APPLICATIONS OF SHAPE MEMORY POLYMERS ON AN INPUT DEVICE
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United States of America Patent
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Issued Date -
Nov 17, 2016
app pub date -
May 15, 2015
filing date -
May 15, 2015
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Abstract
An input device including a housing, a cover plate, and a shape-memory polymer (SMP) disposed between the cover plate and the housing. The SMP being a rectangular flat lattice structure formed into a cylinder, the cylinder having a top portion and a bottom portion, where the top portion is coupled to the cover plate, and where the bottom portion is coupled to the housing. The SMP can be conformable at temperatures at or above a threshold value, and non-conformable at temperatures below the threshold value. The input device can include a heating element coupled to the SMP and configured to control the temperature of the SMP. The SMP can be comprised of a conductive ink formed of a density of conductive particulates, an etched conductor structure on a non-conductive substrate, or a conductive and stretchable yarn formed into a coil.
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