Abstract: A frangible fluid conduit fitting particularly suitable for servicing aircraft wherein the fitting is attached to an aircraft service bulkhead coupling. The fitting consists of two parts, one attached to the supply hose and the other attachable to the bulkhead coupling. The fitting parts are maintained in a sealed assembly relationship by a frangible connector having two separate frangible sections. One frangible section fracturing and releasing the fitting parts under excessive bending forces while the other frangible structure releases upon excessive tension forces being imposed upon the fitting.

Abstract: A low flow resistant dry break fluid coupling suitable for military and industrial refueling applications wherein the coupling is connected to a male adapter by radially displaceable detents operated by an axially movable locking sleeve. The coupling including a valve having a manual actuating handle which includes locking sleeve interference structure preventing the locking sleeve from being displaced to the adapter release position while the valve is in the open condition. Additionally, electric switch structure mounted upon the coupling body permits gloved actuation to control a fluid pump.

Abstract: A low flow resistant dry break fluid coupling suitable for military and industrial refueling applications wherein the coupling is connected to a male adapter by radially displaceable detents operated by an axially movable locking sleeve. The coupling including a valve having a manual actuating handle which includes locking sleeve interference structure preventing the locking sleeve from being displaced to the adapter release position while the valve is in the open position. Additionally, electric switch structure mounted upon the coupling body permits gloved actuation to control a fluid pump.

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 coupling for pressurized fluid medium circuits such as hydraulic or air wherein the coupling parts may be easily manually interconnected even though the fluid systems communicating with the parts are under high pressure. The coupling parts include self-sealing valves axially displaceable between open and closed positions and the valves include faces exposed to the pressurized medium, the faces being of substantially equal area and disposed in opposite directions such that the axial forces imposed on the valves by the pressurized medium are substantially counterbalanced. Such pressurized faces including elastomeric seals and valve seat shoulders.

Abstract: A ball valve connector of the frangible crashworthy type wherein two fluid flow connector body halves are interconnected by fracturable elements. Each body half includes a ball valve within a flow passage pivotally mounted on diametrically located pins. The pivot pins and valves are capable of displacement in the axial direction of fluid flow to compensate for manufacturing tolerances and provide maximum sealing characteristics. Each valve is rotatable 90.degree. between open and closed positions, and a stop projection defined on each valve cooperates with a spring biased stop ring providing positive retention of the valve in the closed position.

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.

Abstract: A system for repairing pipeline, such as underground fuel, gas or water pipeline systems which have been damaged by explosives, wherein the ruptured sections have been misaligned. Quick-connect fittings are attached to the misaligned pipe ends after trimming and a bridging conduit system is interposed between the fittings having adjustable portions for accommodating the misalignment. Rotative angular sections provide universal adjustment while retaining the fluid-tight integrity of the apparatus.

Abstract: A manually operated, power-assisted, self-sealing fluid coupling which utilizes pressurized fluid to interconnect the coupling parts. A sleeve within one part selectively locks to the other part and utilizes an expansible chamber motor to draw the other part into the one coupling part, and a second expansible chamber motor associated with the sleeve neutralizes the coupling force of the first motor during disconnection and manual operation of the sleeve through a valve component disconnects the coupling parts.

Abstract: A vent for a closed tank, such as a fuel tank, wherein the vent utilizes a normally closed valve, the valve being shiftable to egress and ingress venting positions by the flow of gas and air therethrough, the valve including spring counterbalanced support structure and gravity operated lock means preventing fluid loss through the vent upon the tank being tilted or overturned.

Abstract: An in-line axial flow nonrestrictive fluid pressure regulator utilizing a tubular valve axially displaceable within a flow passage. The valve is positioned with respect to a valve seat to control fluid flow and pressure by means of differential area pressure faces defined thereon. Damping of the valve movement to minimize "hunting" is achieved by dashpot structure interposed between the valve and regulator body.

Abstract: The invention pertains to a breakaway coupling for use with fluid systems wherein self-sealing coupling parts are interconnected by locking structure including a tubular displaceable operating member sealingly associated with a flexible conduit comprising a portion of the fluid system. Predetermined tension within the flexible conduit displaces the operating member to a coupling release position permitting the coupling parts to disengage and seal with minimum fluid loss.

Abstract: The invention pertains to a valve particularly suitable for sampling internal combustion engine lubricating oil while under pressure being used within the engine and consists of a valve body placed within a pressurized oil conduit. The body includes an orifice having a valve movable between open and closed positions by a sample collecting receptacle wherein one hand operation is readily achieved. The valve includes a proboscis suitable for piercing the sample receptacle diaphragm, and a spring produces a positive biasing force on the valve toward the closed position. A pressure balancing piston connected to the valve balances the force necessary for valve operation due to internal pressure. A removable cover protects the valve and proboscis when not in use.

Abstract: A fluid coupling for pressurized hydraulic systems permitting the interconnection of coupling parts even while both parts are pressurized. The coupling includes interconnectable parts employing self-sealing valves, and a manually operated lever axially translates an interlock to couple the parts. An expansible motor assists coupling, and a second expansible motor feature utilizes supply pressurized fluid to displace the valve of the supplied part although the same is under pressure during coupling. The coupling is of the "break-away" type wherein the parts uncouple under predetermined axial tension, and the self-sealing valves will not check under high flow rates.

Abstract: A seal assembly permitting a conduit member to be sealed within a bore in metal-to-metal relationship wherein a seal ring of a conical configuration in the relaxed state is deformed toward a flattened condition to increase its radial dimension and establish sealing under the influence of the pressurized medium of the system with which the seal assembly is employed. The relaxed state of the seal ring permits insertion and removal of the conduit into the bore without scoring, and the seal ring characteristics establish effective high pressure sealing while capable of accomodating limited lateral and axial displacement.

Abstract: A valved fluid coupling having tubular halves interconnected by frangible means. Each half includes a self-closing valve located in its passage and the valves are maintained in an open position by supports and retainers which sense the coupling connected state. Upon fracture of the connection means the halves separate permitting the valve retainers to release the valves closing the body passages. The frangible connection means takes the form of a rib formed upon one half overlapped by a projection defined on the other half having a retainer engaging the rib. Axial forces of a predetermined value on the halves cause the rib to fracture. Also, frangible means are disclosed for permitting valve half separation under radial shear forces and a sealing boot may be used to minimize fluid loss upon coupling disengagement.

Abstract: A coupling for handling liquids, gases, or a combination thereof characterized by its ability to convey high volumes with low flow resistance through valve elements. The coupling includes a pair of clam shell type valve elements pivotal between closed and open positions by the nose of the male coupling half during coupling of the halves and recesses defined in the valve elements receive the coupling nose so that the engagement between valve elements and coupling nose does not produce a flow restriction. The valve elements are provided with bonded resilient sealing edges and include a homogeneous bumper for absorbing shocks during coupling. A double action latch system is also disclosed having a sequence of operation which significantly reduces the likelihood of inadvertently uncoupling the coupling halves.