source;

    a communication passage extending through the axle shaft, said communication passage including first and second passageways, said first passageway being in communication with the automobile tire;

    a coupling means surrounding the axle shaft, said coupling means having a sealing means in sliding contact with said axle shaft, said coupling means fluid-tightly maintaining fluid communication between the pressure source and the second passageway, said second passageway extending substantially radially within the axle shaft and passing through the axle shaft to the coupling means; and

    a valve means disposed on a fluid path betweem said pressure source and the tire.

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