Patent ID: 9387492
Filing Date: 2016-07-12
CPC Classification: B01L,B05B,G01N

Claim Text:
1. A dispensing apparatus for dispensing droplets, the apparatus comprising: a dispensing tip having a wall defining a fluid passage with an orifice, said wall having an outer surface, an actuator assembly comprising an actuator element and being arranged to engage with the wall of the tip and to disengage from the wall of the tip at said outer surface, wherein said orifice has a cross sectional area in the range of 0.00002 mm wherein the actuator is configured to, when engaged, apply a static mechanical pressure against the tip, said static mechanical pressure being a bias force upon which the actuator deforms to propagate a pressure wave through said wall to couple acoustic energy to liquid in the fluid passage to eject said liquid through the orifice as a droplet.