Lift mechanism for vehicle suspensions
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United States of America Patent
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-
Dec 29, 1998
Issued Date -
N/A
app pub date -
Nov 28, 1997
filing date -
Dec 2, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A suspension system which includes at least one beam, a support spring extending between the vehicle frame and the support beam and a lift spring extending between a lift bracket welded to the beam and the vehicle frame. The support spring is precompressed by using a U-bolt and may be adjusted by increasing or decreasing the length of the U-bolt. Additionally, the spring provides a constant effective force throughout the entire path of travel of the tire-wheel assemblies attached to the axle. While the axle force provided by the spring increases, the force operates through a changing lever arm relative to the pivot point to assure that the spring force operating through the lever arm remains substantially constant throughout the path of travel of the suspension system.
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