Abstract: A rectifier for establishing a flat fluid flow velocity profile in a pipe 16 is composed of a bundle of cylindrical tubes 12 of the same diameter and length, assembled to form a cylindrical block 10 having a diameter equal to the interior diameter of the pipe and having a honeycomb section. The interstices 18 remaining between the tubes of a median ring r.sub.2 are filled with a suitable filling material, while those 20 between the tubes of an outer ring r.sub.1 and those in a central zone r.sub.3 of the rectifier are left open.

Abstract: A bypass orifice and filter for use in the diaphragm of a toilet room flush valve includes an orifice member adapted to be mounted in the flush valve diaphragm, and a filter element attached to the upstream side of the orifice member. The orifice member has a metering restriction to limit the flow of water therethrough and the filter element has a plurality of openings therein in communication with the orifice member metering restriction. The smallest dimension of the openings in the filter element are less than the smallest dimension of the metering restriction so that any particle in the water passing through the filter element will pass through the metering orifice. In some embodiments the orifice member and filter element are an integral unit.

Abstract: Drill string component for top hammer drilling comprising a rod (13) surrounded by a tube packet (4,5). The rod is provided with a thickened section (14) for cooperation with a diameter reduction (15) in the tube packet which at upwards drilling is situated below the section (14). Through this flushing liquid is prevented from flowing out of the drill string when the drill string is extended.

Abstract: A flow control device for feeding water flow at a constant flow volume regardless of the pressure. The device comprises a conduit body with a coupling end for coupling with a water supply pipe to receive water therefrom and a discharge end for discharging the water therethrough. The conduit body is formed in the coupling end with a concavity having a bottom wall recessed from the coupling end face and a peripheral inner wall. A passage extends through the conduit body to have its one end opened into the bottom wall and the other end leading to a discharge end. Received within the concavity is an elastic valve having a constricted aperture in fluid communication between the water supply pipe and the passage for feeding the water into the passage through the aperture from the water supply pipe.

Abstract: A thermostatic control valve assembly for use in continuously mixing a hot first fluid with a cold second fluid to continuously produce a mixed fluid at a constant temperature. The valve assembly includes an improved mixing dome defining a mixing chamber that facilitates thorough mixing of the hot and cold fluids over a wide range of flow rates, including rates as low as two gallons per minute. The improved mixing performance is accomplished by a plurality of baffles sequentially disposed along the flow path within the mixing chamber. Each baffle defines an elongated opening which is angularly displaced from the elongated opening of the other baffles to turn the fluid flow, thereby optimally mixing the hot and cold fluids over a wide range of flow rates.

Abstract: A pipe blind including a plate for connecting to the end of a pipe, the plate having an outer edge and two parallel faces, the plate having at least one channel therein, the channel being located in the interior of the plate and having an exit port and an entrance port, the entrance port being located on one of the faces of the plate and the exit port being located on the edge of the plate.

Abstract: A seal ring for maintaining the radial position of an orifice plate in a carrier plate having a circular bore extending therethrough, the seal ring including a body having an inner periphery containing an annular recessed groove for receiving the outer periphery of the orifice plate and an outer periphery which is received by the circular bore of the carrier plate. The seal ring further includes a plurality of pins circumferentially spaced around the body wherein each pin is substantially tangent with the outer periphery of the body and also substantially tangent with the annular recessed groove of the body.

Abstract: Using conventional manufacturing methods, porous, sintered, compacted powder bodies shaped as straight cylinders can be produced with extremely small variations in their flow resistance to a fluid. According to the invention, such bodies are produced in series so that, for a certain fluid and a certain pressure drop above the body, they produce a predetermined flow which can easily be regulated by using simple pressure-regulating equipment for controlling the pressure drop. The invention comprises an apparatus consisting of a pipe with pressure-regulating means, a container for a body according to the invention, and a series of bodies with different flow resistance for setting different flow intervals in the pipe for given fluids. The invention also comprises a method for setting a predetermined flow for a specific fluid at a given pressure, and the use of well defined porous bodies enabling a desired pressure to be set by regulating the pressure drop across the body.

