Abstract: The invention provides a valve that one may use to finely adjust the amount of fluid that flows to a device such as a portable gas burner. The valve includes a receiver through which fluid flows when the valve is open, a metering groove operable to form a metering passage in the receiver to limit the flow of fluid through the receiver, and a stem positionable relative to the receiver to form the metering passage from different portions of the metering groove to adjust the amount of fluid that may flow through the receiver. The metering groove includes a groove axis that extends the length of the metering groove and cross-sectional areas oriented perpendicular to the groove axis that differ according to their location along the axis. The metering passage is formed from all or a portion of the metering groove, and limits the flow of fluid through the receiver with the smallest cross-sectional area of the metering groove portion that forms the metering passage.

Abstract: A precision modulating globe valve for controlling the flow of a fluid from zero to a maximum flow rate. The valve plug of the globe valve includes at least one flow modulating channel recessed from the outer surface of the valve plug. The outer surface of the valve plug engages a sealing member positioned along the inner surface of the valve port. The sealing member provides a fluid-tight seal between the outer surface of the valve plug and the valve port. The flow modulating channel is recessed from the outer surface of the valve plug from a minimum flow end to a maximum flow end. The radially recessed area of the flow modulating channel increases from the minimum flow end to the maximum flow end, such that as the valve plug moves past the stationary sealing member, an increased flow rate is created through the valve port.

Abstract: A valve for mounting in an intake port of a reciprocating engine upstream from a charge changing valve, which valve contains a valve element (46) operating in conjunction with the inner wall of the intake port (16), may be moved back and forth between a closed position and an open position and when in the closed position blocks passage of fluid through the port and when in the open position clears such passage, and is characterized in that the inner wall of the port (16; 70) and the valve element (46) are of a design such that when the valve element is moved from its closed position the opening cross-section initially does not increase at all or increases only slowly and then increases rapidly and when the valve element is moved from its open position the opening cross-section initially does not decrease at all or decreases only slowly and then decreases rapidly.

Abstract: The seal assembly is disclosed for use with a valve having a trim cage with an inner surface extending along in axis and a plug sized to fit inside the trim cage inner surface, wherein the plug is adapted to move along the axis thereof. A seal ring is attached to an upstream portion of the cage to effectuate a seal with the plug. The plug is equipped with a wiper seal that cleans or otherwise removes debris from the seating surface of the seal ring, an interior surface of the seal ring and an interior surface of the cage during both the opening and the closing of the valve. Thus, the valve is self-cleaning. Further, the wiper seal delays throttling action through the valve until the plug has moved a substantial distance away from the seating surface of the seal ring which reduces high pressure abrasive flow against the seating surface of the seal ring to reduce wear on the trim set.

Abstract: The present invention is related to valves for the controlling the flow of media. For example, the valves of the present invention may control the flow of solid media into a fluid stream. More, specifically, the valves of the present invention may be used to control the flow of a blasting media into an air stream as part of a blasting apparatus for treatment of a surface. In one embodiment, the media control valve of the present invention includes a valve body having a media inlet and a media outlet. A housing is connected to the valve body. A plunger is positioned within the valve body and is connected to a piston positioned within the housing. A base is connected to the valve body such that it communicates with the media outlet. The media control valve of this embodiment may further include a sleeve disposed between the valve body and the plunger. This sleeve may contain a media opening.

Abstract: A hydraulically operated fluid metering apparatus provides discharge of a known volume of fluid to an actuator of a well tool. In one described embodiment, the fluid metering apparatus is connected to a hydraulic input of a well tool actuator. Discharge of the known volume of fluid to the actuator input causes a piston of the actuator to displace a known distance, thereby producing a known increment of actuation of the well tool. The discharge of the known volume of fluid may be repeated to produce a desired total degree of actuation of the well tool.

Abstract: A valve assembly has a valve body having an inlet passageway and an outlet passageway. A flow orifice is disposed within valve body and provides flow communication between the inlet passageway and outlet passageway. A valve seat cooperates with the flow orifice and a variable port valve plug to open and close the valve. The valve plug has a plug body with a conically-shaped smooth tapered wall, a proximal end, and a domed distal end surface that smoothly transitions into the tapered wall. The valve plug is movable between an open position out of contact with the valve seat and a closed position borne against the valve seat. A maximum open position of the valve plug relative to the valve seat can be selectively changed to vary flow characteristics through the valve assembly.

