초록 ▼

A convection blanket for warming persons lying thereon. The preferred embodiment has four layers, two outer insulating layers, and two inner layers of metallic foil. The inner metallic layers minimize heat loss across the length of the blanket. A unique pattern of pinholes in the top layers allows a

A convection blanket for warming persons lying thereon. The preferred embodiment has four layers, two outer insulating layers, and two inner layers of metallic foil. The inner metallic layers minimize heat loss across the length of the blanket. A unique pattern of pinholes in the top layers allows a larger volume of warm air to exit the blanket at the end opposite the air supply hose. All layers are stitched intermittently to avoid distension of the blanket, without defining clear channels, assuring uniform distribution of air within the blanket.

대표청구항 ▼

A device for distributing air about a person comprising: a top layer of insulative material having inner and outer surfaces, and further having a plurality of pinholes therein, said top layer having distal and proximate ends, said pinholes having a larger surface density at said distal end than at s

A device for distributing air about a person comprising: a top layer of insulative material having inner and outer surfaces, and further having a plurality of pinholes therein, said top layer having distal and proximate ends, said pinholes having a larger surface density at said distal end than at said proximate end; and a bottom layer of insulative material having inner and outer surfaces, and further having a shape approximately equal to the shape of said top layer, said inner surface of said bottom layer being sealingly attached to said inner surface of said top layer along the peripheries thereof except along a small portion of said peripheries near said proximate end, forming an inlet port at said proximate end for an air supply, whereby air may be forced between said top and bottom layers, exiting through said pinholes; a first intermediate layer of metallic foil affixed along its entire surface to said inner surface of said top layer, said first intermediate layer having pinholes therein corresponding to pinholes in said top layer; and a second intermediate layer of metallic foil affixed along its entire surface to said inner surface of said bottom layer whereby, when warm air is forced between said first and second intermediate layers, temperature variations of said air along the length of said intermediate layers are minimized; said top and bottom layers being further affixed to one another intemittently along their said inner surfaces, thereby preventing the device from becoming overly distended.