Patent ID: 8353319

Claim:
A liquid delivery system for supplying liquid from a portable container to at least one remote destination and removing vapor from said at least one remote destination, said liquid delivery system comprising: a portable container for retaining liquid therein; a liquid delivery hose having a liquid inlet and a liquid outlet, wherein said liquid delivery hose is in fluid communication at said liquid inlet with the portable container for receiving liquid from said portable container; a vapor recovery hose having a vapor inlet and a vapor outlet, wherein said vapor recovery hose is in fluid communication at said vapor outlet with said portable container for delivering received vapor to said portable container; and a manually operable nozzle-and-spout assembly in fluid communication with the liquid delivery hose and the vapor recovery hose to receive liquid from the liquid outlet of the liquid delivery hose and to deliver vapor to the vapor inlet of the vapor recovery hose, the nozzle-and-spout assembly including a free end configured to dispense liquid to an open environment; wherein said nozzle-and-spout assembly comprises: a nozzle body; and a two-channel spout connected to said nozzle body in removable and replaceable relation by means of a two-channel spout coupler; wherein said two-channel spout coupler comprises a liquid supply connection member and a vapor recovery connection member; and wherein said liquid delivery hose is connected in fluid communication with said liquid supply connection member, and said vapor recovery hose is connected in fluid communication with said vapor recovery connection member; and wherein, when liquid is removed from the portable container through operation of the nozzle-and-spout assembly, reduced air pressure in said portable container enables vapor to be suctioned via said vapor recovery hose into said portable container.