초록 ▼

A tensile force actuated quick disconnecting coupling device for a fuel line having a vapor return has a pair of body members including interlocking elements which cooperatively couple and provide fuel and vapor passageways through the body members, and uncouple when a tensile force above a predeter

A tensile force actuated quick disconnecting coupling device for a fuel line having a vapor return has a pair of body members including interlocking elements which cooperatively couple and provide fuel and vapor passageways through the body members, and uncouple when a tensile force above a predetermined limit is interposed on the line. The interlocking elements are in the form of a mortise and tenon connection having a detent type infrangible locking member for interconnecting the elements together. The interlocking elements pivot one relative to the other so that a combination swivel joint and quick disconnecting coupling device is provided. Valving is disposed within each body member so that when the body members uncouple respective valves close the fuel passageways therein. The valving may include cylindrical stems which abut and open the fuel passageways when the body members are coupled and additionally permit pivoting of one body member relatively to the other. In one embodiment valving is also disposed with the vapor inlet passageway to close this passageway also when the body members uncouple, and this valving may include a cylindrical stem for abutting a portion of one of the fuel valves for opening the vapor passageway when the body members are uncoupled.

대표청구항 ▼

In a fuel dispensing system including a liquid fuel dispensing station for receiving fuel from a remote location and supplying fuel to a supply conduit and simultaneously receiving vapor from the supply conduit and returning the vapor to said remote location, a flexible line having a fuel path and a

In a fuel dispensing system including a liquid fuel dispensing station for receiving fuel from a remote location and supplying fuel to a supply conduit and simultaneously receiving vapor from the supply conduit and returning the vapor to said remote location, a flexible line having a fuel path and a vapor path operatively connected in flow communication to said conduit, and a nozzle including operator actuating means operatively connected to said line for receiving fuel and returning vapor, a detachable safety device connected in said line intermediate said nozzle and said conduit for coupling portions of said line together while maintaining the fuel and vapor in separate flow paths and for uncoupling when an excessive tensile force is exerted externally on said line, said device comprising first and second body members, each of said body members having a fuel passageway and a separate vapor passageway extending therethrough, each of said passageways having an inlet and an outlet, coupling means interconnecting said first and second body members together for pivotable movement about a pivot axis relatively to one another with the fuel outlet of a first of said body members in flow communication with the fuel inlet of the second of said body members and with the vapor inlet of the first body member in flow communication with the vapor outlet of the second body member to permit fuel and vapor to flow through the respective passageway when said body members are coupled, locking means for locking said body members together when coupled and for unlocking said members when an external tensile force above a predetermined limit is applied to said line to permit uncoupling of said body members, and valve means in at least the fuel passageway of each body member for shutting flow communication of at least the fuel between said body members when uncoupled.