# US 9,751,100 B2 · Nozzle tips and spray head assemblies for liquid spray guns

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- Number: US 9,751,100 B2
- Document ID: US9751100B2
- Status: Granted
- Kind: B2
- Application number: 13/984,436
- Filed: 2012-02-08
- Published: 2013-12-12
- Granted: 2017-09-05
- Earliest claimed: 2011-02-09
- Assignees: 3M Innovative Properties Company
- Applicants: Stephen C. P. Joseph; Russell E. Blette; Erik J. Johnson; Arthur V. Lang
- Inventors: Stephen C. P. Joseph; Russell E. Blette; Erik J. Johnson; Arthur V. Lang
- Web page: https://patentgrep.com/patent/US9751100B2

## CPC

- B05B 7/065: {an inner gas outlet being surrounded by an annular adjacent liquid outlet}
- B05B 7/066: {with an inner liquid outlet surrounded by at least one annular gas outlet}
- B05B 7/067: {the liquid outlet being annular}
- B05B 7/0823: {comprising a rotatable spray pattern adjusting plate controlling the flow rate of the spray shaping gas jets}
- B05B 7/083: {comprising rotatable spray shaping gas jet outlets}
- B05B 7/2478: {Gun with a container which, in normal use, is located above the gun}
- B05B: SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES (spray-mixers with nozzles B01F25/72; processes for applying liquids or other fluent materials to surfaces by spraying B05D)

## 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.

## Claims

### Claim 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.

### Claim 2 (depends on 1)

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.

### Claim 3 (depends on 1)

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.

### Claim 4 (depends on 1)

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.

### Claim 5 (depends on 4)

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.

### Claim 6 (depends on 1)

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.