Abstract: A throttling unit (1) is joined with a pressure detector by a regulating device for controlling the discharge of a fluid from a container. The regulating device has a throttling unit (3) that is designed to pivot on an axis in a manner permitting regulated closure across the diameter of the run-of opening (2'). The throttling unit is joined in a manner permitting operative movement with a pressure detector (9), which, in dependence upon water pressure, governs the movement of the throttling unit in the closure diameter of the run-off opening. The regulating device is set in a throttling chamber (21), which details on one side an output control area (10) open to the atmosphere and a run-off area (2). Because of the compactness of structure of the throttling unit and the pressure detector, the space required for the regulating device is extremely small.

Abstract: A suction valve for a small refrigeration compressor is in the form of a thin sheet metal reed having a sealing portion adapted to make sealing contact with a valve seat around the suction port on a valve plate. The valve reed is formed from a valve sheet by an outline defining cut so that the valve reed is integral with the sheet. The valve reed has a reduced width neck portion and in this neck portion the material is plastically deformed along a bend line so that in a normal unstressed condition the sealing portion of the reed is spaced away from the valve seat by a slight distance and as soon as the piston starts on the compression stroke the fluid pressure forces the sealing portion into sealing engagement to prevent back-flow through the suction port. When the piston starts the suction stroke, the biasing of the valve reed causes the sealing portion to move out of engagement with the valve seat before there is a substantial pressure differential across the suction valve.

Abstract: A brew kettle in which the upper portion of the kettle wall includes a manhole and a vent hole and in which a door is pivotally mounted inside the upper wall portion such that, in its closed position, it closes off the manhole. The door is normally open due to the force of its own weight, and a counterweight arm is mounted on the door and extends inside the kettle so as to substantially reduce the force necessary to close the door.

Abstract: A volume flow or pressure regulating device is described which is especially suitable for air conditioning or air heating systems. The device transmits a torque moment function onto the flap control shaft in response to the flap angle. The device includes primarily a shaft (2) which is rotatably supported and extends through a conduit (3) in which the flap is mounted on the shaft which cooperates with a curved cam disk (10). One end of a tension cable (9) is secured to a circumferential point of the cam disk and the other end of the tension cable (9) is secured to the free end of a bending spring 6, the opposite end of which is secured to a fixed point. An adjustable tensioning member (7) defines, in accordance with its position relative to the length of the bending spring (6) the effective or bendable length of the bending spring (6).

Abstract: The invention concerns a volume flow regulator for ventilation systems with a conduit section (1) in which a regulating part (3) is pivotably mounted about an axle (2) which bisects the conduit cross section, whereby the regulating part (3) has a basically even surface on its leading side and a length which corresponds to the conduit height.In order to reduce the noises produced by the volume flow regulator itself, the regulating part (3) has a semicircular section in a plane vertical to its pivot axle (2), whereby the section radius corresponds to one half the conduit height. In a rectangular conduit section the regulating part (3) is a semicylinder whose curved contour fits against a conduit wall with a slight amount of play in all regulating positions. The regulating part can be balanced in various ways. In addition, a diffuser (24, 27) can be connected in after it which also functions as a sound absorber.

Abstract: The gate and swing valve has a body which defines at least one valve seat. A closure member inside the valve is pivotably mounted on a support. A cam and cam follower operatively couple the cam to the closure member. A stem has one end coupled to the cam for moving the closure member in a linear motion, in a swinging motion, and then in a linear motion toward the valve seat.

Abstract: A single line, pressure-pressure, pneumatic tube system having a pair of terminals each being capable of dispatching or receiving carriers. Each terminal provided with a blower to provide air flow, tubing connecting the two terminals, a pair of inline valves in the tubing, one facing in one direction and the other in the opposite direction. The valves being so designed that the one near the dispatching terminal automatically closes to permit build up of pressure and the one near the receiving terminal opens to exhaust pressure and slow the travel of the carrier as it approaches the receiving terminal, the terminal having a bleed-off orifice to assure carrier arrival.

