Droplet dispenser
AssigneeTTP Plc
InventorAdrian WOODWARD
Life of this patent
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Abstract
A droplet dispenser comprises a chamber (3) with a fluid inlet valve (2) and a fluid outlet valve (4). The chamber (3) is arranged such that the volume of the chamber may be varied in use to cause fluid to be alternately drawn in to the chamber (3) through the inlet valve (2) then subsequently expelled from the chamber through the outlet valve (4) to dispense a droplet. The droplet dispenser is capable of dispensing from an open reservoir and one may change the dispensed drop volume simply and easily. The droplet dispenser can also handle liquids which are normally seen as difficult to dispense, such as cyanoacrylate adhesives.
Claims20
A droplet dispenser comprising a chamber with a fluid inlet valve and a fluid outlet valve, the chamber being arranged such that the volume of the chamber may be varied in use to cause fluid to be alternately drawn in to the chamber through the inlet valve then subsequently expelled from the chamber through the outlet valve to dispense a droplet, the dispenser further comprising:
- a control actuator arranged to apply a driving force to the dispenser to change the volume of the chamber and thereby dispense a droplet;
- and
- a controller to control the magnitude or duration of the driving force applied by the control actuator to control the size of the droplet that is dispensed by the dispenser.
Dependencies are inferred from the claim text.