Abstract: An orifice installation for centering the center of a plate carrying device within a fitting is disclosed. The plate carrying device has a centering opening at its base which interacts with a stop pin in the base of the fitting. The plate carrying device further has ears on either side which interact with ears formed on the sides of an enlarged opening in the fitting to receive the carrying device therein in order to laterally center the carrying device. An opening is also formed in the top of the carrying device in which a plunger pin is positioned. A valve carrier of the fitting has a downwardly facing extension which upon positioning of the plate carrying device within the enlarged opening in the fitting and moving the valve carrier into place will contact the plunger pin, further stabilizing the carrier device within the fitting.

Abstract: An exhaust outlet with venturi is disclosed, comprising an upstream portion (18) in the form of a venturi, defined by upstream walls (16) converging at an open angle and connected, in a narrowed portion (15) to downstream walls (17) diverging at a more reduced angle and a cylindrical downstream portion (3) connected continuously to the downstream walls (17) of the upstream portion (18). The presence of the upstream portion in the form of a venturi substantially reduces the backlash noise without substantially affecting the available power of the engine.

Abstract: A variable orifice device for passing fluent material under pressure includes a piece of resilient material bent out of its normal shape so that one surface is in tensile stressed condition and the other surface is in compressive stressed condition. A slit extends between the two surfaces. Because of the difference in the stressed conditions of the two surfaces, one end of the slit is open and the other end, at the compressively stressed surface, is in force closed condition. The piece of resilient material is mounted in its bent, stressed condition in a frame which holds the material in the bent condition. The piece of resilient material may be cut from silicone rubber tubing such as is used for peristaltic pumps. The frame may be two annular members, one of which is a push fit in the other, with the other having an annular shoulder against which a disc of the resilient material is trapped and sealed by the one annular member.

Abstract: A flow constriction device for the complete removal of condensate from steam and compressed air lines and steam-using equipment. This device incorporates the insertion of a uniquely designed convergent/divergent nozzle into a body piece. The body piece is installed within the piping system using existing means. The nozzle is protected from blockage with a screen secured at the inlet of the body piece. The dimensions of the convergent/divergent flow channel are determined for each application taking into account factors of pressure differential and the flow rate of the condensate to be removed. The design of the assembly allows for easy interchanging of the nozzle piece to meet changes in system conditions. The body of the device can be reused, and the nozzle piece can be changed without disturbing the in-line screen element.

Abstract: A water saving valve is provided for attachment between a water supply pipe and a showerhead. The water saving valve has a spool fitted in a bore defined by first and second walls having first and second openings, respectively. The first and second walls separate the bore from a pipe passageway and a showerhead passageway, respectively. A circumferentially recessed groove is provided in a central portion of the spool, the recessed groove defined by a core which has a diameter approximately 80% of the diameter of the spool. The core has a valve passageway which, when the spool is fitted in the bore in a first portion, substantially horizontally aligns with the first and second openings to allow water to flow unrestricted therethrough. The spool may be rotated by a handle to different positions to regulate the quantity of water allowed to flow through the showerhead.

Abstract: A flow restrictor that is intended primarily for use in a reverse osmosis water purification system of the type having a reverse osmosis membrane housing receiving feed water to be purified and generating purified water at a first outlet and waste water at a second outlet. The flow restrictor of the invention comprises a selected length of elongated, doubly-extruded tubing having an inner, low-friction tube and an outer, higher-friction tube. The outer tube is coaxial with the inner tube and has an inner surface which is substantially contiguous with the outer surface of the inner tube. The diameter of the inner tube and the length of the tubing are selected for precisely limiting flow of water therethrough.

Abstract: The flow restrictor is a unitary one-piece element that can be fabricated from either metal or plastic by casting or molding. In use, it is press fitted into a bore in a solenoid valve body to provide a certain restrictive effect. It has a circular cylindrical central core that has a series of flanges that are axially spaced by gaps. Each flange has a circular outer edge that is interrupted by at least one axially extending through-notch. These notches are arranged to provide a tortuous path for the fluid flow, and sized to create a desired restriction. The restrictor provides two parallel flow paths, one, the tortuous path just described, and two, a through-hole through the core of the restrictor.