Abstract: A die for dispensing a fluid onto a substrate, wherein the die has an movable lip adjacent a fixed lip to form a die opening therebetween. An actuator is mechanically connected to the movable lip and is operable to automatically move the movable lip with respect to the fixed lip in association with a fluid dispensing process, thereby changing a volume of the die opening. The adjustable die is often a slot die and is used with a fluid dispensing valve having an upstream valve ball. The actuator can be an electromechanical actuator such as a piezoelectric actuator or a fluid operated actuator.

Abstract: An addition of a fine adjustment flow-control mechanism that produces changes in fluid flow in increments of 0.1% or less, to any configuration high pressure fluid flow control valve that employs an axial valve stem and a rotatable rough control knob that moves the stem axially in increments of 1.0% or more, opening the valve flow chamber to fluid flow. The valve stem is designed and driven so that it does not rotate or twist, and provision is made to minimize control drive tolerance build-up. These aspects produce a high degree of adjustment accuracy during operation of the flow control valve.

Abstract: Semi-spherical supports are used in the piercing of small, consistently sized holes in a soft metal. In particular, a flow control device, such as an orifice plate, can be fabricated with small, consistently sized flow apertures to regulate flow in a gas flow regulating device. By using semi-spherical supports, the need for hand-punching and real-time flow calibration can be avoided and automated machinery with a tapered piercing tool can be used to fabricate the flow control device.

Abstract: An apparatus for carrying out steps in the manufacture of a device under a prescribed pressure, the apparatus including a reactor chamber for accommodating the body, a gas supply pipe for introducing a process gas flow, an exhaust pump, an exhaust pipe, a pressure control valve for adjusting a valve opening, a pressure sensor and a control device. The pressure control valve comprising a first flow-through element and a second flow through element arranged behind each other in the exhaust pipe in the direction of the gas flow. Movement of either the first flow-through element or the second flow through element substantially transverse to the direction of gas flow establishes a desired overlap between the first flow-through element and second-flow through element and creates a common opening. The design of the pressure control valve renders the pressure control valve controllable in an almost fully-closed position, widening the range of prescribed pressures controllable with the valve.

Abstract: A flow control valve which does not utilize any moving components in the valve is disclosed. In the flow control valve, a valve housing that has a cylindrical-shaped wall is first provided. Inside the valve housing, is then provided a first and a second end plate for sealingly engaging an inner periphery of the valve housing. The first and the second end plate are positioned spaced-apart in a predetermined distance while each of the end plates has at least one aperture therethrough for the passage of a fluid flow to be controlled. Inside a valve cavity formed between the two end plates and the inner periphery of the valve housing is positioned an inflatable bag such that when a fluid is flown into the inflatable bag, the bag inflates to either partially block or completely block the fluid passageway through the valve cavity.

Abstract: A flow control valve which does not utilize any moving components in the valve is disclosed. In the flow control valve, a valve housing that has a cylindrical-shaped wall is first provided. Inside the valve housing, is then provided a first and a second end plate for sealingly engaging an inner periphery of the valve housing. The first and the second end plate are positioned spaced-apart in a predetermined distance while each of the end plates has at least one aperture therethrough for the passage of a fluid flow to be controlled. Inside a valve cavity formed between the two end plates and the inner periphery of the valve housing is positioned an inflatable bag such that when a fluid is flown into the inflatable bag, the bag inflates to either partially block or completely block the fluid passageway through the valve cavity.

Abstract: A flow control valve has a housing with a gas outlet and contains a mobile shaft which can be moved towards or away from this gas outlet. A member for closing and opening the gas outlet is attached to a front end of the mobile shaft. At least a portion of the front surface of this member is formed as a curved surface such that when the mobile shaft is moved away from the gas outlet from the position where the gas outlet is completely closed by the closing member, a gap is formed more gradually between the gas outlet and the closing member such that a more accurate continuous control of the flow rate through the valve can be carried out.

Abstract: In a vacuum valve including a main flow path and an auxiliary flow path for connecting a chamber port and a pump port in parallel, a main valve body for opening and closing a main valve seat in the main flow path, and an auxiliary valve body for opening and closing an auxiliary valve seat in the auxiliary flow path, the main valve body includes, in addition to a valve sealing member for opening and closing the main valve seat in a poppet manner, a flow rate adjusting portion in a gradually-tapered shape to be fitted in an inner hole of the main valve seat and the flow rate adjusting portion functions to gradually increase an exhaust flow rate when the main valve body opens after opening of the auxiliary valve body.

