Abstract: A coupling assembly is disclosed having a female element with a conically shaped transition segment integrally formed between a mating segment and a central segment. As the mating segment of the male element is inserted into the female element, the conical transition segment serves to guide to the mating segment into an engaged position with the central segment of the female element.

Abstract: A fueling nozzle for pressurized fuel systems having a body connectable to a tank inlet. The body includes an axially displaceable valve movable between a closed retracted position and an extended open position. Connection of the body to the tank inlet occurs upon rotation of the connection sleeve and positioning of the valve is achieved by a rotatable cam sleeve having a cam slot in which a valve-mounted follower is located. An interlock senses mounting of the body on the tank inlet permitting rotation of the connection sleeve in a locking direction and upon the connection sleeve being fully rotated to a locked condition a second interlock permits rotation of the cam sleeve and valve movement from the closed to the open position. The nozzle is characterized by reduced flow resistance characteristics and safe operation.

Abstract: A fueling nozzle for closed circuit fuel systems comprising a body having a passage including inlet and outlet ends. A reciprocal plunger within the passage serves to open the fuel tank inlet and cooperates with a valve to close the nozzle when not in use. A reciprocal differential pressure actuated pressure regulating sleeve within the passage is positioned relative to a valve seat in accord with the nozzle fluid pressure and the nozzle passage is exposed only to regulated pressure. An indicator mounted on the body senses the position of the pressure regulator sleeve to give a visual indication of the position and condition of the regulator sleeve.