Abstract: The present invention relates to an arrangement for controlling fluid flow through an aperture.In one embodiment, the flow control arrangement, which may be used in association with a window to control the flow of ventilating air, comprises a strip brush composed of an array of resilient filaments firmly mounted at their root region. The free end region of the filaments define, with a fixed flange, the effective area or width of an aperture for the passage of ventilating air. Variations in the strength of the air flow incident to the array of filaments causes changes in the degree of deflection of the filaments, thus altering the effective width of the aperture and controlling the air flow through the aperture.

Abstract: A fast closing valve for gaseous and liquid medium closes, against a resilient force, upon the occurrence of a sudden pressure difference in the conduit, specially aeration conduits for use in anti-aircraft protection shelters. The main part is a valve-flap having the form of a dihedron (10), which is mounted, pivoting easily within a chamber (9) about the axis of the vertex of the dihedron (axis 11). On either side of the valve-flap (10a, 10b) are associated deviation openings (7,8) of the chamber (9) which will be closed alternately by the pivoting of the flap (10). The flap (10) is normally held in a stable open position by a spring arrangement (14) until one or the other of the flap sides is subject to a pressure wave causing the closure of one or the other of the openings (7,8).

Abstract: A vehicle emissions control system includes an air pump (12), a catalytic converter (22) communicated to the air pump, and a bleed control valve (28) which controls the quantity of air communicated from the air pump to the catalytic converter. The bleed valve includes a support arm (50) which suspends a valve element (40) adjacent a tapered valve surface (36). The support arm relaxes in response to repeated flexing due to the pulsating output of the air pump. Accordingly, when the vehicle is new, the valve element is held away from the valve seat to permit substantially uninhibited communication through the bleed valve so that almost all of the air which would otherwise be communicated to the catalytic converter is bled off.

Abstract: A single line, pressure-pressure, pneumatic tube system having a pair of terminals each being capable of dispatching or receiving carriers. Each terminal provided with a blower to provide air flow, tubing connecting the two terminals, a pair of inline valves in the tubing, one facing in one direction and the other in the opposite direction. The valves being so designed that the one near the dispatching terminal automatically closes to permit build up of pressure and the one near the receiving terminal opens to exhaust pressure and slow the travel of the carrier as it approaches the receiving terminal, the terminal having a bleed-off orifice to assure carrier arrival.

Abstract: An automatic safety flow valve for fluid gas or liquid conveying conduits has a fluo-dynamically surface substantially flat plate eccentrically pivoted to turn in response to fluid flow rates above a normal threshold from a position substantially parallel to the flow path to a position retarding or stopping the flow.

Abstract: A fluid flow regulator wherein a shaft which extends transversely of the passage in a tubular housing carries a flap having two mutually inclined sections. A spring biases the flap to a fully open position and the flap is moved from such open position toward a fully closed position by the fluid which flows through the passage in a direction from the one toward the other axial end of the housing. A flow restricting device is installed in the housing so that it defines one or more channels for the flow of fluid against one or more selected portions of or against the entire flap, depending upon whether the flap extends across the entire passage or across a central portion of the passage. The flow restricting device enhances the sensitivity of the flap so that the latter can change its position in response to each variation of the pressure of fluid which is caused to flow through the housing at a relatively low pressure.

Abstract: An arrangement for regulating the flow of a gaseous medium in a conduit includes a flap valve pivotably mounted in the conduit and biased by a spring toward its open position and by the pressure of the gaseous medium flowing through the conduit towards its closing position. A rod-shaped member is pivotally mounted on one section of the flap valve, and a sleeve-shaped member is pivotally mounted on a plate-shaped element rigid with the conduit and extending axially thereof downstream of the flap valve. The sleeve-shaped member has a passage therein in which the rod-shaped member is received with play so that, upon rapid movement of the rod-shaped member in the passage, the sleeve-shaped member is entrained by friction on pivots, thus seizing the rod-shaped member. In this manner, the flap valve is prevented from fluttering, while its responsiveness to gradual pressure changes of the gaseous medium is unaffected.