Abstract: Valve arrangement, in particular as pulse width modulated expansion valve of a refrigeration system, comprising the following elements: a valve body (1) with a passage opening (5), an armature tube (2) which is inserted into one end of the passage opening (5), an armature (3) which can be moved back and forth in the armature tube (2), a stationary armature core (4) which is inserted into the outwardly lying end of the armature tube (2), a restoring element (22) which is active between the movable armature (3) and the stationary armature core (4), a closure element (18) which is carried by the movable armature (3) and which cooperates with a passage opening (17) for opening and closing the valve arrangement as well as comprising a magnetic coil for actuating the valve arrangement, with a ring space (19) being formed between the armature tube (2) and the movable armature (3), the opening cross-section of which is dimensioned in such a manner that the space (20) which is formed between the movable armature (3) a

Abstract: A smooth exhaust valve includes a main flow path having a large cross-sectional area and an auxiliary flow path having a small cross-sectional area for connecting a first port and a second port in parallel, a main valve body for opening and closing the main flow path, an auxiliary valve body for opening and closing the auxiliary flow path, a first piston for opening and closing the main valve body, a second piston for opening and closing the auxiliary valve body, a first spring device for repulsing the main valve body in a valve-closing direction, a second spring device for repulsing the auxiliary valve body in a valve-closing direction, and an adjusting rod mounted to a valve casing so as to be operated from outside to move forward and rearward and for changing a compressed amount of the second spring device by operation of forward and rearward movements of the adjusting rod to adjust a repulsing force of the second spring device.

Abstract: A dispensing valve is shown that controls the flow of a fluid, the valve having a housing containing a cylindrical/tubular passageway between an inlet and outlet of the valve. A rod like closure member is operable to move through the passageway from a first position in which the valve is fully closed, to a second position in which the valve is fully open. The exterior surface of the closure member engages the interior surface wall of the passageway to seal the passageway and the interior surface wall and/or the exterior surface of the closure member have helical/spiral grooves therein. A spiral flow passage is defined through which the fluid can flow on its passage from the inlet to the outlet when the closure member moves away from its first position. Further movement of the closure member towards the second position regulates the flow rate of the fluid through the passageway.

Abstract: A water well recharge throttle valve (1) is configured as a hydraulic actuated flow control device (5) that permits calibrated throttling of water used in Artificial Storage and Recovery (ASR), Salt Water Barrier, Dedicated Recharge and Injection Wells to prevent the free cascading of water and thereby eliminating the entrainment of air which may cause air fouling, bio-fouling, calcite formation with a resultant reduction in permeability of the aquifer.

Abstract: A stem valve stopper that has a shell (1) intended to be mounted to a faucet (K). An operating stem (8) is mounted for rotation but is axially fixed in the stopper shell (1) and has a lower end that acts as a valve seat surface (12). The stem 8 has an interior section (7) that is threadably engaged with a mobile fitting (6) that is mounted in the shell so that it can be moved axially but cannot be turned or rotated inside the stopper shell. The mobile fitting (6) has an annular lower end surrounding a valve seat (12). A valve sealing member (17) made from elastomeric material is mounted in the lower end of stopper shell (1) and is spring biased downstream toward the valve seat (12). The mobile fitting (6) can be operated to push the sealing member (17) upstream away from valve seat surface (12) and provide flow about the valve seat (12).

Abstract: A valve includes a closing element which moves axially in the bushing. The flow entering the valve is directed towards the lower end of a closing element. The outflow is through a port in the wall of bushing. In the lower end of the closing element, there is a groove portion with a straight bottom which deepens towards the flow direction and steers the outlet flow to the port orifice. The groove is formed only in a part of the closing element lower end.

Abstract: A valve including a cylindrical bore having a circular seat at one end thereof, a valve member that is movable in the axial direction of the seat, and control means connected to the valve member, the valve member including a first portion which serves as a closure element, and a second portion which is engaged in the bore and which is shaped to regulate the flow of the fluid at a desired rate depending on the axial position of the valve member, the second portion of the valve member is detached from the first portion and has a cylindrical outside surface of diameter such that it is in sliding contact with the cylindrical surface of the bore; at least one recess is formed in the cylindrical outside surface of the second portion of the valve member so as to define a passage having a predefined shape, and means is provided for permanently holding the two portions of the valve member in mutual contact so that they are displaced axially simultaneously under the action of the control means.

