Axle suspension for wheeled vehicles
AssigneeTurner Quick-Lift Corporation
InventorErvin K. Van Denberg
Life of this patent
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Abstract
An axle suspension particularly applicable to trailers includes an elongated, substantially rigid beam, a pneumatic bellows located at one end of the beam, a hanger bracket located at the other end of the beam, an axle connecting means rigidly connected to the beam and axle, and an elastomeric bushing structure located at or near the pivot connection between hanger bracket and beam which has a different degree of deflection beamwise than hangerwise, is sufficiently rigid to provide suspension stability and is sufficiently resilient to allow operative deflections in response to articulations of the suspension to maintain substantially constant the distance between the hanger bracket and the axle connecting means.
Claims24
In an axle suspension system comprising an elongated, substantially rigid beam, a pneumatic bellows located at one end of the beam, a hanger bracket located at the other end of the beam, means for pivotally connecting the hanger bracket to the beam and means for connecting an axle to the beam located intermediate the ends of the beam, the improvement comprising, means for rigidly connecting said axle connecting means to said beam, said axle connecting means being capable of being rigidly connected to the axle thereby forming a rigid axle to beam connection, and an elastic means having a different degree of deflection beamwise than hangerwise, said elastic means being located at a spaced distance from said axle connecting means in the path of articulation forces between the beam and hanger bracket and being sufficiently resilient to allow operative deflections in response to said articulation forces and at the same time restrain longitudinal movement sufficiently to maintain substantially constant the distance between the hanger bracket and the axle connecting means.
Dependencies are inferred from the claim text.