Easy-to-clean spray gun, accessories therefor, and mounting and dismounting methods

Patent metadata

Field	Value
Publication number	US-10189037-B2
Application number	US-201214113649-A
Country	US
Kind code	B2
Filing date	May 5, 2012
Priority date	Jun 30, 2011
Publication date	Jan 29, 2019
Grant date	Jan 29, 2019

Abstract

A spray gun includes a one-piece main body, a trigger, a paint needle operating element coupled to the trigger, a paint needle coupled to the paint needle operating element, and an exchangeable spray agent guiding unit, the inlet region of which is or can be connected to a material supply device for the material to be sprayed, wherein the main body has at least one opening for receiving the exchangeable spray agent directing unit. Also disclosed is a material supply device, a cover, a method for mounting an exchangeable spray agent guiding unit in or on a spray gun having a one-piece main body, and a method for removing an exchangeable spray agent directing unit from or out of a one-piece spray gun.

First claim

The invention claimed is:

1. A spray gun usable with a material supply device, the spray gun having a spray medium outlet, and further comprising:
a body including a recess proximate the spray medium outlet, the recess located on an upper side of the body, the recess forming an opening that does not face a spraying direction at a forward end of the body;
a trigger;
a paint needle-actuating element that is separate from the trigger and is coupled to the trigger, the paint needle-actuating element positioned within the body to form a part of the body;
an exchangeable paint medium guide unit sized and dimensioned to be inserted into the body recess through the opening in the body;
a paint needle that is moveably contained within the guide unit to form a part of the guide unit;
the needle-actuating element moveable along a longitudinal axis of the paint needle-actuating element that is at least one of parallel and coaxial to an axis of movement of the needle, the paint needle-actuating element releaseably connected to the paint needle by a coupling formed between an end of the paint needle and an end of the paint needle-actuating element, the coupling formed from a receptacle on one of the paint needle-actuating element and needle, and a ball on the other of the paint needle-actuating element and needle.

2. The spray gun according to claim 1 , wherein the recess is situated on an upper side of the base body.

3. The spray gun according to claim 2 , wherein the recess extends from a spray medium inlet to the spray medium outlet of the base body.

4. The spray gun according to claim 3 , wherein the recess is at least partially opened on a side that faces away from the spray medium outlet.

5. The spray gun according to claim 1 , wherein the recess includes first and second concave walls which extend less than 180° around the recess, preferably between 100° and 179° around the recess.

6. The spray gun according to claim 1 , wherein the recess is configured and dimensioned such that the exchangeable spray medium guide unit can be arranged in or on the recess by a positive fit, a taper or a restraint.

7. The spray gun according to claim 1 , wherein the exchangeable spray medium guide unit can be radially or axially fixed in or on the recess by at least one contact region or of at least one element.

8. The spray gun according to claim 7 , wherein the at least one element features a shoulder, a ring, a cone, a web, a hook and/or an eyelet.

9. The spray gun according to claim 8 , wherein the at least one element is arranged on the exchangeable spray medium guide unit or on the base body.

10. The spray gun according to claim 9 , wherein the at least one element is arranged on the exchangeable spray medium guide unit and a counter element is arranged on the base body.

11. The spray gun according to claim 1 , wherein the base body has one or more compressed air conduits which extend in at least one part of the base body spaced a distance from the recess.

12. The spray gun according to claim 1 , wherein the exchangeable spray medium guide unit can be locked on or in the base body with the aid of at least one fixing means.

13. The spray gun according to claim 12 , wherein the at least one fixing means includes a catch mechanism.

14. The spray gun according to claim 1 , wherein a nozzle is arranged or can be arranged on the exchangeable spray medium guide unit in a separable or inseparable fashion.

15. The spray gun according to claim 1 , wherein the exchangeable spray medium guide unit includes a first component that can be placed into the base body or arranged thereon in the region of the spray medium outlet, and a second component that can be placed into the base body or arranged thereon in the region of the spray medium inlet.

16. The spray gun according to claim 1 , wherein at least one sealing means is arranged or can be arranged in a connecting region of the exchangeable spray medium guide unit.

17. The spray gun according to claim 1 , wherein the exchangeable spray medium guide unit extends beyond the recess in the region of the spray medium outlet or in the region of the spray medium inlet of the base body.

18. The spray gun according to claim 1 , wherein the exchangeable spray medium guide unit ends before the recess or flush therewith in the region of the spray medium outlet or in the region of the spray medium inlet of the base body.

19. A material supply device, wherein the material supply device is attachable to a spray gun according to claim 1 and/or to an exchangeable spray medium guide unit arrangeable in or on the spray gun.

20. The spray gun of claim 1 , the paint needle pressable against the spray medium outlet when the exchangeable spray medium guide unit is connected to the material supply device and not inserted into the spray gun, to thereby close the material supply device.

21. The spray gun of claim 1 , wherein the spray gun includes a spring and a stopper connected to the paint needle-actuating element, the spring and the stopper configured to move the paint needle-actuating element to thereby press the paint needle into an outlet of an air nozzle when the trigger is not actuated.

22. A spray gun usable with a material supply device, the spray gun having a spray medium outlet and further comprising:
a base spray gun body including a recess proximate the spray medium outlet;
a trigger;
a paint needle-actuating element that is separate from the trigger and is connected to form part of the body and is movable within the body along a longitudinal axis of the paint needle-actuating element, the longitudinal axis being at least one of parallel and coaxial to an axis of movement of the needle, in response to movement of the trigger;
a removable spray medium guide unit having an inlet region which is connectable to the material supply device, a portion of the guide unit sized and dimensioned to be removably insertable into the spray gun body recess along a direction of insertion;
a paint needle disposed within and forming a part of the removable spray medium guide unit; and
a paint needle coupling having a first portion connected to the paint needle and a second portion connected to the paint needle-actuating element, one of the first and second portions having a receptacle opening facing the direction of insertion into which one of a ball or a prism shape of the other of the first and second portions is inserted during movement of the spray medium guide unit into the spray gun body, the first and second portions thereby mateably connectable to releasably couple and decouple the paint needle and the paint needle-actuating element, without a requirement of opening the base spray gun body.

23. The spray gun of claim 22 , wherein the recess forms a curved non-linear path, and the guide unit has a curved non-linear shape conforming to the curved non-linear path.

24. The spray gun of claim 22 , wherein the guide unit includes an elastically deformable catch surface, and the recess includes a surface mateable with the catch surface to releasably retain the guide unit in the recess.

Assignees

• Schmon Ewald
• Dettlaff Peter
• Brose Jens
• Sata Gmbh & Co Kg

Inventors

• Schmon Ewald
• Dettlaff Peter
• Brose Jens

Classifications

• 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

• Y10T29/494

  Fluidic or fluid actuated device making · CPC title

• B05B7/066

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

• B05B7/1218

  With means for adjusting or modifying the action of the controlling means · CPC title

• B05B9/01 Primary

  Spray pistols, {discharge devices}(B05B9/03 takes precedence) · CPC title