Abstract: An apparatus for and method for protecting the electronic circuitry within a gas appliance. The electronic circuitry is arranged on a circuit board. A temperature sensor, located on the circuit board is periodically read to determine the current temperature. If the current temperature exceeds a first predetermined value, a microprocessor commands a stepper motor to reduce the input fuel pressure to the main burner. If the current temperature is within an acceptable range, the microprocessor permits the user to increase main valve outlet pressure.

Abstract: A choke system or valve assembly includes a valve having an orifice through which fluid flow can be choked or controlled. An actuator is adapted to position the valve at one or more incremental positions between an open position and a closed position. The valve, orifice, and actuator may be adapted to provide a substantially consistent (or otherwise predetermined) change in pressure drop and flow rate between different valve positions. This is accomplished by varying the flow area of the valve orifice non-linearly as the valve is shifted or stepped through the several valve positions. Another feature is the ability of the actuator in conjunction with an indexing mechanism to provide substantially precise control of the valve orifice through the several valve positions.

Abstract: An improved modulating expansion valve includes a housing having a high pressure side, a low pressure side and a piston reciprocally mounted in a portion positioned centrally therebetween. A manifold is sealingly mounted above the piston, and a high pressure control passageway extends from the valve inlets, through the manifold, to a chamber on top of the piston. A low pressure passageway extends from the chamber through the manifold to the valve outlet. A pair of electrically operated solenoids open and close the high and low pressure passageways to operate the valve. Substantially infinite control of the solenoids provide for modulating control of the valve in a semi-hermetically sealed expansion valve.

Abstract: A safety valve to stop flow in the flow pipe (3), the safety valve including a drilling device (8) with its frame (6) to drill a hole in the flow pipe, a winding device (7) fixed to the frame of the drilling device and a band (4) wound with a winding device. The safety valve includes a sleeve to which sleeve a drilling device (8) and a winding device (7) have been fixed and the sleeve has been equipped with systems to fix it to the outside surface of the pipe (3).

Abstract: A sleeve valve comprises a sleeve and a gate. The sleeve includes an intake, a discharge nozzle section, and a clean-out section. The discharge nozzle section includes a plurality of nozzles. The sleeve is adapted for fluid flow from the intake through a fluid passage and out the nozzles. The clean-out section includes at least one access port. The gate is adapted for sliding within the sleeve in sliding sealing engagement with the interior surface of the sleeve between closed, throttling, open, and clean positions. The gate and sleeve are configured so that the gate, when in the closed position, prevents fluid within the fluid passage from flowing out the nozzles and the access port. The gate and sleeve, when in the throttling position, permits fluid within the fluid passage to flow out some of the nozzles but prevents fluid within the fluid passage from flowing out the access port of the clean-out section and others of the nozzles.

Abstract: Filling valve for dispensing metered quantities of a flow of medium, comprising: a valve housing with a flow passage which has an inlet and an outlet opening; an actuable valve body which is accommodated in the flow passage, for opening and closing the outlet opening; actuating means for moving the valve body to and fro between an open position and a closed position; in which the valve body comprises a transitional part having a substantially circular cross section, which transitional part transits into a pointed end part, the transitional part and the pointed end part merging smoothly into one another via a convexly curved part running into an adjoining concavely curved part.

Abstract: A float operated valve for controlling the rate of flow of water from a pipe carrying water under pressure, to a vessel, comprises a pipe having an end opening of selected diameter and a flange of larger diameter surrounding the pipe. A flexible diaphragm is attached over the flange having a central closure pad adapted to cut off water flow when pressed against the pipe. A small orifice is drilled through the diaphragm so that when the flow is shut off, water can still flow through the orifice to the second side of the diaphragm. A second short pipe having a similar flange is bolted against the diaphragm to the first flange, to provide a water tight seal. There is a second small orifice in the second end of the second pipe, and a float mechanism is provided with a closure tip to close the second orifice when the water level is at a selected value. The closure tip varies the size of the second orifice so that the orifice is responsive to the float.

