SPRING WITH VARIABLE RESISTANCE AND MATTRESSES INCLUDING THE SAME
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United States of America Patent
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Issued Date -
Sep 8, 2016
app pub date -
Mar 3, 2015
filing date -
Mar 3, 2015
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Abandoned
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Abstract
A spring provides variable (non-linear) resistance as the spring is compressed. The spring comprises a plurality of spring elements that are stacked atop one another, each spring element comprising a upper member and a lower member connected to the upper member, each spring element defining an internal space between the upper member and the lower member, and each spring element configured to compress when a force is applied to the spring, such that the upper member moves toward the lower member. The spring further comprises one or more spring stops positioned in the internal space defined by on one or more of the plurality of spring elements, each spring stop being configured to prevent the respective spring element from compressing past a predetermined compression distance. A mattress is further provided and includes multiple such springs arranged in a matrix.
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