Patent ID: 8851333

Claim:
A dispenser cap ( 10 ) for a liquid container having an opening, the cap ( 10 ) comprising a means for attachment ( 30 ) to the container at the opening, a housing ( 12 ) for insertion into the opening, the housing ( 12 ) comprising a liquid inlet ( 14 ) to receive liquid from the container, a channel and a liquid outlet ( 16 ) to expel liquid from the container, the channel comprising a moveable seal ( 18 ) defining an outlet-side liquid volume ( 24 ) and an inlet-side liquid volume ( 26 ), the moveable seal ( 18 ) being biased to a first position towards the liquid inlet ( 14 ), and is moveable from the first position to a second position towards the liquid outlet ( 16 ) by increasing the inlet-side liquid pressure, such movement thereby causing a dispensable volume of liquid flow out of the outlet ( 16 ), characterised in that the moveable seal ( 18 ) also comprising a liquid outlet seal means ( 22 ) which is operable to seal the liquid outlet ( 16 ) when the moveable seal ( 18 ) is in its second position, thereby preventing further flow of liquid out of the outlet ( 16 ), the cap ( 10 ) also comprising a dispensable liquid volume adjustment means ( 32 , 34 ), operable to permit an end user to adjust the fixed volume of dispensable liquid, by manipulation of the volume adjustment means ( 32 , 34 ), and wherein the liquid outlet ( 16 ) is a non-return valve, allowing only the flow of liquid out and no backflow of atmospheric gas into the container.