Patent ID: 8171965

Claim:
A leak prevention system for use with a liquid dispensing nozzle, the nozzle in fluid communication with a liquid dispensing pump, the system comprising: a body portion; a spout assembly extending from the body portion, the spout assembly having an outlet end configured for dispensing the liquid; a flow control valve in the body portion operable to allow or prevent the flow of liquid through a flow passage defined by the body portion; and a check valve comprising: a flap member pivotably attached within the spout assembly; and a closing member mounted within the spout assembly and oriented to engage the flap member to apply a continuous force to a rear face of the flap member; the check valve positioned within the spout assembly and downstream of the flow control valve and being responsive to the flow of liquid through the body portion and into the spout assembly; and wherein the check valve is biasedly disposed to remain closed when no liquid is flowing through the nozzle so as to prevent liquid from dripping from the outlet end when the nozzle is not activated.