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1. (WO2018226883) VACUUM BREAKER VALVES AND BAFFLED LIQUID CONTAINERS
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Claims:

1. A device for dispensing fuel, comprising:

a spout for pouring liquid fuel;

an annular fitting attached to the spout configured to mate with a portable fuel container, the fitting having;

sidewalls forming a channel for liquid fuel;

an outer wall enveloping a portion of the sidewall forming a chamber proximate the liquid channel; and

an atmospheric orifice formed in the outer wall;

a sealing surface disposed within the chamber, proximal the orifice;

a stopper disposed within the chamber; and

a spring configured to bias the stopper into contact with the sealing surface such that the chamber is in selective pressure-dependent fluid communication with an atmosphere outside the device.

2. The device of claim 1 comprising a hose configured to place the chamber in fluid communication with a remote location within the fuel container.

3. The device of claim 1 , wherein the remote location is a bottom portion of the fuel container.

4. The device of claim 1 , wherein the sealing surface is a surface of a gasket disposed in the chamber proximal the atmospheric orifice.

5. The device of claim 1 , wherein the annular fitting comprises an annular cap encircling the sidewalls of the spout and covering one end of the chamber, the atmospheric orifice being formed in the cap.

6. The device of claim 1 , wherein the stopper comprises a ball stopper.

7. The device of claim 6, wherein the chamber includes a groove formed therein, the ball stopper being slidably retained in the groove and configured to guide the ball stopper into contact with the sealing surface.

8. The device of claim 7, the groove having a first long axis and the chamber having a second long axis, wherein the first long axis forms an angle with the second long axis of a least 10 degrees.

9. The device of claim 8, the channel having third long axis, wherein the second long axis is parallel to the third long axis.

10. A device for dispensing fuel, comprising:

a spout for pouring liquid fuel;

an annular fitting attached to the spout, the spout being mated with a portable fuel container, the fitting having;

sidewalls forming a channel for liquid fuel;

an outer wall enveloping a portion of the sidewall forming a chamber proximate the liquid channel; and

an atmospheric orifice formed in the outer wall;

a sealing surface disposed within the chamber, proximal the orifice;

a stopper disposed within the chamber; and

a spring configured to bias the stopper into contact with the sealing surface such that the chamber is in selective pressure-dependent fluid communication with an atmosphere outside the fuel container; and

a hose configured to place the chamber in fluid communication with a remote location within the fuel container.

11 . The device of claim 10, wherein the remote location is a bottom portion of the fuel container.

12. The device of claim 10, wherein the sealing surface is a surface of a gasket disposed in the chamber proximal the atmospheric orifice.

13. The device of claim 10, wherein the annular fitting comprises an annular cap encircling the sidewalls of the spout and covering one end of the chamber, the atmospheric orifice being formed in the cap

14. The device of claim 10, wherein the stopper comprises a ball stopper.

15. The device of claim 14, wherein the chamber includes a groove formed therein, the ball stopper being slidably retained in the groove and configured to guide the ball stopper into contact with the sealing surface.

16. The device of claim 15, the groove having a first long axis and the chamber having a second long axis, wherein the first long axis forms an angle with the second long axis of a least 10 degrees.

17. The device of claim 16, the channel having third long axis, wherein the second long axis is parallel to the third long axis.

18. A device for dispensing fuel, comprising:

a portable liquid fuel container;

a valve body attached to the fuel container, the valve body having a chamber formed therein, the chamber having a first end and a second end;

an atmospheric orifice formed in the valve body, proximal the first end of the chamber;

a sealing surface disposed within the chamber, proximal the orifice;

a stopper disposed within the chamber; and

a spring configured to bias the stopper into contact with the sealing surface such that the chamber is in selective pressure-dependent fluid communication with an atmosphere outside the fuel container.

19. The device of claim 18 comprising a hose configured to place the chamber in fluid communication with a remote location within the fuel container.

20. The device of claim 19, wherein the remote location is a bottom portion of the fuel container.