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Wheel end tire air pump

  • US 6,994,136 B2
  • Filed: 05/02/2003
  • Issued: 02/07/2006
  • Est. Priority Date: 05/02/2003
  • Status: Expired due to Term
First Claim
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1. A vehicle wheel end assembly comprising:

  • a non-rotating axle component defining a lateral axis;

    a rotating axle component supported by at least one bearing for rotation relative to said non-rotating axle component about said lateral axis;

    a pump mechanism including a first pump member fixed to said non-rotating axle component and a second pump member mounted for rotation with said rotating axle component wherein said pump mechanism defines a central pump axis that is spaced apart from and parallel to said lateral axis; and

    at least one valve adapted to be in fluid communication with a tire wherein said first pump member drives said second pump member to inflate the tire through said at least one valve when pressure within the tire falls below a predetermined level and wherein a distance between said central pump axis and said lateral axis remains generally constant as said first pump member drives said second pump member.

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