Patent ID: 6782886
Filing Date: 2004-08-31
Classification: A61M,B05B,B41J,C25D

Abstract:
An apparatus to make a certain volume of liquid available for atomization, the apparatus comprising:a container adapted to hold a liquid; a piston pump comprising a piston member and a valve body, wherein the piston member is slidable within the valve body, and wherein the valve body functions with the piston member to define a metering chamber, wherein the metering chamber is adapted to be filled with liquid from the container when the piston member is moved to a filling position, and wherein the piston pump is adapted to dispense a known volume of the liquid from the metering chamber when the piston member is moved to a dispensing position; and a biasing member disposed between the container and the piston member to bias the piston member in the direction of the dispensing position and to require a force to be placed on the piston member to move the piston member to the filling position.