Rapid cooling and heating of car seats with massaging effects
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United States of America Patent
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Jun 8, 2010
Grant Date -
Apr 19, 2007
app pub date -
Nov 8, 2006
filing date -
Apr 28, 2004
priority date (Note) -
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Abstract
An apparatus and method for providing controlled heating, cooling and motion, in a device such as an active robotic automobile seat, are disclosed. A shape memory alloy (SMA) element, which changes shape upon application of a temperature change to the SMA element, is coupled to a thermoelectric device. Heat flows through the TED upon application of an electrical current through the TED. The apparatus is operable in one of a plurality of modes. In a first mode, a current is applied through the TED to cause a temperature change in the SMA element to change the shape of the SMA element. In a second mode, a current is applied to the TED to cause heat flow in a space adjacent to the apparatus. By controlling application of current to the TED, controlled motion, heating and cooling are achieved in the seat.
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Family
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