Airbrush and method of making an airbrush

1. An apparatus for spraying an atomized liquid, comprising:

a substantially cylindrical, hollow casing comprising an inlet and an outlet, the inlet being adapted to receive an airflow, the outlet comprising a nozzle having an aperture;

a liquid cartridge associated with the hollow casing and arranged within a rotational protection of the casing; and

a tube with a tip and a source end communicating with the liquid cartridge, the tip of the tube positioned in a region on a side of the nozzle outside of an interior of the hollow casing, the tube adapted to draw a liquid out of the liquid cartridge.

2. The apparatus of claim 1 , wherein the airflow received into the inlet passes through the hollow casing, passes out of the nozzle, creates a low pressure in the region, draws the liquid out of the tip of the tube, and atomizes the liquid.

3. The apparatus of claim 2 , wherein the drawing of the liquid out of the tip of the liquid cartridge by the low pressure region is caused by a venturi effect.

4. The apparatus of claim 1 , further comprising an arrangement for attaching the liquid cartridge to the hollow casing.

5. The apparatus of claim 1 , wherein at least one of the hollow casing and the liquid cartridge comprises plastic.

6. The apparatus of claim 1 , wherein the aperture of the nozzle is one of equal to and slightly larger than the tip of the tube.

7. The apparatus of claim 1 , wherein the tip comprises a short tube with a constricted throat.

8. The apparatus of claim 1 , wherein the inlet is adapted to receive the airflow directly from a human mouth.

9. The apparatus of claim 1 , wherein the inlet is adapted to receive the airflow from a flexible tube.

10. An apparatus for spraying an atomized liquid, comprising:

a hollow casing comprising an inlet and an outlet, the inlet being adapted to receive an airflow, the outlet comprising a nozzle having an aperture;

a liquid cartridge associated with the hollow casing;

a tube with a tip and a source end communicating with the liquid cartridge, the tip of the tube positioned in a region on a side of the nozzle outside of an interior of the hollow casing, the tube adapted to draw a liquid out of the liquid cartridge; and

an arrangement for attaching the liquid cartridge to the hollow casing;

wherein the arrangement for attaching the liquid cartridge to the hollow casing comprises a welding of two halves of the casing into a single unit, the two halves sandwiching a plurality of anchors of the cartridge, the anchors extending into the interior of the hollow casing, the cartridge being arranged flush to an exterior of the hollow casing.

11. The apparatus of claim 10 wherein the welding comprises an ultrasonic welding of the two halves of the hollow casing to each other.

12. An apparatus for spraying an atomized liquid, comprising:

a hollow casing comprising an inlet and an outlet, the inlet being adapted to receive an airflow, the outlet comprising a nozzle having an aperture;

a liquid cartridge associated with the hollow casing; and

a tube with a tip and a source end communicating with the liquid cartridge, the tip of the tube positioned in a region on a side of the nozzle outside of an interior of the hollow casing, the tube adapted to draw a liquid out of the liquid cartridge;

wherein the tip is arranged perpendicular to the flow of air in the region.

13. An apparatus for spraying an atomized liquid, comprising:

a hollow casing comprising an inlet and an outlet, the inlet being adapted to receive an airflow, the outlet comprising a nozzle having an aperture;

a liquid cartridge associated with the hollow casing; and

a tube with a tip and a source end communicating with the liquid cartridge, the tip of the tube positioned in a region on a side of the nozzle outside of an interior of the hollow casing, the tube adapted to draw a liquid out of the liquid cartridge;

wherein the liquid cartridge comprises an air inlet arranged on the liquid cartridge opposite the source end of the tube.

14. An apparatus for spraying an atomized liquid, comprising:

a hollow casing comprising an inlet and an outlet, the inlet being adapted to receive an airflow, the outlet comprising a nozzle having an aperture;

a liquid cartridge associated with the hollow casing; and

a tube with a tip and a source end communicating with the liquid cartridge, the tip of the tube positioned in a region on a side of the nozzle outside of an interior of the hollow casing, the tube adapted to draw a liquid out of the liquid cartridge;

wherein an opening on the tip of the tube comprises a diameter sufficiently small to prevent a flow of the liquid out of the tip due to surface tension absent a flow of low pressure air over the tip.

15. A method for producing an airbrush, comprising:

providing two halves of an outlet end of a hollow casing;

providing an inlet end of the hollow casing;

providing a liquid cartridge including anchors for attaching the liquid cartridge to the two halves of the outlet end; and

welding the two halves together to form an outlet component, thereby sandwiching between the two halves the liquid cartridge and the nozzle insert.

16. The method according to claim 15 , further comprising providing a nozzle insert adapted to fit between the two halves of the outlet end near an outlet.

17. The method according to claim 15 , further comprising joining the outlet component and the inlet end.

18. The method according to claim 17 , wherein the joining of the outlet component and the inlet end comprises a friction fit.

19. The method according to claim 15 , wherein the two halves of the outlet end comprise plastic.

20. The method according to claim 19 , wherein the welding of the two halves of the outlet end comprises ultrasonic welding.