Abstract: The present invention allows an additional connection to a standard medical gas cylinder valve such as a CGA-870 valve. An additional connection may be used for filling a cylinder without removing the pressure reducer, simultaneous filling while drawing through the pressure reducer, or for any other purpose that requires an additional or non-standard connection to the cylinder. The additional connection will be through an adapter that screws into the burst disc port. Some gas cylinder valves have the burst disc center line closer to the outlet centerline. This close centerline may be accommodated by offsetting the access of the first and second port to provide clearances required.

Abstract: A refrigerant dispensing tool includes a three section body with a top manifold section having an evacuation port, a refrigerant supply port and an oil supply port. The intermediate body section has three elongated and converging valve chambers which connect with the corresponding ports and receive corresponding elongated fluid pressure balancing valve members. The valve members are independently operated and precisely controlled by corresponding air actuated pistons which receive pressurized air from corresponding air ports within the manifold section. An air actuated and spring biased annular piston is supported between the intermediate and base sections of the body and operates a set of circumferentially spaced balls which releasably clamp the tool to a stem valve fitting for a refrigerant system.

Abstract: A quick disconnect coupling is provided which is designed to minimize or eliminate flow obstruction when the coupling members are connected. Each coupling member includes a swing valve which is movable from a closed, sealed position to an open position which is out of flow-obstructing relation with the flow passageway. An actuator mechanism is provided for moving the swing valves from the closed position to the open position while simultaneously locking the coupling members in tightly sealed relation.

Abstract: The invention is an improved cam-lock fitting having grooves in the outer surface of the fitting for accepting cams of a mating fitting. The grooves are provided without forming indentations or obstructions in the interior flow through passage of the fitting. The cam-lock fitting includes a body with an interior flow path having a first opening and a second opening. The second opening is provided by a boss having a distal end with a transverse cross-section that is circular about the external surface and a transverse cross-section that is elliptical about the internal surface.

Abstract: A coupling includes a male half and a female half, where the female half has a fitting rigidly fixed to a stationary member such as an agricultural tractor. The male half can be coupled within the female half. When the male and female halves are coupled together, a valve assembly in the female half allows fluid flow through the coupling. When the male half is pulled out of the female half, the male half automatically disconnects from the female half. When the male half is removed, the valve assembly closes to prevent fluid flow through the coupling. The male half also automatically disconnects when the fluid pressure in the fluid system increases above a predetermined amount. In either case, a coupler body within the fitting moves against a centering spring to allow the male half to be removed from the female half. The selection of an appropriate centering spring determines the breakaway and overpressure release force.

Abstract: Disclosed herein is apparatus for installation on railroad cars and automatically connecting pneumatic and/or electric lines of two adjacent railroad cars. The principle of the product design is to apply pneumatic system's own pressure for automatically sealing the juncture area of the coupling and for sealing the hose end and maintaining air pressure at the compressor source when a train brake-in-two occurs. The preferred embodiment includes a substantially rectangular front-mating assembly attached to the front end of a rearwardly extending coupler shank and an installation portion for attaching said rectangular front-mating assembly to the undercarriage of a rail-car via said coupler shank. Said front-mating assembly includes a male and a female mating heads mounted on its front panel and a pair of alignment members installed at its two sides for guiding said mating heads to the appropriate coupling positions during the coupling.

Abstract: In the coupling assembly, after a plug member 42 is slightly inserted into a socket member 15 with a slight push of the plug member 42 relative to the socket member 15, air pressure enables the plug member 42 to reach its innermost position inside the socket member 15 so that the plug member 42 is connected with the socket member 15. The coupling assembly comprises: the socket member 15 for receiving therein a valve 16 which is opened when pushed; and, a cylindrical slider 25 for slidably receiving therein the socket member 15. The slider 25 is provided with a piston 28 and an engaging means 34 in its rear and its forward end portion, respectively. Through the engaging means 34, a plug member 42 is connected with the forward end portion of the slider 25.

Abstract: A device for connecting hydraulic lines to a second coupling muff (11) has a connector socket (13) to receive and fix a first hydraulic connector (24). The first hydraulic connector (24) has a first connector valve. The coupling muff (11) has a muff valve (12), and an actuating lever. The lever transfers the first muff valve (14) and the first connector valve into the open position when the first hydraulic connector (24) is fixed in the connector socket (13). A second hydraulic connector (27) is connected to an end of the coupling muff (11) remote from the connector socket (13). This device serves to connect a coupling muff, which is connected to a pressure source, to a hydraulic connector on the side of the load, even if the load side is pressurized in the disconnected state. The device is interconnected when such a load exists.