Abstract: A flow control valve for regulating the flow across an orifice to eliminate the effects of viscosity changes throughout a range of temperatures for the hydraulic fluid. The valve includes a base with an orifice and a slide valve element that registers with the orifice and that is movable by a double, helix-wound, bimetallic spring. The bimetallic spring extends linearly in the direction of motion of the slide valve element so that its effective length will change a predictable amount for a given temperature change, thereby progressively changing the size of the orifice as the spring moves the slide valve element to which it is connected.

Abstract: A hydraulic turbine mounted in-line between a gas production facility and the inlet of the sales lines for boosting pressure sufficiently to insert natural gas from the production facility into the sales line when the sale line pressure is at a high level. The turbine includes a compact turbine pump having several stages of compression with each compression stage including a 15-horse power motor that drives a hydraulic pump. A variable speed control is attached to the motor to allow the user to control the speed of the pump. Each pump stage has its own hydraulic motor that drives a turbine blade inside an enclosure. Pressure at each stage is controlled by means of an adjustable vane that has a stationary plate with a succession of fixed openings. The stationary plate is in face to face contact with a moving plate of similar design. The moving plate rotates at the center and may be adjusted by means of an elongated bolt assembly which adjusts the moving plate clockwise or counterclockwise.

Abstract: A valve for regulating a gas flow has a valve housing with an inlet for the gas to be regulated, an outlet for a regulated gas flow, a valve seat with a valve opening, and a movable sealing part with a controllable shaft, the terminal side of the sealing part making and breaking a seal between the valve seat and the sealing part such that the sealing part closes and opens the valve opening and regulates the gas flow through the valve opening. In order to allow particularly small gas flows to be repeatedly regulated with high precision and a large dynamic, the plane of the terminal side of the sealing part and the plane of the valve seat form a non-zero angle, allowing the terminal side of the sealing part to press against the valve seat, or to detach therefrom, so that the terminal side gradually closes and opens the valve opening.

Abstract: A water well recharge throttle valve is configured as a hydraulically actuated flow control device that permits calibrated throttling of water used in Artificial Storage and Recovery (ASR), Salt Water Barrier, Dedicated Recharge and Injection Wells to prevent the free cascading of water and thereby eliminate the entrainment of air which may cause air fouling, bio-fouling, and calcite formation with a resultant reduction in permeability of the aquifer. The valve includes a fixed tubular member which is selectively mounted in one of three ways: (1) to the lower end of the pump column, below the pump with a check valve/strainer mounted below the unit and including a co-generation/recharge feature; (2) to the lower end of the pump column, and above the check valve and submersible pump; and (3) to the lower end of a drop pipe, with a blind flange connected to the bottom end of the valve, a dedicated recharge well application.

Abstract: An orifice meter comprised of two concentric flanges and a center plate assembly is described. The center plate assembly includes an orifice plate holder arranged to rotate within the orifice meter around a shaft extending from the center of the center plate assembly and protruding through one of the flanges. Rotating the shaft will align one of the orifice plates in the orifice plate holder with the inlet and outlet pipe openings in the flanges. Thus, the orifice meter herein described does not have to be disconnected to change orifice plates. Pressure transducers are included in the flanges to determine the pressure upstream and downstream of the orifice plate. An inspection plug installed in one of the flanges allows for easy inspection and changing of the orifice plates, meaning that the orifice meter herein described does not have to be disconnected to replace or service the orifice plates.

Abstract: Semi-spherical supports are used in the piercing of small, consistently sized holes in a soft metal. In particular, an orifice plate can be fabricated with small, consistently sized flow apertures to regulate flow in a gas flow regulating device. By using semi-spherical supports, the need for hand-punching and real-time flow calibration can be avoided and automated machinery with a tapered piercing tool can be used to fabricate orifice plates.

Abstract: An improved continuously variable micro control valve and an apparatus and a method employing the same for making semiconductors enable a computer to precisely set a driver of the micro control valve such that the accuracy of the control valve in reproducing a flow value for a given setting of the driver is at least 1/1000 of a maximum flow value for a relatively wide range of flow values which can be provided by the micro control valve. The relatively wide range of flow values is at least 1000 to 1 in a disclosed embodiment with a resolution sensitivity of the micro control valve being at least 1/10,000 of the full scale of the relatively wide range of flow values. The improvement in repeatability and accuracy afforded by the micro control valve can result in higher yields in semiconductor making.

