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Central tire inflation system rotary air union

  • US 10,272,728 B2
  • Filed: 12/28/2015
  • Issued: 04/30/2019
  • Est. Priority Date: 02/06/2012
  • Status: Active Grant
First Claim
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1. A central tire inflation system for maintaining tire inflation on a vehicle, the central tire inflation system comprising:

  • an axle plug shaped to cooperatively engage a hollow axle of the vehicle, the axle plug having a bore;

    a flexible torque transfer shaft having an upstream end shaped to cooperatively engage the bore of the axle plug and a downstream end opposite the upstream end, the flexible torque transfer shaft comprising an air conduit extending from the upstream end to the downstream end and an overmolding;

    a rotary air union assembly comprising a stationary shaft and a housing rotatably coupled to the stationary shaft, wherein the flexible torque transfer shaft overmolding couples the flexible torque transfer shaft and the stationary shaft; and

    a fluid flow path contained in the housing of the rotary air union assembly and in fluid communication with the air conduit.

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