A body support such as a cushion, mattress, chair or the like has at least one inflatable air chamber. A pressure sensor senses interface pressures at different locations on a surface of the air chamber. Indicators derived from the interface pressures indicate the onset of a trend toward bottoming out....http://www.google.com/patents/US7685658?utm_source=gb-gplus-sharePatent US7685658 - Body support apparatus having automatic pressure control and related methods