Abstract: The present invention seeks to provide a simple, low cost and easy-to-install (or remove) device for two-cycle engines which improves engine efficiency through more complete combustion, resulting in increased engine rpm and a decrease in emissions. The invention specifically relates to an insert device which is located upstream of the carburetor, preferably in a coupler which typically extends between an air cleaner and the carburetor of a two-cycle engine. The insert itself is generally formed as a tubular member (of one or more pieces) tapering from a larger inlet side to a smaller outlet side, with or without surface irregularities, i.e., ribs, flutes, etc., formed on its interior surface. It is important that the tuned air insert be located such that its lower edge, i.e.

Abstract: A orifice fitting for measuring fluid flow in fluid pipelines has a seal mechanism to seal the orifice plate to the orifice fitting body. The orifice fitting has an orifice plate carrier which moves downward into a seat slot to position an orifice plate in the fluid flow. An annular seal mounts to the orifice plate assembly for engaging and sealing against the downstream side of the seat slot. A retaining ring mounts to an upstream side of the plate carrier. Threads on the retaining ring allow the ring to be adjusted to set the overall width of the plate carrier assembly to provide an interference fit in the seat slot. Set screws in the retaining ring bear against the orifice plate, which in turn bears against the seal member.

Abstract: A steam restricter device of the present invention is designed for retrofit to an existing steam trap of the type including a bowl-shaped chamber-defining member having an opening in it for admitting steam and condensate, and a drain for passage of condensate from the chamber to a condensate return. The device includes a body having an upper portion and a lower portion of smaller outer diameter than the upper portion. The lower portion may be slidingly received in the drain without rotation. The body has a nozzle formed in it which is sized to permit passage of condensate, but to inhibit passage of steam. The upper portion has an intake in it which provides communication from the chamber to the nozzle, and the lower portion has an opening in it which provides communication from the nozzle to the condensate return. A generally tubular bushing fits around the lower portion of the body and sealingly engages a wall in the drain for sealing between the lower portion and the wall of the drainage opening.

Abstract: A bi-flow expansion device for a heat pump or other apparatus where fluid avel is reversed with different required flow rates in each direction. The device comprises a tubular member mounted in a refrigerant line and having non-symmetrical entrance-exits at the ends of the tubular member for changing the mass flow rate of refrigerant through the expansion device when the direction of refrigerant flow is changed.

Abstract: An orifice installation for centering the orifice aperture within a plate carrying device is disclosed. The orifice installation uses an orifice plate in cooperation with a seal that surrounds the outer edge of the orifice plate to seal the plate to a fitting. Reliefs are formed in the nonsealing portion of the surface of the seal through which the orifice plate outer circumference protrudes. The carrying device is provided to receive the plate and the seal. A mechanism is provided to have contact between the carrying device and the protrusions in order to use the manufacturing tolerances of the plate and the carrying device to center the plate in the carrying device.

Abstract: An axial flow-type pump for separating immiscible fluids having different specific gravities and a discharge manifold fluid connected to the fluid pump for drawing of the fluid having the heavier specific gravity. The fluid pump employs a rotatable impeller mechanism having a hollow core and a decreasing axial pitch in the direction of fluid flow. The fluid interface between the pump and the discharge manifold is adjustable, so that the discharge of the fluid having the heavier specific gravity can be adjusted. The fluids are introduced into the inlet end of the rotatable impeller to produce a high velocity swirling action in the fluids and a low pressure area along the longitudinal axis of the flow line, to generate a high centrifugal force as the fluids move axially and cause the fluid having the heavier specific gravity to migrate to the perimeter. The discharge manifold is then used to draw off the fluid having a heavier specific gravity.

Abstract: A variable flow restrictor valve is disclosed that is adapted to be inserted in a fluid line to provide first and second alternative flow paths therethrough in accordance with the pressure differential between inlet and outlet ends of the valve. The assembly is characterized by use of a moveable orifice tube which defines one of the alternative paths and an intermediate part of a valve housing defines a flow path which forms another alternative flow path having flow therethrough regulated by a stop disk and a valve disk both of which are fixed to the orifice tube on either side of the intermediate part to position the valve disk to either close or open the another alternative flow path in accordance with the aforesaid pressure differential.

