Air-filled cushion or mattress - contains open pored foam filling and has two gas-tight outer surfaces with filler hole

摘要

The air-filled cushion or mattress has two surfaces (10,12) which are impervious to gas. They are stuck or welded together round their edges. The space between the two surfaces is filled with permanently elastic, air permeable material (16) in the form of open pored foam. A hole (14) for letting air in and out has a closure. USE/ADVANTAGE - The air cushion or mattress automatically fills up with air when the hole is opened.