Springs and spring assemblies
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United States of America Patent
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Jan 12, 2016
Grant Date -
Jun 28, 2012
app pub date -
Jun 3, 2010
filing date -
Jul 3, 2009
priority date (Note) -
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Abstract
Various arrangements are disclosed based on springs formed from a plurality of individual resilient arms, including a spring having a substantially planar form in an unloaded state and rotational symmetry of at east order two about a symmetry axis perpendicular to the plane of the spring, the spring comprising: an inner hub and an outer hub, the inner hub being radially inward with respect to the outer hub; a plurality of resilient connecting arms each connected at an inner end to the inner hub and at an outer end to the outer hub, the plurality of resilient connecting arms being configured to provide a restoring force parallel to the symmetry axis when the inner and outer hubs are displaced relative to each other along the symmetry axis; wherein the inner hub, the outer hub and each of the plurality of resilient connecting arms are formed as physically separate elements and are connected to each other during assembly to form the spring.
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