Abstract: An automatic shut off valve comprising a housing having a main inlet, an outlet, a user inlet and a user outlet. A valve assembly is contained within the housing and is movable between an open and a closed position. In its open position, the user inlet and outlet are fluidly connected in series with the main inlet and main outlet while, conversely, in its closed position, the valve assembly sealingly closes and isolates both the user inlet and outlet from the main inlet and main outlet. A compression spring urges the valve assembly towards its closed position while a fluid flow rate greater than a predetermined amount into the user inlet retains the valve assembly in its open position. Consequently, in the event of an interruption or blockage of the fluid flow between the user inlet and outlet, the compression spring snaps the valve assembly to its closed position thus isolating the inlet and outlet from the main inlet and terminating fluid flow through the shut off valve.

Abstract: A modular air shut-off valve, particularly useful within the air conditioning environmental control system of an aircraft, is provided, which comprises a housing sized for insertion into a duct of the air conditioning system, a vane pivotally mounted within the housing for pivotal movement between open and closed positions and having flexible portions along its edges contacting the housing in the closed position for providing a resilient seal and to allow pressure relief in the event of overpressure within the duct.

Abstract: A seat belt retractor comprises a take-up shaft which is spring biased in a belt retracting direction; a planetary gearing having a sun gear nonrotatably mounted to the take-up shaft, a ring gear and a planet pinion; a mechanical tensionless mechanism which prevents the planet pinion from orbiting in the same direction as the belt retracting direction; and a motor actuated slack control mechanism meshing with the ring gear, wherein the tensionless state is established by preventing the orbiting movement of the planet pinion and the slack control is effected by rotating the ring gear.

Abstract: A gate valve having a casing, a seat, a gate having a tapered face made in the gate surface in the direction of its movement in the shut-off direction on the side opposite to the side facing toward the seat, a stop provided for engaging the tapered face of the gate, the stop being secured to a rod which is installed transversely of the centerline of a passage of the casing, a sleeve installed in the casing wall for rotation relative to the casing, the inner surface of the sleeve being coaxial with, and surrounding the rod, and the longitudinal centerline of the outer surface of the sleeve being eccentric with respect to the longitudinal axis of the rod.

Abstract: A check valve having improved sealing qualities and provided in the form of a replaceable assembly of a valve member and valve seat to avoid the need to replace the valve housing. The sealing surfaces are defined by obliquely directed, outwardly tapering sealing members which are capable of deflection to provide increased sealing area as the pressure on the downstream side of the assembly is increased. The valve assembly includes an annular base having an inwardly directed, tapered valve seat and an annular sleeve secured thereto in coaxial relationship. A spider member is secured to the other end of the sleeve and includes inwardly directed radial means terminating in a hub having a cylindrical bore to support the stem of the valve member. A spring is provided to bias the valve member against the valve seat.

Abstract: Rack and pinion steering gear in which an adjustable preloaded rack bearing carries an endless train of balls which are fed into and out of a linear track in the rack. With this ball train interconnection, the sliding friction between the rack and rack bearing is reduced while rack rotation from torque loads is prevented.

Abstract: There is disclosed an expanding gate valve having seats which are press-fitted into annular recesses in the valve body on opposite sides of the gate, each seat including a ring having at least one annular rib on its outer end which is of a harder material than that of the inner end of the recess and embedded therein to form a pressure barrier between the seat and recess.

Abstract: An improved through conduit gate valve having a double expanding gate assembly with floating seats. The gate assembly carries at its edges flat guide strips which are slightly thicker than the collapsed thickness of the gate. These strips engage the seals to keep them from blinding or back wedging the gate assembly during movement between its opened and closed positions. Elastic suspension elements mount the strips to the gate assembly for proper wedging action by expansion against the seals but insures return into the collapsed position during the mentioned movement.

Abstract: A fluid tap includes a first cylinder having a first axial hole adapted to be communicating with a fluid source and a first radial through hole in communication with the first axial hole for discharging therefrom the fluid coming from the fluid source and a second cylinder having a second axial hole for rotatably, securely and sealingly receiving therein the first cylinder and a second radial through hole capable of in alignment with the first radial through hole so that the wall defining the second axial hole will prevent the first radial through hole from discharging therefrom the fluid when the first and second cylinders are in a first relative position that the first and second through holes are incapable of communicating with each other and the second radial through hole will discharge therefrom the fluid when the first and second cylinders are in a second relative position that the first and second radial through holes are in communication.

Abstract: The invention is concerned with a blocking valve for liquids, which valve comprises a body (1), which forms a cylindrical valve housing (2) that is provided with flow openings (3), and a spindle (4) turnably mounted in the valve housing, the said spindle being turnable between a blocking position covering the flow opening in the valve housing and an open position liberating the flow opening, and the said spindle comprising a stationary body part (5) and a blocking part (6).

Abstract: A valve useful for connecting a source of fluid under pressure to a using apparatus upon actuation of an explosive squib. The connecting structure includes an outer tube of soft material within which there is disposed an additional tube of material having a frangible area. The inner and outer tubes define an annular space and an inner tubular space. One of the spaces is connected to the source of fluid under pressure, while the other of the spaces is connected to the using apparatus. Particularly, the inner tubular space is connected to a source of gas under pressure, while the outer annular area is connected to the using apparatus. Upon actuation of the squib the inner frangible tube is broken at the frangible area upon a bending of the outer tube without its fracturing thereby connecting the source of fluid under pressure to the using apparatus, while at the same time isolating the products of combustion of the squib.

