Patent ID: 8261387
Filing Date: 2012-09-11
Classification: A47C,A61G

Abstract:
1. An air-filled mattress, comprising: a plurality of cells, each cell having a low air permeability envelope; a plurality of check valves, each of the check valves serving to permit air flow into a respective group of the cells while preventing air flow from the respective group of cells, each group of cells comprising at least one cell; an inflation structure within each of the cells, the inflation structure being reversibly compressible and tending to expand within the cell therein when unloaded to cause the low air permeability envelope to fill with air through a respective one of the check valves; and a bladder within each of the cells, the bladder completely surrounded by the inflation structure, the bladder within each of the cells having an external port for selective inflation and deflation of the bladder via an external tool.