Patent ID: 9365342
Filing Date: 2016-06-14
CPC Classification: A61M,B65D,F16K,G01F

Claim Text:
1. A metering device for fluids from a containment volume, the metering device comprising: an exit from the containment volume; pressurizing means for pressurizing the liquid through the exit, an expansible metering chamber, a first kink valve for allowing a dose of the fluid material to flow from the exit into the metering chamber and fill the chamber to meter the dose, a dispensing outlet open to ambient pressure, a second kink valve allowing the fluid material in the metering chamber to flow from metering chamber to the dispensing outlet and manually operable means for co-ordinating action of the first and second kink valves whereby when the first kink valve is open for filling the metering chamber the second kink valve is closed and vice versa, wherein the metering chamber is resiliently biased in a first condition having a first volume and is expansible to a second condition having a second volume, greater than the first volume such that when the second kink valve is opened the metering chamber reverts from the second condition to the first condition to urge the contents of the metering chamber through the dispensing outlet.