Patent ID: 8096483

Claim:
A method for dispensing a viscous liquid from a dispensing nozzle of a liquid dispenser over successive liquid dispensing cycles, a dispensed viscous liquid having a tendency at an end of a dispensing cycle to be pulled back toward, and accumulate on, a nozzle tip of the dispensing nozzle, the method comprising: forming a discharge fluid passage between a substantially conical outer surface of the nozzle tip and a substantially conical inner surface of a cap securing the dispensing nozzle to the liquid dispenser; supplying a pressurized fluid to the discharge fluid passage; producing with the discharge fluid passage a substantially conical layer of pressurized fluid surrounding the nozzle tip; and wiping the nozzle tip with the substantially conical layer of pressurized fluid while the viscous liquid is being dispensed, the pressurized fluid being supplied at a pressure such that the pressurized fluid does not substantially change a path or flight of the dispensed viscous liquid but substantially minimizes a tendency of the dispensed viscous liquid to pull back toward, and accumulate on, the nozzle tip.