Apparatus for spraying liquids, and adapters and liquid reservoirs suitable for use therewith

A spray gun paint reservoir comprising:

• a thermo-formed plastic liner comprising:
• a base;
• a sidewall;
• an open end;
• a rim at the open end;
• and
• an internal surface;
• the liner being self-supporting, but also being collapsible in use as a paint is withdrawn from the reservoir;
• and
• a lid that is a push-fit in the open end of the liner, the lid comprising:
• an outwardly-extending rim adapted to sit on top of the liner rim;
• a shaped portion that will engage the internal surface of the liner proximate the open end of the liner when the lid is pushed into the open end or the liner;
• a central aperture from which extends a connector tube adapted to connect the reservoir to a compatible spray gun, the central aperture and connector tube forming an outlet for paint from the reservoir;
• and
• a filter mesh covering the central aperture.

A gravity fed spray gun paint reservoir comprising:

• a thermo-formed plastic liner comprising:
• a base;
• a sidewall;
• an open end;
• a rim at the open end;
• and
• an internal surface;
• the liner being self-supporting and capable of standing, unsupported, on its base with the sidewall extended and upright, but also being collapsible in use as a paint is withdrawn from the reservoir;
• and
• a lid that is a push-fit in the open end of the liner, the lid comprising:
• an outwardly-extending rim adapted to sit on top of the liner rim;
• a shaped portion that will engage the internal surface of the liner proximate the open end of the liner when the lid is pushed into the open end or the liner;
• a recess proximate the shaped portion into which the internal surface of the liner can contract so that the lid is securely located on the liner;
• a central aperture in a generally conical upper surface of the lid from which extends a connector tube adapted to connect the reservoir to a compatible gravity fed spray gun, the central aperture and connector tube forming an outlet for paint from the reservoir;
• and
• a filter mesh covering the central aperture.