Patent ID: 6209160
Filing Date: 2001-04-03
Classification: A47C

Abstract:
An inflation assembly comprising an inflatable support member for supporting the body or a limb portion of a person and a container for housing the support member in a deflated state, said inflatable support member having an inflation inlet provided with a one way inlet valve, said container comprising an inner sleeve and an outer sleeve with said inner and outer sleeves each open at a first end and closed at a second end, and nesting within one another to define a pump having an enclosed interior and a one way inflation valve adapted for connection to said inflation inlet on said support member, wherein said one way inflation valve incorporates first and second flexible membranes which act respectively to close off a first opening from said interior to a region exterior to said pump and a second opening from said interior to an outlet of said inflation valve, depending upon whether there are positive or negative pressure conditions respectively within the pump, said inflation valve also incorporating a pressure limiting relief member for ensuring that said support member cannot be inflated by said pump to greater than a predetermined pressure.