Abstract: A combination device for flow-regulation in an oxygen supply system, providing in a unitary device providing both an economizer valve which automatically and safely vents oxygen when the patient's demand or usage is less than the amount being constantly produced by the heat-induced evaporation (NER) of liquid oxygen in a supply reservoir, but automatically and economically stops the venting when the usage demand utilizes at least as much as the NER, in combination with a lockable flow-regulating oxygen-supply valve which can be pre-set to permit only a certain maximum flow rate of the oxygen although permitting the flow to be moderated to less than that maximum flow rate, thus giving an oxygen-therapy patient some control of oxygen flow-rate although preventing overdose.

Abstract: An improved diaphragm-type antidrip valve including a valve body defining an annular valve chamber having a fluid inlet and an axial fluid outlet defined by a centrally located valve tube with a diaphragm element having its peripheral portion held in sealing engagement against the outer end of the valve chamber by an end cap and its front face disposed for sealing engagement with the open end of the valve tube, wherein the diaphragm is formed with a centrally located button projecting axially from its rear face and received and radially supported in a socket in a valve follower slidably mounted in the end cap and biased towards closed position by a compression spring and the end cap including an annular contoured ramp presenting a concave seat adjacent the effective outer periphery of the diaphragm for radially and axially supporting the diaphragm in its open position.

Abstract: A fuel pressure regulator is shown as having two distinct and variable chambers sharing, as a common wall therebetween, a pressure responsive diaphragm which controls the position of a valve actuator depending upon the pressure differential existing across the diaphragm with such pressure differential being reflective of the pressure differential existing as from the magnitude of the pressure of the fuel in a first of the two chambers to the magnitude of the pressure within the second of the two chambers which is at ambient atmospheric pressure; a flapper type valve openable by the valve actuator serves to control the flow of fuel into the first of the two chambers from where the pressure regulated fuel flows as to associated fuel metering apparatus.

Abstract: A ball valve is disclosed having an improved seat ring particularly adapted for sealing a ball member in an end-loaded or top-loaded valve body. The ball is mounted for selective rotation and limited axial movement in a valve body passageway. The seat rings are disposed on diametrically opposite sides of the ball about valve inlet and outlet openings. Frusto-conical disc springs interposed between each seat ring and an associated valve body shoulder urge the seat rings into engagement with the ball. A rigid reinforcing ring is disposed intermediate of the flexible seat ring for integral movement with the seat ring and for reinforcing the seat ring against collapse under pressure. The reinforcing ring is received in an annular channel about the periphery of the seat ring and preferably comprises a split metal ring in a stressed and expanded condition.

Abstract: An improved inflation pressure regulator is disclosed of the type which automatically releases pressure above a predetermined maximum during inflation of a vehicular tire. The regulator, which is particularly suitable for use with low capacity tires and for use with high capacity air pumps, comprises a generally tubular housing adapted to be coupled between a vehicular tire and a source of compressed air. A substantially friction-free flexing seal arrangement within the housing couples the air source to an exhaust aperture and bypasses the tire when the pressure within the tire reaches a predetermined level. The use of a flexing seal substantially reduces seal wear and thus reduces seal leaks and minimizes variations in the regulator rating over the life of the regulator.

Abstract: An improved water seal drum for gas comprising a vessel containing seal water, a gas introducing pipe extending downward from the upper part of the vessel, the lower end of the pipe opening beneath the water level, and a gas discharging pipe at the top of the vessel; characterized in that the gas introducing pipe is equipped with gas dispersing pipes having multiple nozzles for releasing the gas at a location above the lower end of the gas introducing pipe but beneath the water level. The drum enables stable water seaing of gas in a wide range of gas flow rates, and is particularly useful as a water seal drum for inflammable waste gases to be burned in a flare stack.

Abstract: A fuel pressure regulator has a multi-faceted extruded base that allows the outlet from the pressure regulator to be oriented in any of six different directions. A fuel body has a projecting snout and a fuel passage extending through the snout, and the inlet to the pressure regulator plugs directly onto the snout; the fuel passage thereby supplies fuel to the pressure regulator, and the pressure regulator thereby maintains the desired fuel pressure in the passage.

Abstract: A pressure relief valve is disclosed. The pressure relief valve comprises a valve housing including fluid passageways, a poppet valve disposed within the housing, a piston disposed within the housing, and spring means disposed intermediate the piston and the poppet valve for biasly urging apart the piston and the poppet valve. The poppet valve has a valve seat which, together with a portion of the housing, defines a variable valve area. The piston has a piston area, relatively greater than the variable valve area, for modulating flow through, and pressure drop across, the poppet valve. The pressure relief valve preferably includes an orifice disposed within the housing for selectively controlling flow of hydraulic fluid through the housing passageways to the piston. The housing preferably includes an elongated cage within which the poppet valve is longitudinally slidable.

Abstract: A safety valve for use in a hydrocarbon production tube comprises a valve member which is opened by a piston tube displaceable as a result of the intake of hydraulic fluid into an operating chamber therefor, and a tubular receptacle for receiving an auxiliary safety valve recoverable by means of a cable. The receptacle is longitudinally displaceable between inactive and active positions and is engaged telescopically with the piston tube in a sealed manner to define, with the piston tube, the operating chamber. The receptacle is normally retained in its inactive position by shearable elements, but after the elements have been sheared, descends to its active position simultaneously driving the piston tube to its lower position to open the valve member.

