Patent ID: 8127386
Filing Date: 2012-03-06
Classification: A61G

Abstract:
1. An air mattress, comprising: a plurality of levels of air mattress layers which are vertically stacked, wherein in each of the levels of air mattress layers, flexible hollow air cells each extending along a width of the air mattress are arranged in parallel with each other in a longitudinal direction of the air mattress, the plurality of levels of air mattress layers include an upper air mattress layer and a lower air mattress layer, the air cells in each of the upper and lower air mattress layers are divided into a plurality of groups such that the air cells are expanded or contracted in units of the groups by supplying or discharging air to/from the air cells in units of the groups, and each of the air cells in the upper air mattress layer has a width smaller than that of each of the air cells in the lower air mattress layer.