Patent ID: 6953155

Claim:
In combination, a gravity fed liquid spraying device having an inlet port: and a liquid supply assembly comprising: a container of stiff material comprising a side wall having first and second ends, and an end wall extending across the second end of said side wall, said container having an inner surface defining a cavity in said container, and said first end of said side wall defining an opening into said cavity; a flexible liner within the cavity in said container, said liner having an outer surface corresponding in shape to the inner surface of said container, an inner surface defining a cavity in said liner, and an annular lip along the first end of said side wall defining an opening into the cavity in said liner; an adapter assembly comprising a central portion having a through opening and engaging the inlet port of the liquid spraying device, a transverse portion including a peripheral part engaged within said flexible liner adjacent said first end of said container, and means for sealing the flexible liner around said peripheral part of the adapter assembly, said adapter assembly normally positioning said container and said flexible liner above said liquid spraying device; and an air supply assembly connected to said container for supplying air under pressure between the outer surface of said flexible liner and the inner surface of said container.