Adjustable-firmness body support and method
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United States of America Patent
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Sep 1, 2015
Grant Date -
Dec 1, 2011
app pub date -
Dec 21, 2009
filing date -
Dec 22, 2008
priority date (Note) -
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Abstract
The present invention provides a body support assembly comprising a layer having a passage, a pump positioned to create a flow of fluid through the passage, a sensor that detects a parameter and produces a signal, and a controller coupled to the sensor and programmed to control the flow of fluid based on the signal. Preferably, the layer comprises visco-elastic foam. In one embodiment, the parameter corresponds with a firmness of the layer (e.g., a temperature of the layer). A heat exchanger can be used to alter (e.g., heat or cool) a temperature of the fluid. The present invention further provides a method of controlling a firmness of a body support comprising sensing a sensed value of a parameter (e.g., temperature) of the body support, establishing a desired value of the parameter, comparing the sensed parameter to the desired value, and adjusting the parameter.
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