초록 ▼

A paint cup adapted to be carried by a spray gun for use with coating materials requiring stirring to prevent separation. A reservoir is closed by a cover member which is mounted on the spray gun and, which in turn, mounts an agitator which projects into the reservoir. The agitator is driven by comp

A paint cup adapted to be carried by a spray gun for use with coating materials requiring stirring to prevent separation. A reservoir is closed by a cover member which is mounted on the spray gun and, which in turn, mounts an agitator which projects into the reservoir. The agitator is driven by compressed air admitted to an impeller housing on the cover member. The reservoir is sealed except for means to introduce air to replace the coating material used in operation, and in this invention the air is introduced primarily through a separate check valve. Discharge ports in the impeller housing are made sufficiently large to assure at least atmospheric pressure in the reservoir. A separate check valve is provided to maintain the pressure within the reservoir at atmospheric pressure while preventing material leakage from the reservoir. The design of the cover assembly and its controls ensures easy flushing of the components with or without disassembly.

대표청구항 ▼

In combination with a hand-held spray gun for spraying paint and other coating materials, a reservoir for said material, aspirator tube means connected to said spray gun and extending to the bottom of said reservoir, a cover assembly mounting said reservoir on said spray gun, said cover assembly inc

In combination with a hand-held spray gun for spraying paint and other coating materials, a reservoir for said material, aspirator tube means connected to said spray gun and extending to the bottom of said reservoir, a cover assembly mounting said reservoir on said spray gun, said cover assembly including an impeller chamber, an agitator shaft mounting said impeller for rotation in said impeller chamber, and a bushing for said shaft in the bottom of said chamber having a bore open into said reservoir, said shaft extending through said bore into said chamber with sufficient clearance to permit limited air flow therethrough, an air line for feeding compressed air to said gun having a branch conduit for admitting compressed air from said line into said impeller chamber, valve means to regulate the air admitted to said chamber, said impeller chamber having discharge ports in an upper wall to afford primary discharge of said compressed air to atmosphere after driving said impeller, said agitator shaft terminating at its lower end in agitator blades adapted to sweep the bottom of said reservoir, said cover assembly including vent means extending through said cover, communicating said reservoir with the atmosphere, and pressure regulating means in said vent means to maintain the pressure within said reservoir to substantially equal the pressure of the atmosphere.