Animal drinker

1. An animal drinker, comprising:

a base tray defined by an exterior drinking trough and an interior fluid reservoir and including a connecting passageway for maintaining a fluid at a fluid level that is a same in each of the exterior drinking trough and the interior fluid reservoir;

an upper reservoir for storing fluid positioned above the interior fluid reservoir;

an outlet assembly positioned at a bottom of the upper reservoir comprising an inlet at a top of the outlet assembly that directs fluid from the upper reservoir into a channel and out an outlet into a cavity; and

a buoyant float pan positioned in the interior fluid reservoir of the base tray; and

a float stop positioned at least partially in the cavity of the outlet assembly and comprising a sealing surface that presses against the outlet of the outlet assembly to prevent fluid from flowing into the lower reservoir, wherein the float stop comprises an extending member having a first diameter and a sealing end integrally formed from the extending member, the sealing end having a second diameter larger than the first diameter.

2. The drinker of claim 1 , wherein the upper reservoir further comprises a retaining ring that fits on an underside of the upper reservoir to hold the float stop at least partially in the cavity of the outlet assembly.

3. The drinker of claim 2 , wherein the retaining ring further comprises a through hole, and wherein the extending member at least partially extends out of the through hole of the retaining ring so that the buoyant float pan can push the float stop upward as a fluid level in the interior fluid reservoir of the base tray rises.

4. The drinker of claim 3 , wherein the outlet of the outlet assembly is provided on a protuberance that extends into the cavity to increase sealability of the outlet by the float stop.

5. The drinker of claim 4 , wherein float stop further comprises a foam pad having a top surface that is the sealing surface of the float stop, wherein the sealing surface of the float stop deforms around the protuberance of the outlet assembly to seal the outlet.

6. The drinker of claim 1 , wherein the cavity of the outlet assembly has a diameter slightly larger than the second diameter of the sealing end of the float stop, such that the float stop fits loosely within the cavity of the outlet assembly so that fluid can flow around the float stop into the interior fluid reservoir.

7. The drinker of claim 6 , wherein the float stop is maintained in a generally upright position within the cavity.

8. The drinker of claim 1 , wherein the extending member comprises a cavity extending therethrough.

9. The drinker of claim 8 , wherein the cavity terminates within the sealing end.

10. The drinker of claim 1 , wherein the sealing end defines a pocket configured to receive a sealing member.

11. An animal drinker, comprising:

a base tray defined by an exterior drinking trough and an interior fluid reservoir and including a connecting passageway for maintaining a fluid at a fluid level that is a same in each of the exterior drinking trough and the interior fluid reservoir;

a container for storing fluid positioned above the interior fluid reservoir;

an outlet assembly positioned at a bottom of the container comprising an inlet at the top of the outlet assembly that directs fluid from the container into a channel and out an outlet into a cavity

a float pan positioned in the interior fluid reservoir of the base tray that moves with the fluid level; and

a float stop positioned at least partially in the cavity of the outlet assembly and comprising a sealing surface that presses against the outlet of the outlet assembly to prevent fluid from flowing into the lower reservoir, wherein the float stop comprises an extending member having a first diameter and a sealing end integrally formed from the extending member, the sealing end having a second diameter larger than the first diameter.

12. The animal drinker of claim 11 , wherein the container further comprises a retaining ring that fits on the underside of the container to hold the float stop at least partially in the cavity of the outlet assembly.

13. The animal drinker of claim 12 , wherein the retaining ring further comprises a through hole, and wherein the float stop further comprises of an extending member that at least partially extends out of the through hole of the retaining ring so that the buoyant float pan can push the float stop upward as a fluid level in the interior fluid reservoir of the base tray rises.

14. The drinker of claim 13 , wherein the outlet of the outlet assembly is provided on a protuberance that extends into the cavity to increase sealability of the outlet by the float stop.

15. The animal drinker of claim 14 , wherein float stop further comprises a foam pad having a top surface that is the sealing surface of the float stop, wherein the sealing surface of the float stop deforms around the protuberance of the outlet assembly to seal the outlet.

16. The drinker of claim 11 , wherein the cavity of the outlet assembly has a diameter slightly larger than the second diameter of the sealing end of the float stop, such that the float stop fits loosely within the cavity of the outlet assembly so that fluid can flow around the float stop into the interior fluid reservoir.

17. The drinker of claim 16 , wherein the float stop is maintained in a generally upright position within the cavity.

18. The drinker of claim 11 , wherein the extending member comprises a cavity extending therethrough.

19. The drinker of claim 18 , wherein the cavity terminates within the sealing end.

20. The drinker of claim 11 , wherein the sealing end defines a pocket configured to receive a sealing member.