Abstract: A delay valve is attached to a fire hydrant and interposed between the hydrant and the hose and restricts the otherwise high flow and high pressure of the hydrant to a small fraction of the normal flow and pressure until the hose is filled up, at which point the valve opens fully so that the hose and hydrant are fully operational.

Abstract: A means and method for assuring a tight sealing closure of a valve in a high temperature condition, such as fire, is provided by an expendable link on the downstream side of the valve stem and an intumescent material and piston on the upstream side of the valve stem so that, at an elevated temperature condition, the expendable link gives way to create a tolerance allowing the piston driven by the expanding intumescent material to shift the valve closure element in the direction of the valve seat to accommodate for any deterioration of the valve seal.

Abstract: A faucet valve of the ceramic disc type convertable from hot to cold water usage by a reassembling of the elements.

Abstract: An off the road motorcycle of the type having a rear wheel mounting a balloon type tire and an improved suspension and driving arrangement therefor. The driving arrangement includes a first chain that is disposed on one side of the longitudinal center line of the motorcycle and which is driven by its engine and a second chain disposed on the opposite side of the motorcycle and driving the rear wheels. The chains are interconnected by an intermediate shaft that is journaled on the trailing arm and positioned rearwardly of the trailing arm pivot axis. A single substantially horizontally disposed suspension element cushions the trailing arm movement and an improved arrangement is provided for maintaining uniform tension in the first chain.

Abstract: A valve assembly comprising a valve housing defining an internal valve cavity and a fluid flow passageway, a valve element rotatably received in the valve cavity to control flow through the passageway, one of the valve housing or the valve element defining a seating surface, the other defining a seal member carrying surface, and a seal member carried on the seal member carrying surface on either the valve housing or the valve element for engaging the seating surface and effecting a seal between the valve using the valve element, the seal member being comprised of an intumescent material.

Abstract: A valve for controlling the flow of a liquid coolant in a circuit interconnecting several hollow welding electrodes with a pressurized coolant source has dual ball check valves in the supply and return lines respectively and a spring and pressure responsive device for holding the ball check valve in the supply line open when the fluid pressure of the coolant in the cooling circuit is maintained. The device is responsive in operation to loss of pressure in the coolant supply line and the hollow electrodes to permit the dual ball check valves to close upon a loss of pressure as occasioned by the burn out of one of the electrodes or the removal of the electrode from the circuit. The device may also originate an appropriate signal which may be directed to a remote electrical switch controlling the welding current.

Abstract: A control valve with a control slider (9) comprising bead-type areas (17, 18, 19), by means of which the control slider is slidably arranged in the cylinder bore (8). The areas (17) and (18) isolate the inlet (2) from the outlet (3), while the area (19) isolates the outlet (3) from the leakage oil port (4). The clearance between the areas (17) and (18) of the control slider (9) and the wall of the cylinder bore (8) is smaller than the clearance between the area (19) of the control slider (9) and the wall of the cylinder bore (8). The output pressure is kept within close tolerances with only minor leakage losses.

Abstract: A valve assembly comprising a valve housing defining an internal valve cavity and a fluid flow passageway, a valve element rotatably received in the valve cavity to control flow through the passageway, one of the valve housing or the valve element defining a seating surface, the other defining a seal member carrying surface, a coating of intumescent material disposed on at least a portion of either the seating surface or the seal member carrying surface, and a seal member carried on the seal member carrying surface on either the valve housing or the valve element for engaging the seating surface and effecting a seal between the valve using and the valve element.

Abstract: A breakaway hose coupling includes axially separable housing sections maintained in coupled relationship with each other by a frangible coupling pin or set screw. Each housing section includes a valve controlled flow passage in which a spring biassed valve closes the flow passage when the housing sections are separated. Valve stems on the respective valves moves into axial abutment with each other as the housing sections are coupled to mutually hold the respective valves open when the housing sections are coupled.

Abstract: A pressure regulator valve for use in fuel systems for internal combustion engines which includes a two-part housing lamination with a diaphragm between the bottom and top housings and a centering valve guide disc above the diaphragm. The diaphragm is responsive to fuel pressure and will open a valve to by-pass fuel to a fuel tank. The centering valve guide disc functions to locate a diaphragm backing disc above the valve seat. A preferred diaphragm is formed of thin metal such as stainless steel which is confined at its periphery by housing elements to avoid destructive deformation in maximum pressure testing. In another embodiment, the metal operating diaphragm is secured at its periphery and formed in a manner to react in response to pressure to counteract increased spring force of a diaphragm backing spring. A press-in spring cap or cup allows calibration of the unit during assembly with a strike-in to fix the calibration in a tamperproof structure.

Abstract: A butterfly damper with a plurality of blades which can be locked in the open position, and which, when released, rotate about a hinge to the closed position. A pawl member, attached to one blade, extends away from the blade and through an opening in a second blade when the blades are in the open position. A mounting member attached to the second blade restrains the pawl member thereby holding the blades in the open position. A bimetallic link attached to the mounting member causes the pawl member to be released when the temperature of the air passing through the duct increases beyond a preselected level. A closure spring attached to the blades acts on the blades tending to force them apart against the action of the mounting member and the pawl member when the blades are restrained in the open position. The damper blades can be insulated to prevent the heat from a fire on one side of the damper from being conducted by the damper to the other side when the blades are in the closed position.