Patent ID: 7971750
Filing Date: 2011-07-05
Classification: B01F

Abstract:
1. A method for dispensing droplets of various materials, comprising: arranging a plurality of removable reservoirs for holding the materials to be dispensed; positioning a reservoir from said removable reservoirs in contact with a dispensing mechanism through a coupling mechanism, said coupling mechanism providing an air tight connection between said material source and said dispensing mechanism; separating a droplet of the material from said reservoir and placing said droplet into said dispensing mechanism; accelerating said droplet with said dispensing mechanism; and expelling said droplet from said dispensing mechanism; wherein said dispensing mechanism comprises a rod that has at one end a domed shaped tip and at another end a flange termination, and said rod moves in a predetermined reciprocating manner in a tightly fit straight through hole into a body of said dispensing mechanism, and said straight through hole has an open end and an axially perpendicular placed hole into one side of its wall; and wherein said dispensing mechanism comprises a sealing cup that periodically forms a seal, or moves out of the way in a pre-established timing correlated with the redetermined reciprocating manner of said rod, at said open end of said straight through hole, and a stopper that limits and stops the forward move of said rod during the fluid dispensing process.