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US 11,167,298 B2Granted
Spray gun barrel with inseparable nozzle
Assignee3M Innovative Properties Company
InventorsBrian E. Duncan, Stephen C. P. Joseph
Life of this patent
Estimating the term…
Abstract
A barrel for use with a liquid spray gun platform to provide a liquid spray gun comprises a main body and an inseparable nozzle. The main body comprises at least one center air delivery passage and at least one liquid-handling passage. The inseparable nozzle defines a liquid-emitting orifice that is in fluid communication with the at least on liquid-handling passage of the main body, and defines a center air orifice that is in fluid communication with the at least on center air delivery passage of the main body.
Claims23
A barrel for use with a liquid spray gun platform to provide a liquid spray gun, comprising:
- a main body comprising at least one center air delivery passage and at least one liquid-handling passage;
- and,
- an inseparable nozzle comprising
- an annular tip that defines a liquid-emitting orifice that is in fluid communication with the at least one liquid-handling passage of the main body,
- a flange at least a portion of which is radially outwardly separated from the annular tip in a direction orthogonal to an axis of liquid flow and completely surrounds the annular tip so that an annular center air orifice is defined between an outward facing surface of the annular tip and an inward facing surface of the flange, the center air orifice being in fluid communication with the at least one center air delivery passage of the main body;
- wherein the center air orifice is defined only by surfaces of the inseparable nozzle,
- wherein air and liquid exit the liquid spray gun at the center air orifice and liquid-emitting orifice, respectively,
- wherein air emerging from the center air orifice atomizes liquid emerging from the liquid-emitting orifice, and
- wherein the barrel is releasably attachable to the liquid spray gun platform by way of one or more attachment structures such that a user in the field can release the barrel from the liquid spray gun platform.
6 more elements
A method of spraying liquid, the method comprising
- providing a liquid spray gun comprising:
- a barrel attachable to a liquid spray gun platform, the barrel comprising:
- a main body comprising at least one center air delivery passage and at least one liquid-handling passage;
- and,
- an inseparable nozzle comprising
- an annular tip that defines a liquid-emitting orifice that is in fluid communication with the at least one liquid-handling passage of the main body,
- a flange at least a portion of which is radially outwardly separated from the annular tip in a direction orthogonal to an axis of liquid flow that completely surrounds the annular tip so that an annular center air orifice is defined between an outward facing surface of the annular tip and an inward facing surface of the flange, the center air orifice being in fluid communication with the at least one center air delivery passage of the main body;
- wherein the center air orifice is defined only by surfaces of the inseparable nozzle,
- wherein air and liquid exit the liquid spray gun at the center air orifice and liquid-emitting orifice, respectively,
- wherein air emerging from the center air orifice atomizes liquid emerging from the liquid-emitting orifice;
- a trigger and a needle;
- and
- applying pressure to the trigger to retract the needle such that a liquid is allowed to flow through the liquid-handling passage and out of the liquid-emitting orifice to spray the liquid.
10 more elements
A barrel for use with a liquid spray gun platform, comprising:
- a main body comprising at least one center air delivery passage and at least one liquid-handling passage;
- and,
- an inseparable nozzle comprising
- an annular tip that defines a liquid-emitting orifice that is in fluid communication with the at least one liquid-handling passage of the main body,
- a flange at least a portion of which is radially outwardly separated from the annular tip in a direction orthogonal to an axis of liquid flow and a rim extending from the flange, the rim completely surrounds the annular tip so that an annular center air orifice is defined between an outward facing surface of the annular tip and an inward facing surface of the rim, the center air orifice being in fluid communication with the at least one center air delivery passage of the main body;
- wherein the center air orifice is defined only by surfaces of the inseparable nozzle,
- wherein air and liquid exit the liquid spray gun at the center air orifice and liquid-emitting orifice, respectively,
- wherein air emerging from the center air orifice atomizes liquid emerging from the liquid-emitting orifice.
5 more elements
A kit, comprising:
- a barrel attachable to a liquid spray gun platform, the barrel comprising:
- a main body comprising at least one center air delivery passage and at least one liquid-handling passage;
- and,
- an inseparable nozzle comprising
- an annular tip that defines a liquid-emitting orifice that is in fluid communication with the at least one liquid-handling passage of the main body,
- a flange at least a portion of which is radially outwardly separated from the annular tip in a direction orthogonal to an axis of liquid flow that completely surrounds the annular tip so that an annular center air orifice is defined between an outward facing surface of the annular tip and an inward facing surface of the flange, the center air orifice being in fluid communication with the at least one center air delivery passage of the main body;
- wherein the center air orifice is defined only by surfaces of the inseparable nozzle,
- wherein air and liquid exit the liquid spray gun at the center air orifice and liquid-emitting orifice, respectively,
- wherein air emerging from the center air orifice atomizes liquid emerging from the liquid-emitting orifice;
- an air cap that is attachable to the barrel and that comprises at least two air horns that project forward past the liquid-emitting orifice of the barrel and that collectively comprise apertures at least some of which are located on opposite sides of an axis generally aligned with a direction of liquid flow through the liquid-emitting orifice of the barrel.
7 more elements
Dependencies are inferred from the claim text.