US 4,025,363 AGranted

Spray equipment cleaner

OwnerBenito De Santisinventor

Life of this patent

Estimating the term…

Loading patent…

Abstract

A cleaning system for spray equipment, such as paint spray guns and cups, makes use of a stack-up of containers which operate under pressure. Resting on the ground is a tank for cleaning solvent into which air pressure is introduced when needed. Supported above the tank is a spent-fluid collecting receptacle which in turn supports a cleaning cabinet in which a spray gun and cup are suspended for cleaning. All portions of the system are closed during operation except for a vent in the cabinet in which there is a filter for permitting air to escape and which collects and returns dirty solvent to the portion of the cabinet from which it flows through another filter to the collecting receptacle and from there back to the tank. A system of piping has a three way valve capable of directing air above to the cabinet or a mixture of air and cleaning solvent, or shutting off the supply of both air and cleaning solvent.

Claims14

Dependent claims

A compact cleaning device for spray paint equipment including spray guns and paint cups comprising a tank providing a sealed reservoir for cleaning solvent with a pressure chamber for air above the solvent and including a base at a bottom wall of said tank serving as a support for the device, a collecting receptacle having bottom and side wall portions forming a collecting chamber, and a cabinet comprising bottom, top, and side wall portions providing a closed cleaning chamber having therein a spray gun station and a paint cup station, the bottom wall portion of said cabinet being mounted on and substantially supported by the side wall portion of said collecting receptacle, a return pipe interconnecting the bottom wall portion of the receptacle with the top of the tank, said pipe serving as a support for said receptacle and said cabinet on said tank, and a fluid supply system comprising interconnected pipes and a supply line for air under pressure to said system, said system comprising an air supply valve, a first air pipe line from said valve to said reservoir, a first solvent pipe line from said reservoir to said spray gun station and a second solvent pipe line from said reservoir to said cup station and outflow means for solvent from said cabinet to said tank, said outflow means comprising an open passage through said bottom wall portion of the cabinet to said receptacle and having filter means therein.

Dependencies are inferred from the claim text.