Bite-actuated mouthpieces and drink vessels including bite-actuated mouthpieces

1. A bite-actuated mouthpiece, comprising:

a dispensing wall extending from one or more sidewalls and comprising a self-sealing exit, the self-sealing exit being selectively configured to transition between a closed configuration, in which the self-sealing exit is closed, and an open configuration, in which the self-sealing exit is open, wherein the one or more sidewalls form a barrel section, the one or more sidewalls being sloped such that a diameter of the barrel section narrows from an end of the mouthpiece opposite the dispensing wall to a second end of the mouthpiece including the dispensing wall; and

an inlet to an internal volume formed by the one or more sidewalls and the dispensing wall;

wherein the self-sealing exit is biased toward the closed configuration and is configured to transition from the closed configuration to the open configuration responsive to user-applied compressive forces to opposing bite regions disposed on the one or more sidewalls; and

wherein an entirety of the dispensing wall from the one or more sidewalls to a center of the dispensing wall is sloped downwards toward the internal volume and has a thickness that continuously increases from a minimum thickness adjacent to the one or more sidewalls to a maximum thickness at the center of the dispensing wall.

2. The bite-actuated mouthpiece of claim 1 , wherein the self-sealing exit comprises at least one slit.

3. The bite-actuated mouthpiece of claim 2 , wherein the dispensing wall comprises an interior surface that faces the internal volume and comprises a pair of elongate projections that extend from the interior surface.

4. The bite-actuated mouthpiece of claim 3 , wherein the pair of elongate projections extend from the interior surface along the at least one slit and at least partially define the at least one slit.

5. The bite-actuated mouthpiece of claim 2 , wherein the at least one slit comprises two intersecting slits.

6. The bite-actuated mouthpiece of claim 1 , wherein the dispensing wall has a dispensing wall thickness that continuously increases from a minimum thickness adjacent to the one or more sidewalls to a maximum thickness at a center of the dispensing wall.

7. The bite-actuated mouthpiece of claim 1 , wherein the one or more sidewalls have a sidewall thickness and wherein the sidewall thickness narrows from an end of the mouthpiece opposite the dispensing wall to a second end of the mouthpiece including the dispensing wall.

8. The bite-actuate mouthpiece of claim 1 , wherein the dispensing wall has an interior surface that faces the internal volume and wherein the interior surface extends from the one or more sidewalls at an acute angle.

9. The bite-actuate mouthpiece of claim 8 , wherein the interior surface extends from the one or more sidewalls at an angle of at least 45°.

10. A bite-actuated mouthpiece, comprising:

a dispensing wall extending from one or more sidewalls and comprising a self-sealing exit, the self-sealing exit being selectively configured to transition between a closed configuration, in which the self-sealing exit is closed, and an open configuration, in which the self-sealing exit is open, in response to user-applied compressive forces to bite regions disposed on the one or more sidewalls; and

an inlet to an internal volume formed by the one or more sidewalls and the dispensing wall;

wherein the dispensing wall has a dispensing wall thickness that continuously increases from a minimum thickness adjacent to the one or more sidewalls to a maximum thickness at a center of the dispensing wall;

wherein the one or more sidewalls form a barrel section, the one or more sidewalls being sloped such that a diameter of the barrel section narrows from a first end of the mouthpiece opposite the dispensing wall to a second end of the mouthpiece including the dispensing wall; and

wherein a sidewall thickness of the one or more sidewalls increases away from the dispensing wall.

11. The bite-actuated mouthpiece of claim 10 , wherein the self-sealing exit comprises at least one slit.

12. The bite-actuated mouthpiece of claim 11 , wherein the dispensing wall comprises an interior surface that faces the internal volume and comprises a pair of elongate projections that extend from the interior surface.

13. The bite-actuated mouthpiece of claim 12 , wherein the pair of elongate projections extend from the interior surface along the at least one slit and at least partially define the at least one slit.

14. The bite-actuated mouthpiece of claim 11 , wherein the at least one slit comprises two intersecting slits.

15. The bite-actuated mouthpiece of claim 10 , wherein an entirety of the dispensing wall from the one or more sidewalls to a center of the dispensing wall is sloped downwards toward the internal volume.

16. The bite-actuated mouthpiece of claim 10 , wherein the one or more sidewalls have a sidewall thickness and wherein the sidewall thickness narrows from an end of the mouthpiece opposite the dispensing wall to a second end of the mouthpiece including the dispensing wall.

17. The bite-actuate mouthpiece of claim 10 , wherein the dispensing wall has an interior surface that faces the internal volume and wherein the interior surface extends from the one or more sidewalls at an acute angle.

18. The bite-actuate mouthpiece of claim 17 , wherein the interior surface extends from the one or more sidewalls at an angle of at least 45°.