Sprayer with reverse flush capability
First Claim
Patent Images
1. A method for flushing a paint sprayer having a spray gun with an outlet, said spray gun being attached to a pump and a filter, all having a normal direction of fluid flow and comprising the steps of:
- supplying a cleaning fluid to said spray gun outlet; and
pumping said cleaning fluid from said outlet through said gun and said filter in a direction opposite to said normal direction.
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Accused Products
Abstract
A system for flushing an airless sprayer essentially reverses operation such that the spray gun is immersed in a container of water or other solvent and that fluid is pulled through the pump and flushed through the normal inlet tube. The preferred embodiment attaches a fluid bar to the front of the spray gun to redirect the fluid for flushing. This reverse flushing action allows quicker flushing using less fluid.
17 Citations
9 Claims
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1. A method for flushing a paint sprayer having a spray gun with an outlet, said spray gun being attached to a pump and a filter, all having a normal direction of fluid flow and comprising the steps of:
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supplying a cleaning fluid to said spray gun outlet; and
pumping said cleaning fluid from said outlet through said gun and said filter in a direction opposite to said normal direction. - View Dependent Claims (2, 3)
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4. A method for flushing a paint sprayer having a spray gun having an inlet and an outlet and being attached to a pump having an inlet and an outlet and a filter having an inlet and an outlet, said spray gun, pump and filter all having a normal direction of fluid flow and comprising the steps of:
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supplying said pump inlet with cleaning fluid;
connecting said spray gun outlet to said pump outlet;
connecting said spray gun inlet to said filter outlet; and
pumping said cleaning fluid through said gun and said filter in a direction opposite to said normal direction. - View Dependent Claims (5, 6)
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7. A method for flushing a paint sprayer having a spray gun having an inlet and an outlet and being attached to a pump having an inlet and an outlet and a filter having an inlet and an outlet, said spray gun, pump and filter all having a normal direction of fluid flow and comprising the steps of:
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supplying said gun outlet with cleaning fluid;
connecting said spray gun inlet to said filter outlet;
connecting said pump inlet to said filter inlet; and
pumping said cleaning fluid through said gun and said filter in a direction opposite to said normal direction. - View Dependent Claims (8, 9)
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Specification