Patent ID: 6575338
Filing Date: 2003-06-10
Classification: B01F,B05B,B05C,G01M,G01N

Abstract:
A fluid dispenser having a syringe with ports on opposite ends thereof, a piston movable inside said syringe back and forth, and a supply tank being connectable alternately to one of said ports depending upon moving direction of said piston, said fluid dispenser dispensing a fluid from one of said ports that is located on the end of said syringe toward which said piston is moving, while sucking the fluid from said supply tank into said syringe through the other of said ports, said fluid dispenser comprising:a pair of stirrers provided in said syringe on opposite sides of said piston, said stirrers being rotatable on a rotary axis that extends parallel to the moving direction of said piston; and a pair of stirrer driving devices disposed on an outer periphery of said syringe in correspondence with said stirrers, for driving said stirrers to rotate each individually by a magnetic force.