Patent attributes
The liquid dispenser comprises a ratchet assembly, a rotor assembly, a reservoir assembly, and a drive mechanism. The reservoir assembly includes a reservoir and a reservoir tube; and the rotor assembly includes a drive gear and at least one compression element. The ratchet assembly includes a pawl configured to engage the drive gear when the drive mechanism is actuated. Optionally, the liquid dispenser includes a venting assembly and/or a dose control assembly. The venting assembly automatically vents the reservoir when the reservoir is mounted in the liquid dispenser. The dose control assembly allows the user to control the distance the drive mechanism may be actuated and thereby control the amount of liquid that is dispensed. The liquid dispenser of the invention provides accurate control over the amount of liquid that is dispensed as well as ease in replacing the reservoir.
