Pressure assisted liquid supply assembly

A method for providing a supply of liquid for a gravity fed liquid spraying device, said method comprising the steps of:

• providing a container of stiff material comprising a side wall having first and second ends, and an end wall extending across the second end of the side wall, the container having an inner surface defining a cavity in the container, and the first end of the side wall defining an opening into the cavity;
• providing a flexible liner having an outer surface corresponding in shape to the inner surface of the container, an inner surface defining a cavity in the liner, and an annular lip positioned along the first end of the side wall of the container when the outer surface of the liner is along the inner surface of the container, said annular lip defining an opening into the cavity in the liner;
• positioning the liner within the cavity in the container;
• pouring the liquid into the cavity in the liner;
• providing an adapter assembly comprising a central portion having a through opening adapted to engage the inlet port of the gravity fed liquid spraying device, a transverse portion including a peripheral part adapted for engagement within the flexible liner adjacent the first end of the container, and means for sealing the flexible liner around the peripheral part of the adapter assembly;
• engaging the adapter assembly with the inlet port of the gravity fed liquid spraying device;
• engaging the peripheral part of the adapter assembly within the flexible liner adjacent the top end of the container;
• securing the flexible liner around the peripheral part of the adapter assembly;
• normally positioning the gravity fed liquid spraying device with the container and the flexible liner above the liquid spraying device;
• and
• supplying air at a pressure above atmospheric pressure between the outer surface of said flexible liner and the inner surface of said container.

A liquid supply assembly for use with a liquid spraying device, the supply assembly comprising:

• a container of stiff material comprising a side wall having top and bottom ends, and a bottom wall extending across the bottom end of said side wall, said container having an inner surface defining a cavity in said container, and said top 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 top 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 being adapted to engage the inlet port of a liquid spraying device, a transverse portion including a peripheral part adapted for engagement within said flexible liner adjacent said top end of said container, and means for sealing the flexible liner around said peripheral part of the adapter assembly, said adapter assembly further including a filter of less than 125 micrometers across the through opening in said adapter assembly;
• 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 or said container.

A liquid supply assembly for use with a liquid spraying device, the supply assembly comprising:

• a container of stiff material comprising a side wall having top and bottom ends, and a bottom wall extending across the bottom end of said side wall, said container having an inner surface defining a cavity in said container, and said top 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 top 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 being adapted to engage the inlet port of a liquid spraying device, a transverse portion including a peripheral part adapted for engagement within said flexible liner adjacent said top end of said container, and means for sealing the flexible liner around said peripheral part of the adapter assembly;
• 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, said air supply assembly comprising an air inlet connector including a first portion attached to the bottom wall of said container and having opening in the cavity of the container, a second portion adapted for engagement with said first portion, means for releasably engaging said first and second portions, and an air line having one end coupled to said second portion and an opposite second end adapted to be engaged with a source of air under pressure.

A liquid supply assembly for use with a liquid spraying device, the supply assembly comprising:

• a container of stiff material comprising a side wall having top and bottom ends, and a bottom wall extending across the bottom end of said side wall, said container having an inner surface defining a cavity in said container, and said top 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 top 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 being adapted to engage the inlet port of a liquid spraying device, a transverse portion including a peripheral part adapted for engagement within said flexible liner adjacent said top end of said container, and means for sealing the flexible liner around said peripheral part of the adapter assembly;
• 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, said air supply assembly being adapted to be connected to an air outlet nipple on the liquid spraying device communicating with a source of air under pressure used to shape a spray stream of liquid from an outlet nozzle on the spraying device.

A method for providing a supply of liquid for a liquid spraying device, said method comprising the steps of:

• providing a container of stiff material comprising a side wall having top and bottom ends, and a bottom wall extending across the bottom end of the side wall, the container having an inner surface defining a cavity in the container, and the top end of the side wall defining an opening into the cavity;
• providing a flexible liner having an outer surface corresponding in shape to the inner surface of the container, an inner surface defining a cavity in the liner, and an annular lip adapted to be positioned along the top end of the side wall of the container when the outer surface of the liner is along the inner surface of the container, said annular lip defining an opening into the cavity in the liner;
• positioning the liner within the cavity in the container;
• pouring the liquid into the cavity in the liner;
• providing an adapter assembly comprising a central portion having a through opening adapted to engage the inlet port of the liquid spraying device, a transverse portion including a peripheral part adapted for engagement within the flexible liner adjacent the top end of the container, and means for sealing the flexible liner around the peripheral part of the adapter assembly;
• engaging the adapter assembly with the inlet port of the liquid spraying device;
• engaging the peripheral part of the adapter assembly within the flexible liner adjacent the top end of the container;
• securing the flexible liner around the peripheral part of the adapter assembly;
• and
• supplying air at a pressure above atmospheric pressure between the outer surface of said flexible liner and the inner surface of said container, said air being supplied from a source of air pressure on said spraying device used to shape a spray stream of liquid from an outlet nozzle on the spraying device, which source of air pressure is supplied only when said spraying device is activated to spray liquid.