Abstract: A mass flow controller having a bypass portion provided in a body through which a large amount of gas is passed and a sensor portion, laid between a primary chamber which is an inlet of the bypass portion and a secondary chamber which is an outlet of the bypass portion, through which gas flows at a small flow rate proportional to the flow rate of the gas passed through the bypass portion and capable of measuring the total flow rate of gas by measuring the flow rate in the sensor portion. The body is partitioned by a bulkhead into a primary chamber and a secondary chamber. The primary chamber is provided with an inlet for gas inflow and the secondary chamber is provided with an outlet for gas outflow. The bulkhead is provided with a plurality of through holes for connecting the primary chamber to the secondary chamber, and bypass elements selected depending on the flow rate in the bypass portion are fitted in the through holes in the bulkhead.

Abstract: A lighter having a body bounding a liquefied gas reservoir and an exhaust chimney through which the gas issues to the outside when a lid is opened. The lighter has a gas rate-of-flow limiter in the form of a tube of a length greater than 5 mm and of a very reduced flow cross-section between 0.03 and 0.002 mm. The tube is disposed in the reservoir and is fitted hermetically in the body either directly or with the interposition of a support member.

Abstract: An orifice installation for centering the orifice aperture within a plate carrying device is disclosed. The orifice installation uses an orifice plate in cooperation with a seal that surrounds the outer edge of the orifice plate to seal the plate to a fitting. Reliefs are formed in the nonsealing portion of the surface of the seal through which the orifice plate outer circumference protrudes. The carrying device is provided to receive the plate and the seal. A mechanism including an intermediate interface is provided to have contact between the carrying device and the protrusions in order to use the manufacturing tolerances of the plate and the carrying device to center the plate in the carrying device.

Abstract: A device for draining condensate or the like from steam piping systems while retaining the live steam within the steam piping system, which comprises a body structure having an entrance end, an exit end, and an internal cylindrical bore to permit fluid to flow into the entrance end and out of the exit end; and a nozzle structure removeably mounted within the cylindrical bore formed of a plurality of mutually separable, partially cylindrical insert segments which combine to form the nozzle and define a constricted passageway.

Abstract: A drain plug is disclosed for use with hollow structures which prevents the nsertion of an external probe into the structure internal cavity.

Abstract: A orifice fitting for measuring gas flow in gas pipelines has an energized seal. The orifice fitting has a plate carrier which moves downward into a seat slot to position an orifice plate in the gas flow. An annular seal mounts to the plate carrier for engaging a downstream side of the seat slot. The seal is energized or pressed outwardly by hydraulic fluid pressure. The plate carrier has a chamber containing hydraulic fluid and a piston. A pin protrudes outward. The orifice fitting slide valve carrier engages and pushes the pin downward as the slide valve carrier moves to the closed position.

Abstract: A fluid controller has a disk-shaped body member with a positioning mechanism and lip mechanism. The controller is unitary and when positioned in a fluid flow in a first position enables fluid to flow through an axial bore in the disk-shaped member and around the disk member and in a second position enables fluid flow only through the axial bore.

Abstract: A cup plug assembly having a cup plug element with an orifice and an integral seal element for use at the interface of two automatic transmission components clamped together, is self retaining and prevents the seal from being mispositioned during installation. The plug assembly is pressed into one of the two components prior to clamping the two components together.

Abstract: A cylindrical pipe of internal diameter d, intended for pneumatic transport of solid polymer particles. The pipe has contrictions located over its length in such a way that the distance l between two consecutive constrictions is between d and 10.times.d. Each constriction consists of a non-uniform restriction of the cross-sectional area S of the pipe. That restriction defines a new internal cross-sectional area S' of between 0.900.times.S and 0.995.times.S and has at least one unrestricted free passage defined by a circular sector of the area S with a vertex situated on the axis of the pipe and an angle at the vertex ranging from 5.degree. to 60.degree..

