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US 12,687,250 B2Granted
Quick connect for a spray system
AssigneeGraco Minnesota Inc.
InventorChristopher C. Wagner
Life of this patent
Estimating the term…
Abstract
A hose is connected to a spray gun or a pressurized fluid source by a quick connect coupler. The quick connect coupler can be integrated with the hose to form a hose assembly or can be integrated with a spray gun or pump. The quick connect coupler includes an internal piston that is pressure biased into sealing engagement with a fitting connected to the quick connect coupler.
Claims20
A hose assembly configured to convey pressurized fluid in a spray system, the hose assembly comprising:
- a flexible hose;
- and
- a quick connect coupler mechanically and fluidly connected to the hose, the quick connect coupler comprising:
- a coupler body having a mount end and a distal end, the mount end configured to interface with a fitting;
- a hose connector extending out of the coupler body through the distal end of the coupler body, the hose connector disposed at least partially within the flexible hose;
- a piston disposed within the coupler body, the piston having a piston body, a piston passage extending fully through the piston body along a coupler axis, a first seal groove formed on the piston body, and a second seal groove formed on the piston body;
- a first piston seal mounted in the first seal groove, the first piston seal engaging the coupler body and the piston;
- and
- a second piston seal mounted in the second seal groove, the second piston seal extending axially beyond the piston body and oriented towards the mount end;
- wherein the piston is movable along the coupler axis relative to the coupler body.
7 more elements
A spray gun comprising:
- a gun body supporting a nozzle;
- a fluid flowpath at least partially disposed within the gun body, the fluid flowpath configured to convey a pressurized fluid to the nozzle;
- and
- a quick connect coupler supported by the gun body and configured to mechanically and fluidly connect a hose assembly to the spray gun, the quick connect coupler comprising:
- a coupler body having a mount end and a distal end, the mount end configured to interface with a fitting of the hose assembly;
- a piston disposed within the coupler body, the piston having a piston body, a piston passage extending fully through the piston body along a coupler axis, a first seal groove formed on the piston body, and a second seal groove formed on the piston body;
- a first piston seal mounted in the first seal groove, the first piston seal engaging the coupler body and the piston;
- and
- a second piston seal mounted in the second seal groove, the second piston seal extending axially beyond the piston body and oriented towards the mount end;
- wherein the piston is movable along the coupler axis relative to the coupler body.
7 more elements
Dependencies are inferred from the claim text.