Patent ID: 8434647

Claim:
A device for measuring and dispensing a prescribed volume of liquid comprising: a container having an interior compartment for storing the liquid; a dispensing mechanism including: a first conduit member for receiving liquid from the interior compartment of the container; a dose chamber member having a first port at a second end thereof that is in fluid communication with the first conduit member; an adjustable plunger member that is movably disposed within an interior of the dose chamber member, the plunger member having a flange that sealingly seats against an inner wall of the dose chamber, wherein a dose storage space is formed between an underside of the flange and the second end of the dose chamber for receiving the prescribed volume of liquid from the interior compartment of the container, a hollow second conduit member disposed within a hollow core of the plunger member, the second conduit member having at least one opening that communicates with the dose storage space, the second conduit member having a hollow interior defined by an inner wall that defines an inner conduit in communication with the dose storage space, the inner wall including inner flow channels formed therein; a first valve member at the first port that is movable between an open position that permits liquid from the interior compartment of the container to flow into the dosage storage space and a closed position; and a second valve member movably disposed within the inner conduit of the second conduit member, wherein movement of the second valve member to a first open position results in fluid communication between the inner conduit and the dosage storage space to permit liquid from the interior compartment of the container to be stored within the dosage storage space and wherein movement of the second valve member to a second open position results in opening of the inner flow channels such that liquid contained within the dosage storage space can flow into and along the inner flow channels to an exit port where the liquid is dispensed from the device, wherein in the second open position fluid communication between the inner conduit and the dosage storage space is provided.