Automatic water supply device
OwnerNobuharu Kasaiinventor
Life of this patent
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Abstract
An automatic water supply device for animals or plants, which uses a siphon tube for transferring a batch of water from a vessel having a float-valve type water inlet control device to a tray. The water transferring operation of the siphon tube is triggered by the water head applied to the siphon's outlet end and by the water received in the tray being reduced by a predetermined amount due to reduction of water level in the tray. The inlet tube portion of the siphon tube located in the internal space of the vessel has a diverged open end having an opening area which is substantially larger than that of the outlet tube portion of the siphon tube.
Claims11
An automatic water supply device comprising:
- a tray adapted to receive water up to a predetermined first level;
- a first vessel having a float and valve assembly which controls supply of water into said first vessel so as to maintain a predetermined highest second level of water in said first vessel;
- and
- a siphon tuve having a highest point, an inlet tube portion which extends downwardly from the highest point and has an open inlet end which has a substantially horizontally disposed annular edge which defines an inlet opening area and is located in said first vessel at a predetermined third level which is lower than said second level, and an outlet tube portion which extends downwardly from the highest point and has an open outlet end which has an outlet opening area and is located in said tray at a predetermined fourth level which is lower than said first level, said inlet opening area of said siphon tube being substantially larger than said outlet opening area;
- wherein the highest point of the siphon tube is positioned between said second level and a level which is lower than said second level by the difference between said first and fourth levels.
Dependencies are inferred from the claim text.