Nozzle tips and spray head assemblies for liquid spray guns

Patent metadata

Field	Value
Publication number	US-9751100-B2
Application number	US-201213984436-A
Country	US
Kind code	B2
Filing date	Feb 8, 2012
Priority date	Feb 9, 2011
Publication date	Sep 5, 2017
Grant date	Sep 5, 2017

Abstract

Removable nozzle tips, spray head assemblies including the nozzle tips and liquid spray guns that include the nozzle tips are described herein. The removable nozzle tips provide and define both the liquid nozzle openings and the center air outlets for the center air of the liquid spray guns and the spray head assemblies. The nozzle tips are removably attached over a liquid nozzle port formed in the spray head assembly and/or on the spray gun platform or body using any suitable attachment mechanism. The removable nozzle tips can be removed from the liquid spray gun or the spray head assembly without disturbing the remainder of the spray gun or the spray head assembly.

First claim

What is claimed is:

1. An integral, one-piece nozzle tip for a spray gun having an air cap, the integral one-piece nozzle tip comprising a spray axis;
a nozzle body comprising a nozzle outlet end and a liquid nozzle opening surrounding the spray axis;
a flange attached to the nozzle body by a support member, the flange comprising a flange outer edge a flange aperture surrounding the spray axis and surrounding the nozzle outlet end such that a center air outlet is defined between the flange aperture and the nozzle outlet end, the center air outlet and the liquid nozzle opening being fixed in relation to one another about the spray axis, wherein the integral, one-piece nozzle tip is adapted for installation at a nozzle tip opening of the air cap of the spray gun such that the flange outer edge provides a seal at an interface with an inner edge of the nozzle tip opening of the air cap to restrict air from exiting the interface, such that a center air flow is preferentially directed through the center air outlet to exit the spray gun.

2. The nozzle tip of claim 1 wherein the nozzle outlet end comprises a cylinder and the flange aperture is circular, such that the center air outlet is an annulus, the center air outlet and the liquid nozzle opening being fixed in concentric relation to one another about the spray axis.

3. A kit comprising the nozzle tip of claim 1 , wherein the kit further comprises a plurality of the nozzle tips, and wherein at least two nozzle tips of the plurality of nozzle tips comprise center air outlets having different dimensions.

4. A kit comprising the nozzle tip of claim 1 , wherein the kit further comprises a plurality of the nozzle tips, and wherein at least two nozzle tips of the plurality of nozzle tips comprise liquid nozzle openings having different dimensions.

5. A kit according to claim 4 , wherein each nozzle tip of the plurality of nozzle tips comprises a threaded connection at the inlet end of the nozzle body.

6. A kit comprising the nozzle tip of claim 1 , wherein the kit further comprises a plurality of the nozzle tips, and wherein at least two nozzle tips of the plurality of nozzle tips comprise liquid nozzle openings having different dimensions and center air outlets having different dimensions.

Assignees

• Joseph Stephen C P
• Blette Russell E
• Johnson Erik J
• Lang Arthur V
• 3M Innovative Properties Co

Inventors

• Joseph Stephen C P
• Blette Russell E
• Johnson Erik J
• Lang Arthur V

Classifications

• B05B7/067

  the liquid outlet being annular · CPC title

• B05B7/0823

  comprising a rotatable spray pattern adjusting plate controlling the flow rate of the spray shaping gas jets · CPC title

• B05B7/065 Primary

  an inner gas outlet being surrounded by an annular adjacent liquid outlet · CPC title

• B05B7/2478

  Gun with a container which, in normal use, is located above the gun · CPC title

• B05B7/083

  comprising rotatable spray shaping gas jet outlets · CPC title