초록 ▼

A dry disconnect coupling connects the transfer hose from a fuel oil storage tank and the fill pipe of a tanker truck to form a continuous flow path between the storage tank and the tanker truck. The coupling includes an adapter, a coupler, and means for returning fuel residue to the flow path or to

A dry disconnect coupling connects the transfer hose from a fuel oil storage tank and the fill pipe of a tanker truck to form a continuous flow path between the storage tank and the tanker truck. The coupling includes an adapter, a coupler, and means for returning fuel residue to the flow path or to an external reservoir. The adapter is attached to the fill pipe of the tanker truck on one end and to the coupler on the other end. The free end of the coupler is attached to the transfer hose from the storage tank. The adapter and the coupler each define a flow passageway therethrough which is sealed by a poppet valve having an end face. The fuel returning means includes a reservoir for collecting fuel residue that accumulates on the end faces of the adapter and the coupler during transfer operations. In a preferred embodiment, the returning means includes a venturi vacuum for suctioning the fuel residue out of the reservoir and into the flow passageway defined by the coupler. In another preferred embodiment, the returning means includes aspirating and pumping means for suctioning the fuel residue out of the reservoir into a holding chamber, and then pumping the fuel residue out of the holding chamber into the flow passageway defined by the coupler.

대표청구항 ▼

A coupling for connecting a first fluid conduit to a second fluid conduit to form a continuous flow path, said coupling comprising an adapter comprising a generally cylindrical adapter body having opposed ends and defining an adapter flow passageway therethrough, one of the opposed ends of said adap

A coupling for connecting a first fluid conduit to a second fluid conduit to form a continuous flow path, said coupling comprising an adapter comprising a generally cylindrical adapter body having opposed ends and defining an adapter flow passageway therethrough, one of the opposed ends of said adapter body attached to the first fluid conduit; and adapter valve means positioned within the adapter flow passageway for controlling flow of fluid through said adapter body, said adapter valve means comprising an outwardly facing end face adjacent the other opposed end of said adapter body; a coupler comprising a generally cylindrical coupler body having opposed ends and defining a coupler flow passageway therethrough, one of the opposed ends of said coupler body attached to the second fluid conduit; and coupler valve means positioned within the coupler flow passageway for controlling flow of fluid through said coupler body, said coupler valve means comprising an outwardly facing end face adjacent the other opposed end of said coupler body; means releasably connecting the other opposed end of said adapter body to the other opposed end of said coupler body such that the end face of the adapter valve means opposes the end face of the coupler valve means; and venturi vacuum means for returning fluid residue that accumulates on the end faces of said adapter valve means and said coupler valve means to the flow path.