Abstract: A system for curing a green tire made from elastomeric material includes a tire mold with a surface defining a cavity for shaping the tire. A plurality of vent passages communicate the cavity with the exterior of the tire mold. An inflatable bladder presses the tire against the surface defining the cavity for a predetermined time in response to fluid pressurization. A fluid pressure source pressurizes the bladder. A conduit communicates the fluid pressure source with the bladder. A restrictor member is located in the conduit for restricting the rate of increase of fluid pressure in the bladder to a predetermined rate of increase during the first one-third of the predetermined time. During the first one-third of the predetermined cure time, portions of the tire adjacent the plurality of vent passages cure and restrict the flow of other uncured portions of elastomeric material into the vent passages.

Abstract: A bottom nozzle plate for a fuel assembly in a nuclear reactor. The bottom nozzle plate is formed from a rigid substantially square plate having legs adapted to be positioned on the lower core plate of the reactor for supporting the fuel assembly above coolant inlet openings in the core plate. The rigid square plate has two types of coolant flow holes therethrough. The first flow holes are grouped in clusters of four to define a square pattern relative to the sides of the plate such that the width of the sections of the plate between the flow holes in each cluster is less than the width of the sections of the plate between the clusters of four holes. Each of the second flow holes is formed in an irregular pattern to define a substantially clover leaf shape. The second flow holes are positioned so as to be above the coolant inlet openings in the core plate when the bottom nozzle plate is installed in the reactor.

Abstract: A method and apparatus for installing a weir to divert fluid flowing in a conduit and to convert potential fluid energy to kinetic energy.

Abstract: A manifold system is constructed for evenly distributing a liquid to, and/or evenly collecting a liquid from, a cell of a separator system. The flow paths between the manifold inlet(s) and manifold outlet(s) are all approximately hydraulically identical in numbers, types, and dimensions of flow components, such that: (a) the flow rates to/from each of multiple inlets/outlets is equivalent, even with changes in overall pressure drop or flow rate, and (b) the time required for liquid to traverse each of the manifold flow paths is approximately identical, enabling plug flow through the cell.

Abstract: A method of processing an orifice in a structure to attain a precise predetermined flow resistance through said orifice. Undersized orifices are machined by either electrochemical, chemical or electric discharge machining, while oversized orifices are electroplated, electroless plated or vapor deposition coated, such that the processing fluid, i.e. the electrolyte, corrosive fluid, dielectric or carrier gas as used in the machining, plating or coating process is passed through said orifice during said processing at a predetermined fixed pressure while measuring the dynamic flow resistance of said processing fluid through said orifice until said dynamic flow resistance is equal to that desired.

Abstract: A member M provides a preferred combination of reduced weight with increased resistance to buckling under compressive loading and includes a tubular member 10 with tool joints TJ at each end for connection to form a drill stem. The tubular member 10 further includes a first portion or pipe section 15 adjacent either one of the tool TJ and may include a second portion or pipe section 15' adjacent the other tool joint TJ which are of smaller or reduced diameter than the adjacent tool joint. An enlarged portion 20 extends longitudinally of the tubular member from adjacent the first portion to adjacent the second portion where there is a second portion adjacent the other tool joint. If there is only one first portion adjacent one tool joint, the enlarged diameter extends from adjacent such first portion to the tool joint at the other end of the tubular member. The enlarged portion 20 has a larger inner and outer diameter than the adjacent first portion.

Abstract: A fluid controller has a disk-shaped body member with a positioning mechanism and lip mechanism. The controller is unitary and when positioned in a fluid flow in a first position enables fluid to flow through an axial bore in the disk-shaped member and around the disk member and in a second position enables fluid flow only through the axial bore.

Abstract: A plug for plugging wrapped sleeves of paper or cardboard includes a hollow rotation-symmetrical body one half of which is cylindrical and another part of which is frusto-conical. The outer edge or rim of the cylindrical part is provided with a thickening which continually increases towards the end face of the plug.

Abstract: A screened fluid flow regulator assembly which is adapted to be held by a pair of fittings within the mouth of a fluid flow channel, comprising a combined screen and flow regulator housing, a regulator within the housing and a cap for sealing the regulator in the housing.