Abstract: A prosthetic heart valve has a tubular valve housing, a suture ring, and a membrane-like gate supported within the housing. The flexible membrane is generally elliptical in shape and is fastened in the housing along half its periphery. Flexure of the membrane moves it between an open position which permits blood flow through the housing and a closed position which blocks the flow path of the housing.

Abstract: A damper valve is disclosed having a hollow body and two valve plates controlled by a velocity sensitive linkage allowing the passage of normal system velocity, but closing when the velocity exceeds normal flow rates as would occur with an air surge caused by a tornado. The mechanism is made up of a three bar trip linkage connected to the valve plate in such manner so that when the linkage roller arm is held in the lower position by the cam seat, the valve plates (damper blades) are held in open position.

Abstract: A flow-limiting device for a pipe carrying a fluid or gaseous medium, comprising a flap, means mounting the flap in the pipe for pivotal movement in a manner to vary the cross-sectional area of flow through the pipe, and spring means urging the flap in a direction to increase the cross-sectional area of flow and against the direction of flow through the pipe, so that the flap varies the cross-sectional area of flow through the pipe in dependence on the kinetic energy differential of the medium upstream and downstream of the flap. The spring means comprise a leaf spring one end of which is mounted in an upper part of a housing for insertion in the pipe and the other end of which carries the flap. There is a clearance beneath the lower edge of the flap to permit the passage of deposits in the medium past the flap in all positions thereof.

Abstract: Air control regulators include automatically operated air curtains in which pressure and volume vary depending upon demand. A lever and fulcrum principle is used in this controller with the fulcrum position being variable. The fulcrum position can be adjusted manually or mechanically over a wide range of positions for each size of regulator and this variable location of the fulcrum varies the air flow rate through the regulator by re-positioning the flexible air curtain assembly within the regulator.

Abstract: The shaft for the flap of a fluid flow regulator extends through the tubular housing of the regulator and its end portions are received in thrust bearings which subject the shaft to axial stresses. The bearings have internally threaded sleeves which are bonded to the housing, externally threaded plastic plugs which mate with the respective sleeves and have sockets for the respective end portions of the shaft, and hard metallic balls in the innermost portions of the respective sockets. The flap has two mutually inclined sections at the opposite sides of the shaft and is biased to open position, in which one of its sections lies flush against a centrally located partition in the housing, by a helical spring whose characteristic can be changed from the outside of the housing.

Abstract: A cylinder housing has a passageway extending in from the exterior thereof for admitting and discharging fluid to a cylinder portion. A piston in the cylinder has return movement by means of a resilient retracter, and a check valve having protected support in the housing is arranged to close off fluid discharge from the cylinder under abnormal fluid pressure return conditions such as when the ram is in use and there is a failure in the fluid supply for the piston.

Abstract: The invention is a flow delay valve to be used in conjunction with fire fighting and attaches to the fire hydrant so that as the fire truck proceeds to unroll hose on the way to the fire site the hose is filled slowly due to the action of the delay valve, permitting the fire truck to proceed unhindered by full hose pressure but without requiring the stationing of a fireman at the hydrant to turn the hydrant on after the fire truck has arrived at the site as the valve fully opens automatically upon the hose becoming filled to permit unobstructed water flow.

Abstract: A valve for the automatic flow control of a fluid in a conditioning system comprises as air lock means a tab rotatably mounted in a valve body, associated with a dampering device and a means for opposition to tab oscillations. The dampering device comprises a first rod mounted on the rotary shaft of the tab, fixed to a reactor gear meshing with a flywheel. The oscillation opposing means comprises a second rod fixed to the first rod and connected to the valve body by adjustable spring means. A fixed baffle is provided at the lower portion of the valve body, under the rotatable tab.