Abstract: A butterfly valve for high pressures in the range of 150 to 2500 pounds per square inch and high temperatures in which the valve member is cammed by axial movement of the stem to the closed position by a cam in a diametral slot in the valve member and the valve member is rotated between closed and opened positions by rotation of the stem and the cooperation of the same cam and slot. The valve disk may be restricted from motion in the axial direction by a retaining cover for the slot. In a preferred form, the valve stem is located between the valve disk and the retaining cover.

Abstract: A ball valve operable between a fully-open position and a closed position for regulating fluid flow includes a valve body machined and arranged with a flow passageway extending completely therethrough and receiving at each end a fluid fitting for coupling to flow lines. Disposed within the interior of the valve body is a ball plug member which is supported below by a stem and needle bearing arrangement and is operable to be turned 90 degrees by a handle, stem and bonnet arrangement. The internal position of the ball plug member is maintained by a pair of ball seats which are centrally disposed within the flow passageway and are held in position by means of adapter cylinders which are in turn held in position by retainer plates. In order to maintain spring-loaded pressure and to provide a sealed interface between the ball seat and the adapter cylinder, spring seal assemblies are disposed within the adapter cylinder and between the ball seat and corresponding retainer plate.

Abstract: The safety device makes it possible to cut the water supply off quickly when there is a very low flow of water such as occurs when there is a leak, to cut off the water supply after predetermined time with normal water consumption, and to cut the water supply off very quickly when a certain predetermined maximum flow is exceeded as would occur with a fractured pipe. The safety device is automatically returned to its initial position when the water consumption is stopped and the shut off is first indicated by a significant reduction in flow. The device can also be manually returned to its initial position after a shut-off.

Abstract: The present invention comprises a valve body (24) with an inlet (28) and an outlet (30), and an inlet-closing poppet (32) moveably disposed within a chamber (26) in the valve body, the poppet incorporating a piston head (34) whose face (36) opposes the inlet and from which projects a plug (62) for closing-off the inlet (28) from the remainder of the piston face (36) when the poppet is at its inlet-closing position. A spring (54) urges the poppet towards its inlet-closing position with sufficient force to keep the inlet closed until the fluid reaches a preselected cracking pressure, whereupon the spring allows the poppet to be displaced slightly, exposing the remainder of the piston face to the fluid. The action of the fluid on the piston face is then sufficient to drive the poppet fully back to an annular stop (60) provided within the valve body whose engagement also serves as a partial seal about the periphery (70) of the piston.

Abstract: A valve formed of a body having a flow passageway therethrough defining an annular valve seat, a valve disc member positioned in the flow passageway movable between a closed and open position, the disc having a peripheral sealing surface which engages the valve seat when the valve is closed and a valve stem axially and rotatably received in stem openings in the valve body, the stem extending within the flow passageway, the valve disc being between the stem and the valve seat and boss portions having slots therein extending from the disc rearward surface to either side of the valve stem, each boss portion having aligned upper and lower slots in parallel planes intersecting the plane of the disc sealing surface at an acute angle, and pin members extending from the stem received in the upper and lower slots so that when the pin member is axially displaced the disc is moved to and away from the seat and when it is moved away from the seat, the disc may be rotated without contacting the sealing ring to open the va

Abstract: Pressure regulating valves intended primarily for use as pressure regulating shut-off valves are disclosed. The valves utilize a simple piston assembly operative between a valve open position and a valve closed position responsive to a spring biasing the assembly toward the open position against an opposite force proportional to the outlet pressure. The piston assembly has only a single seal to seal the assembly against leakage, with a shut-off mechanism operative on only a 180 degree rotation thereof being cooperatively disposed with respect to the piston assembly so as to not require any additional seals. Embodiments having a fixed pressure regulation and a manually adjustable pressure regulation are disclosed.

Abstract: A diaphragm type gas pressure reducing regulator and adapter in combination in which the adapter serves to isolate the diaphragm from the valve seat in the regulator in response to a spontaneous ignition. The adapter comprises a plunger which intercouples the valve and the diaphragm assembly during normal operation of the regulator and isolates the diaphragm assembly from the valve in response to a spontaneous ignition within the regulator body upstream of the diaphragm assembly.

Abstract: A valve (10) having an expansible gate assemblage of ported juxtaposed gate and segment members (18, 19) which are movable into sealing engagement with upstream and downstream valve seats (28) about the flow passage (12, 14) in the open and closed conditions of the valve wherein the valve includes pressure relief means which relieves excessive pressure in the valve chamber (11) into the upstream flow passage (12) when the environment in the chamber reaches a preselected temperature with the valve retaining capability of providing an upstream seal in the event of subsequent downstream leakage. The pressure relief means is installed in the segment member (19) of the gate assembly and comprises a passage (43) extending from the port (16) through the segment to the sealing face (25) of the segment member at a location which is exposed to the upstream flow passage (12) in the valve closed condition.

Abstract: A shutoff valve for installation in a gas distribution line to interrupt the flow of gas automatically upon a drop in pressure in the line due to a break or the like. The valve includes a movable valve member actuated by a piston which is disposed in a cylinder in communication with the distribution line. The top of the piston includes a calibrated aperture which admits gas into the cylinder beneath the piston so that the pressure beneath the piston in the cylinder is substantially equal to the pressure in the line. However, upon a sudden drop in pressure in the line due to a break or the like, the flow of gas through the aperture is metered so that the pressure in the cylinder beneath the piston becomes greater than the pressure in the distribution line, causing the piston to shift upwardly and move the valve member into a position where it interrupts the flow of gas. The pressure differential on the valve member retains it in the closing position.