Abstract: A plurality of fluent substances are combined in a distributor (11, 37) and caused to flow in a continuous, pressurized stream through a mixing zone (13, 13', 57) wherein the substances are intimately mixed by turbulent dispersion effected by a series of conically shaped surfaces (24, 27; 62, 64) and alternate restrictions (25, 63) and expansion chambers (28, 65). While various fluent substances may be advantageously mixed, a typical utility is for effecting a thorough air binding of ink particles to attain efficient foaming (29) in the deinking of reconstituted printed paper slurry.

Abstract: An elementary length of the ducting comprises a pair of top and bottom plane panels (2, 3) and a pair of side panels (4, 5) having outwardly projecting longitudinal rims (8, 9, 12, 13) on their outside faces, the margins (10, 11, 14, 15) of the top and bottom panels (2, 3) and the rims (8, 9, 12, 13) of the side panels (4, 5) are predrilled to receive fixing bolts (6). A detection panel (47) is disposed as an inside lining of the bottom panel (3) and is connected via its own rims (48, 49) to the side panels (4, 5), and a tunnel (52) is left between the bottom panel (3) and the detection panel (47), with said tunnel opening out into the ducting, close to a bend.

Abstract: A restrictor is mounted within a passage of a control valve. The restrictor includes an annular disc having openings for the passage of fluid therethrough. The restrictor also includes a conical element coaxial with the annular disc. The restrictor limits the maximum discharge rate of fluid through the passage of the control valve.

Abstract: A volume governor for flowing media under static pressure formed as a throttle member and including a segmented cone with the angle of cone of about 90.degree. and made of plastics, a bore formed at an open apex is closed with a plug. The plug is made of elastic material with high damping properties. The bottom of the cone is closed with a perforated bottom plate.

Abstract: A flow restricting hose assembly comprising a tubular conduit having a permanently expanded cylindrical portion proximate one end thereof and a cylindrical insert having a longitudinal perforation therethrough inserted into the expanded portion.

Abstract: A high-pressure press-in fitting for a high-pressure hose connection with a quick connect screwed joint at the outside of a high-pressure purifying installation, characterized in that the press-in fitting of the quick-connect coupling, receiving the end of the hose on the side of the appliance and designed as a plug-in coupling, has in the flow-through area a molded-in verturi insert and is provided on the front end with a peripheral groove which communicates witha chemical additives-feeding cross bored hose coupling at the side of the appliance aligned with the annular groove, whereby there is communicating connection between the flow-through area and the cross-bore.

Abstract: A fluid pressure regulator for metallic flake pigment and other potentially degradable paints is provided by utilizing an orifice of such cross-section, shape and length so as to provide the desired pressure drop while at the same time maintaining flow in the laminar regime through the regulator.

Abstract: A method is disclosed which avoids the formation of droplets by condensation of vapors during the expansion of a highly compressed gas through a critical orifice.The pressure drop is distributed over a sufficient number of critical orifices so as to limit the temperature drop insufficient to initiate droplet formation.One application of the method is pressure reduction of cylinder gases without droplet formation.

Abstract: A throttle device for applying a back pressure to a high viscosity point in an airless paint supply system. The throttle device comprises a tube member having an inner through hole and an elongated core member inserted in the tube member and extending along the length of the tube member. A support means supports the core member relative to the tube member and a clearance is provided between the tube member and the core member to constitute a passage for the paint, the clearance being equal to or larger than 1.5 millimeters, and the length of the tube member being selected in relation to the clearance so as to cause a required loss of pressure.

Abstract: A plurality of fluent substances are combined in a distributor (11, 37) and caused to flow in a continuous, pressurized stream through a mixing zone (13, 13', 57) wherein the substances are intimately mixed by turbulent dispersion effected by a series of conically shaped surfaces (24, 27; 62, 64) and alternate restrictions (25, 63) and expansion chambers (28, 65). While various fluent substances may be advantageously mixed, a typical utility is for effecting a through air binding of ink particles to attain efficient foaming (29) in the deinking of reconstituted printed paper slurry.