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US 2016/0256880 A1Published application
Pressure washing system with selective fluid injection features
AssigneeKärcher North America, Inc.
InventorsPaul W. Linton, John Philip Fortes
Life of this patent
Estimating the term…
Abstract
A system for pressurizing and dispensing one or more fluids is provided. A chemical or cleaning agent is connected to a high pressure pump to entrain a first volume or flow of fluid with a cleaning agent. The cleaning agent or chemical is applied to the system and flow path of the system at various different locations. Spray guns and washing wands for use with various systems are also provided.
Claims20
A spray gun for dispensing a fluid, the spray gun comprising:
- a first fluid inlet operable to receive a supply of first fluid from a source;
- a first fluid outlet operable to dispense the first fluid from the gun;
- a first fluid conduit extending between the first fluid inlet and the first fluid outlet and at least partially defining a fluid flow path;
- a valve provided in a fluid flow path between the first fluid inlet and the first fluid outlet, the valve being operable to selectively prevent a fluid from exiting the first fluid outlet;
- a first trigger interconnected to and operable to activate the valve;
- a fluid storage container comprising an internal volume, a second fluid inlet and a piston, the piston being operable to apply a pressure to a stored fluid provided within the internal volume and to dispense the stored fluid through the second fluid outlet;
- a second fluid conduit extending from the internal volume and comprising a second fluid outlet, the second fluid outlet provided proximal to the first fluid outlet and operable to dispense the stored fluid into the first fluid after the first fluid has exited the first fluid outlet and such that the stored fluid is entrained with the first fluid to aid in cleaning operations.
4 more elements
A spray gun for dispensing a fluid, the spray gun comprising:
- a first fluid inlet operable to receive a supply of first fluid from a source;
- a first fluid outlet operable to dispense the first fluid from the gun;
- a fluid conduit extending between the first fluid inlet and the first fluid outlet and at least partially defining a fluid flow path;
- a valve provided in a fluid flow path between the first fluid inlet and the first fluid outlet, the valve being operable to selectively prevent a fluid from exiting the first fluid outlet;
- a first trigger interconnected to and operable to activate the valve;
- a fluid storage container secured to the spray gun, the fluid storage container comprising an internal volume, a second fluid inlet, a second fluid outlet, wherein the spray gun is operable to apply a pressure to a stored fluid provided within the internal volume and to dispense the stored fluid through the second fluid outlet;
- wherein the second fluid outlet is operable to selectively dispense a fluid from the fluid storage container to be entrained with the supply of first fluid.
4 more elements
A wand for dispensing a fluid, the wand comprising:
- a first fluid inlet operable to receive a supply of first fluid from a source;
- a first fluid outlet operable to dispense the first fluid from the gun;
- a first fluid conduit extending between the first fluid inlet and the first fluid outlet and at least partially defining a fluid flow path;
- a valve provided in a fluid flow path between the first fluid inlet and the first fluid outlet, the valve being operable to selectively prevent a fluid from exiting the first fluid outlet;
- a first trigger interconnected to and operable to activate the valve;
- a fluid storage container secured to the wand, the fluid storage container comprising an internal volume, a second fluid inlet, a second fluid outlet, and a second fluid conduit extending between the second fluid inlet and the second fluid outlet;
- wherein the second fluid conduit is operable to selectively dispense a fluid from the fluid storage container to be entrained with the supply of first fluid.
4 more elements
Dependencies are inferred from the claim text.