Patent ID: 6913933

Claim:
A method for improving the dispensability of a metering system, said metering system including at least one dispense nozzle, a fluid supply, and at least one variable speed pump fluidly interconnecting said at least one dispense nozzle and said fluid supply, said at least one variable speed pump including a pump motor and having a mechanism which produces a variable fluid flow rate profile for a constant motor speed, said method including the steps of: aspirating fluid from said fluid supply; dispensing aspirated fluid through said at least one dispense nozzle; and effecting the relative velocity of the dispensed fluid by modifying a variable fluid rate flow using said pump motor during said dispensing step wherein said modifying step results in at least one of a change and a modification to said variable fluid flow rate profile and in which said relative velocity effecting step includes the step of offsetting a reference position of said pump motor in order to shift at least a portion of said variable fluid flow rate profile.