Abstract: A valve apparatus comprises a valve body, a piston disposed within the valve body, and a rolling diaphragm poppet that is attached the piston to regulates fluid flow through the valve via interaction with a valve seat within the valve body. The valve body has a chamber extending therethrough that includes a valve seat at one chamber end that defines a fluid inlet passage into chamber. The piston disposed within the chamber and is adapted for axial displacement therein by an actuating means. The rolling diaphragm poppet is attached to an end of the piston and is of a one-piece construction. The poppet includes a head that has a circular radial cross section, and that has a frontside surface that is adapted to interface with the valve seat in the chamber to control fluid flow therethrough. The head also has a backside surface that is adapted to accommodate attachment with an end of the piston.

Abstract: A liquid applicator having a curved hollow handle and a sponge head assembly. Liquid is poured into the hollow handle or the hollow handle is threadably secured to a threaded neck of a bottle. The sponge head assembly removably mounts to a dispensing end of the hollow handle and includes a base and a sponge. A pair of aligned holes are formed in the dispensing end of the handle and the base of the sponge head assembly for allowing liquid contained within the handle to flow therethrough and be absorbed by the sponge. A valve assembly is provided to adjust the flow of the liquid from the handle to the sponge. The valve assembly may include a dial formed with a plurality of different-sized holes. The dial is rotatable between a fully open position, a closed position or several intermediate positions. Alternatively, the valve assembly may include a slide plate having a tapered opening.

Abstract: A fluid control valve is described having a valve housing having first and second valve housing openings for the ingress and egress of fluid through the control valve. Disposed within a void formed by the control valve is a sleeve having at least one sleeve opening to permit the flow of fluid therethrough. A flow restricter travels within the sleeve to progressively block off the sleeve opening and thereby control flow. A fluid passageway is formed between the first valve housing opening and the outer surface of the sleeve. A second fluid passageway is formed between the inside of the sleeve and the second valve housing opening. Neither fluid passageway contains more than one 90.degree. turn. In the preferred embodiment only one of the two fluid passageways contains a 90.degree. turn. In another embodiment, the control valve housing is bifurcated by a control surface having control surface opening disposed therethrough.

Abstract: A solenoid valve (10) for use in an electronic shift control system of an automotive automatic transmission. The solenoid valve includes a body (12) having a cylindrical chamber (34) in which a movable armature (34) is slidably received and which is in communication with an inlet (96) for the automatic transmission fluid and an outlet (104). The body defines a cylindrical valve seat (88) in which a cylindrical valve member (90) coupled to the armature is slidably fitted. The valve member has a control port (92) opening onto the circumferential outer surface thereof and an inner passage (94) communicating the control port with the inlet (96). The solenoid valve is operable to control the fluid pressure substantially proportionally to the axial movement of the armature even in a condition in which a large amount of air bubbles are contained in the automatic transmission fluid.

Abstract: A slide valve for use in throttling the flow of fluid containing solid particles uses a fixed triangle orifice to reduce flow impingement on the wall of the valve defined by the valve body. The triangular shape and its orientation minimizes the flow of particles near the wall and geometrically increases the flow area with the movement of a single disc to reduce the decentralization of flow through the valve as the disc effects flow control.

Abstract: The VoSmart (a Variable Orifice/ Selective Monitored Artificial Recharge Throttle) Valve is a disclosed and the preferred embodiment of a hydraulically actuated flow control device that permits the calibrated throttling of water used in Artificial Storage and Recovery (ASR), Salt Water Barrier, Dedicated Recharge and Injection Wells to prevent the free cascading of water and thereby eliminate the entrainment of air which may cause air fouling, bio-fouling, and calcite formation with the resultant reduction in permeability of the aquifer. Wherein the VoSmart Valve includes a fixed tubular member which is selectively mounted in one of three ways: 1) to the lower end of the pump column, below the pump with a check valve/strainer mounted below the unit, a co-generation/recharge feature, 2) to the lower end of the pump column, and above the check valve and submersible pump and 3) To the lower end of the drop pipe, with a blind flange connected to the bottom end of the valve, a dedicated recharge well application.

Abstract: A proportioning mechanism for controlling a gravitational discharge of flowable material through a passage formed of a sealing material. The mechanism includes a rotatable flap valve mounted in the passage for movement in a first range of movement while in contact with the sealing material, and a second range of movement while out of contact with the sealing material. In the second range, a free flow of material is established. The free flow is terminated when only a small amount of material is yet to be discharged in order to achieve the desired discharge weight. At that time, the flap valve is rotated to a position in contact with a flexible portion of the sealing material. Fluid pressure in a cavity situated adjacent that flexible portion is varied to oscillate the flexible portion into and out of contact with the flap valve. When the flexible portion is out of contact with the flap valve, a gap is formed which admits passage of a small amount of material.

