Patent ID: 8584691

Claim:
A system ( 99 ) for proportionally dispensing a liquid comprising: a reservoir ( 12 ) for receiving a first liquid ( 10 ) into which a proportional dosage of a second liquid ( 20 ) is dispensed; said reservoir ( 12 ) defining a bottom surface ( 11 ) and a top surface ( 13 ); a container ( 22 ) for storing said second liquid ( 20 ), said container ( 22 ) elevated above said top surface ( 13 ) of said reservoir ( 12 ); a dispensing vessel ( 100 ) for transferring said second liquid ( 20 ) from said container ( 22 ) into said reservoir ( 12 ), said dispensing vessel ( 100 ) defining a bottom surface ( 101 ) and a top surface ( 102 ), said dispensing vessel ( 100 ) having a maximum dispensing vessel head when filled to said top surface ( 102 ) with said second liquid ( 20 ); a first conduit ( 120 ) connecting the bottom surface ( 11 ) of said reservoir ( 12 ) to the top surface ( 102 ) of said dispensing vessel ( 100 ); a second conduit ( 124 ) connecting the bottom surface ( 101 ) of said dispensing vessel ( 100 ) to said reservoir ( 12 ) and said container ( 22 ), said second conduit ( 124 ) defining first and second mutually exclusive flow paths, said first flow path defined between the bottom surface ( 101 ) of said dispensing vessel ( 100 ) and the top surface ( 13 ) of said reservoir ( 12 ) and said second flow path defined between said container ( 22 ) and the bottom surface ( 101 ) of said dispensing vessel ( 100 ); and a pressure limiter ( 700 ), said pressure limiter ( 700 ) adapted to restrict the pressure of second liquid ( 20 ) in said second flow path to not in excess of said maximum dispensing vessel head; whereby an increased head resulting from an addition of said first liquid ( 10 ) to said reservoir ( 12 ) urges via said first conduit ( 120 ) a proportional volume of said second liquid ( 20 ) to be dispensed from said dispensing vessel ( 100 ) into said reservoir ( 12 ) via said first flow path of said second conduit ( 124 ), and a decreased head resulting from an evacuation of said reservoir ( 12 ) urges via said first conduit ( 120 ) said second liquid ( 20 ) to flow from said container ( 22 ) to said dispensing vessel ( 100 ) via said second flow path of said second conduit ( 124 ).