Abstract: A partition arrangement for rocket motors with at least two mutually independent thrust stages and nozzle and nose sides. The partition arrangement includes a partition member separating a combustion chamber on the nozzle side from another chamber on the nose side with the partition member being provided with at least one flow aperture therein. A sealing element is disposed on the nozzle side for sealing the at least one flow aperture of the partition member with the sealing element being displaceable for freeing the at least one flow aperture of the partition member and being maintained within the another chamber on the nozzle side upon displacement. At least the partition member and/or the sealing element is provided with only one flow aperture for permitting propellant gases from the nose side combustion chamber to enter the another chamber on the nozzle side only in a central direction.

Abstract: The present invention provides improvements in a control valve adapted to be used by a tracheotomy patient or in a laryngeal prosthesis. In one form, the control valve has a housing provided with a control opening, and a flapper mounted within the housing and operable to move toward and away from the control opening. In this form, the improvement includes a thumbscrew mounted to penetrate the housing to engage the flapper, such that the thumbscrew may be selectively rotated to vary the operational characteristics of the valve. In another form, particularly adapted to be used by a tracheotomy patient, the control valve is provided with a first control opening communicating with ambient atmosphere and a second control opening adapted to communicate with the trachea of a patient.

Abstract: A fail-safe sub-surface safety cut-off valve for fluid wells controllable from the surface and suitable for installation at substantially greater depths than prior constructions. The valve assembly is installable and retrievable via wire line technique and utilizes an electromagnetic means to operate either a flapper or a ball cut-off valve. The operating solenoid coil embraces a landing nipple portion of the tubing string and is outside the production flow. This solenoid supplies the power to open either type of cut-off valve and holds the latter open only so long as the solenoid is energized thereby providing surface control of the safety cut-off valve normally and assurance of closing of this valve in the event of power failure through accident or some catastrophe as well as automatic closure if flow velocity increases beyond a predetermined safe value.

Abstract: The specification describes a flow regulator for ducts in the case of which the free cross-section of the duct is arranged to be varied by a flap which can be turned against spring force by the flow in the closing direction. The flap is angled adjacent to the shaft and its one limb in the open position is directed substantially parallel to the axis of the duct to the rear and its other limb is directed in the closed position substantially perpendicularly to the duct axis. The spring force is adapted to act from the direction of the wall of the duct on a lever arm attached to the shaft in such a manner that the point of action of the force on rotation of the flap out of the open position into the closed position describes a circular arc, which are at the beginning is more oblique to the direction of the spring force than at the end.

Abstract: A trickle-flow irrigation valve of the type which is installable through the wall of a garden hose, and having a pressure chamber with an inlet passage from the hose and an outlet passage through a wall of the chamber in which are also formed a shallow channel and an outlet groove in the channel, communicating with the outlet passage. A flat, resilient valve element covers the outlet passage and a substantial portion of the groove and channel. The resilient valve element allows relatively high-volume, flushing flow when water is first received in the chamber, but deforms to the shape of the channel as supply pressure builds up, thus restricting flow to the outlet groove and providing a substantial pressure drop. A high supply pressure will force the valve element into the groove itself, to some degree, and a pressure regulating effect is thereby obtained.

Abstract: A fail-safe sub-surface safety cut-off valve for fluid wells controllable from the surface and suitable for installation at substantially greater depths than prior constructions. The valve assembly is installable and retrievable via wire line technique and utilizes an electromagnetic means to operate either a flapper or a ball cut-off valve. The operating solenoid coil embraces a landing nipple portion of the tubing string and is outside the production flow. This solenoid supplies the power to open either type of cut-off valve and holds the latter open only so long as the solenoid is energized thereby providing surface control of the safety cut-off valve normally and assurance of closing of this valve in the event of power failure through accident or some catastrophe as well as automatic closure if flow velocity increases beyond a predetermined safe value.