Liquid spray gun, spray gun platform, and spray head assembly

Patent metadata

Field	Value
Publication number	US-10071388-B2
Application number	US-201514933432-A
Country	US
Kind code	B2
Filing date	Nov 5, 2015
Priority date	Jan 26, 2009
Publication date	Sep 11, 2018
Grant date	Sep 11, 2018

Abstract

Liquid spray gun platforms, spray head assemblies and liquid spray guns including one or both of the spray gun platforms and the spray head assemblies are described.

First claim

What is claimed is:

1. A disposable, releasably attachable gravity-fed spray gun spray head assembly comprising
a liquid port ( 94 ) for direct connection to a gravity-fed spray gun paint reservoir;
a liquid nozzle opening ( 92 ) for spraying a liquid;
a liquid inlet passage ( 93 ) in fluid communication with a liquid passageway ( 91 ), the liquid inlet passage and the liquid passageway fluidly connecting the liquid port ( 94 ) to the liquid nozzle opening ( 92 );
a barrel frame comprising a connection tab to assist in connection of the spray head assembly to a gravity-fed spray gun platform, wherein the connection tab comprises a lever element ( 130 ) comprising a projection ( 136 ) extending away from an interior of the barrel frame, wherein the lever element comprises a post ( 139 ) extending outwardly from the lever element to provide a user to place a finger to deflect the lever element to attach or detach the spray head assembly to or from a gravity-fed spray gun platform.

2. The spray head assembly of claim 1 wherein the barrel frame ( 120 ) comprises an inlet end edge ( 121 ) forming a closed perimeter at a barrel inlet.

3. The spray head assembly of claim 2 comprising a gasket ( 111 ) on the inlet edge ( 121 ).

4. The spray head assembly of claim 1 comprising a barrel inlet, wherein the barrel inlet comprises a fan control barrel passage ( 87 ) and a fan control air passage gasket ( 112 ) to provide a seal between the fan control barrel passage ( 87 ) and a fan control air passage outlet in a gravity-fed spray gun platform.

5. The spray head assembly of claim 4 comprising a gasket ( 111 ) on the inlet edge ( 121 ), wherein the gasket ( 111 ) and the fan control air passage gasket ( 112 ) form a unitary seal assembly ( 110 ).

6. The spray head assembly of claim 5 wherein the unitary seal assembly ( 110 ) comprises an elastomeric plastic material.

7. The spray head assembly of claim 1 wherein the barrel frame ( 120 ) comprises an aperture ( 122 ) formed in a barrel wall ( 72 ), wherein the connection tab is at least partially bounded by the aperture.

8. The spray head assembly of claim 1 wherein the connection tab is located within an aperture ( 122 ).

9. The spray head assembly of claim 8 wherein the lever element ( 130 ) is cantilevered within the aperture ( 122 ) such that the lever element comprises a first end connected to the barrel wall.

10. The spray head assembly of claim 1 wherein the lever element comprises a free end ( 131 ) that is not connected to the barrel wall.

11. The spray head assembly of claim 1 further comprising an aperture ( 122 ) and a seal element ( 114 ) provided to close the aperture 122 around the lever element ( 130 ).

12. The spray head assembly of claim 11 comprising a gasket ( 111 ) on an inlet edge ( 121 ), wherein the gasket ( 111 ) and a seal element ( 114 ) form a unitary seal assembly ( 110 ).

13. The spray head assembly of claim 12 comprising a barrel inlet, wherein the barrel inlet comprises a fan control barrel passage ( 87 ) and a fan control air passage gasket ( 112 ) to provide a seal between the fan control barrel passage ( 87 ) and a fan control air passage outlet in a gravity-fed spray gun platform, wherein the fan control air passage gasket ( 112 ), the gasket ( 111 ), the seal element ( 114 ) form a unitary seal assembly ( 110 ).

14. The spray head assembly of claim 11 wherein the unitary seal assembly ( 110 ) comprises an elastomeric plastic material.

15. The spray head assembly of claim 1 wherein the projection is sized and positioned to fit within an appropriate structure on a gravity-fed spray gun platform.

16. The spray head assembly of claim 1 wherein the lever element ( 130 ) comprises a projection ( 136 ) extending away from an interior of the barrel frame, wherein deflection of the post ( 139 ) deflects the projection.

17. The spray head assembly of claim 1 wherein the
liquid inlet passage is configured such that a liquid drawn through the liquid port in use is delivered to the nozzle in the liquid spray head assembly without passing through the gravity fed spray gun platform.

Assignees

• 3M Innovative Properties Co

Inventors

• Escoto Jr John I
• Siltberg Daniel E

Classifications

• B05B7/247

  a liquid being fed by gravity only from the container to the nozzle (B05B7/2478 takes precedence) · CPC title

• B05B7/066 Primary

  with an inner liquid outlet surrounded by at least one annular gas outlet · CPC title

• B05B7/02 Primary

  Spray pistols; Apparatus for discharge (for spraying particulate material B05B7/14; with means for heating the material to be sprayed B05B7/16; with means for supplying fluent material to a discharge device B05B7/24) · CPC title

• B05B7/08

  with separate outlet orifices, e.g. to form parallel jets {, i.e. the axis of the jets being parallel}, to form intersecting jets {, i.e. the axis of the jets converging but not necessarily intersecting at a point} · CPC title

• B05B7/0815

  with at least one gas jet intersecting a jet constituted by a liquid or a mixture containing a liquid for controlling the shape of the latter · CPC title