Non-linear stiffness roller assembly
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United States of America Patent
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Apr 25, 2017
Grant Date -
Mar 13, 2014
app pub date -
May 27, 2011
filing date -
May 27, 2011
priority date (Note) -
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Abstract
A roller apparatus is provided. The roller apparatus may include a bearing wheel configured to rotatably couple the roller apparatus to a roller shaft, and a resilient member radially disposed about the bearing wheel and configured to contact a guiderail at different magnitudes of loads. The resilient member may include a first section of a first diameter and a second section of a second diameter. The first section may be caused to deflect in response to loads within a first load range, while the second section may be caused to deflect in response to loads within a second load range. The resilient member may exhibit a stepwise increase in stiffness with a gradual increase in load.
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