Abstract: A valve is provided for a metered introduction of fuel vapor evaporated from a fuel tank of an internal combustion engine into an intake tube of the engine. A valve housing which has an inflow fitting for connection to a ventilation fitting of the fuel tank or an adsorption filter for evaporated fuel vapors. The valve housing is connected to the fuel tank and has an outflow fitting for connection to the intake tube. An armature is provided inside the valve housing in which the armature is moved by an electromagnet and which is pressed against a valve seat by a valve spring when the electromagnet is without current. The armature closes a metering opening of a flow connection from the inflow fitting to the outflow fitting, and opens this flow connection to a greater or lesser degree when the electromagnet is supplied with current, wherein the metering opening has a V-shaped cross sectional area for improved metering.

Abstract: A flow control device to control the rate of flow of granular material or the like therethrough has a valved inlet to control the ingress of material into the flow control device. A flowmeter is downstream of the valved inlet to receive the material and detect the rate of flow thereof. The material travels along a generally steep path between the valved inlet and the flowmeter. The flowmeter includes a guide to collect the material into a generally coherent stream and redirect the stream from the generally steep path to a generally horizontal path. A controller is responsive to the flowmeter and controls the valved inlet so that the rate of flow of material through the flow control device is at or near to a desired rate.

Abstract: A nozzle actuating and adjustment system for applying sealant to a can lid member comprising a nozzle which has a sealant dispensing opening, a needle valve, a needle valve seat surface and a sealant flow passage for enabling flow of sealant material onto the lid member. The needle valve is selectively axially movable between an open sealant applying position and a closed non-flow position relative to the needle valve seat surface. A spring is operatively associated with the needle valve to normally hold the needle valve in the closed lowered position. A needle valve actuator solenoid is operatively connected to the needle valve for selectively causing axial upward movement of the needle valve from the closed position to the open position by a predetermined axial distance to provide a predetermined sealant flow gap in the nozzle to dispense a predetermined amount of sealant material during a predetermined dispensing time period.

Abstract: An adjustable fluid valve assembly includes a body that is operable to receive a spool that can be adjusted to vary the flow rate of the valve assembly. A lock nut secures the spool to the body and maintains the flow rate during operation of the valve assembly. The spool has a plurality of radially extending passages that allows fluid to be evenly distributed around the perimeter of the spool in a balanced manner in order to deliver a smooth continuous flow of fluid to an internal passage of the spool. An alternative embodiment employs a swivel fitting connected to the spool to allow adjustment of the fluid flow without disturbing the piping connected to the valve assembly.

Abstract: A needle valve in which the needle is moved with respect to its valve seat. The distal end of the needle has a length of a constant, uniform diameter that allows the flow to reach a maximum flow and not change while that finite length is moving within the valve seat. This allows a less critical placement of a stop that prevents further movement of the needle away from its valve seat.

Abstract: A flow control valve has a gate connected between an operating fluid inlet and outlet. An actuator permits manual adjustment of the gate area to allow fluid to pass from the inlet to the outlet at a threshold rate of flow for a threshold pressure at the first inlet. A biasing mechanism cooperable with the gate and linearly responsive to variations in a control pressure applied to a control inlet of the valve constantly automatically readjusts the area of the gate in proportion to the control pressure. In a constant speed pneumatic motor application of the valve, the motor inlet pressure is applied to the control inlet of the valve and the motor outlet pressure is applied to the operating fluid inlet of the valve. A regulator connected to the motor inlet senses the pressure at the motor outlet. In operation, at idle, the threshold flow rate through the valve is selected by manual adjustment of the valve actuator or stem. The load is added and the motor outlet pressure decreases.

Abstract: An electronic control system for gaseous fuel burners, particularly suitable for ovens and employs a single push-to-turn user control knob for selecting BAKE, BROIL or SELF-CLEAN modes of operation and for setting the oven temperature desired in the BAKE mode, the control knob turns a potentiometer shaft which provides a signal indicative of the shaft position to a microprocessor which controls relays for selectively opening and closing electrically operated BAKE and BROIL burner valves.