Independent paddle lift axle suspension system
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United States of America Patent
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Apr 26, 2005
Grant Date -
Aug 26, 2004
app pub date -
Feb 26, 2003
filing date -
Feb 26, 2003
priority date (Note) -
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Abstract
An auxiliary lift axle suspension of the parallelogram type is constructed for heavy duty operation by providing longitudinal control arms at the corners of a parallelogram configuration extending between the axle connecting member and the frame hanger bracket. A lift bellows is then located between two opposing rigidity providing, U-shaped members (called paddles or stabilizer members) located within the three dimensional parallelogram space, wherein the legs of one U-shaped member are connected to the axle connecting member and the legs of the opposing U-shaped member are connected to the hanger bracket, such that the lift bellows is located between the bases of the opposing paddles and expands bi-directionally to lift the wheels of the suspension from the road surface.
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