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Inflation and deflation of a tire in rotation

  • US 4,922,984 A
  • Filed: 07/13/1988
  • Issued: 05/08/1990
  • Est. Priority Date: 07/15/1987
  • Status: Expired due to Fees
First Claim
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1. A device for inflating a rotating tire, comprising:

  • a deformable hose mounted for rotation with a tire, said hose being arranged at least in part substantially along an arc of a circle and coaxial with the tire, said hose having one open end in communication with atmospheric pressure and another open end in communication with a gas pressure of a volume inside the tire;

    means activatable for selectively locally reducing the sectional area of the hose when the tire is mounted on a vehicle, said reducing means being stationary relative to the rotation of the tire; and

    check valve means connected between said another end for said hose and the volume inside the tire for permitting gas flow only from said hose to the volume inside the tire,whereby a rotation of the tire causes a local reduction in the sectional area of said hose to move along the length of said hose and compress air therein when said reducing means is active, the compressed air pressure being transferrable to the volume inside the tire via said another open end.

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