Pressure and temperature control system for a cushion to be used by a person circulates gas transferred through one connection tube through cushion in an opposite direction as compared to gas transferred through other connection tube

摘要

A control unit (102) is arranged to transfer pressurized tempered gas alternately through connection tubes (103,104). The gas transferred through one connection tube is circulated through the cushion in an opposite direction as compared to gas transferred through the other connection tube. The gas circulates in the cushion (101) through interconnected channels (105,106). Independent claims are also included for the following: (A) a control unit for cushion; and (B) a cushion.