Elastomeric spring system
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United States of America Patent
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Dec 11, 2001
Grant Date -
N/A
app pub date -
Nov 2, 1999
filing date -
Nov 2, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An elastomeric spring system having non-linear force-deflection characteristics and low rebound is provided. The system comprises a housing and a plurality of first and second spring members movably disposed in alternating relationship within a bore defined by the housing. The first and second spring members are preferably formed from polyurethane such as the two part castable urethanes made from polyether-isocyanate or polyester-isocyanate prepolymers cured with organic diamine or polyol materials. When subject to a force along the axis of deflection, the first spring member is adapted to expand and progressively envelope the second spring members until the hemispherical ends of two of the first spring members meet within the first spring member, thereby causing the force-deflection characteristics of the spring to be nonlinear.
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