Abstract: The present invention relates to a switching valve block for a hydraulically actuable work machine that comprises a plurality of valve block inputs for a respective connection to a pressure output of one or more hydraulic fluid pumps, a plurality of valve block outputs for outputting a pressurized hydraulic fluid, and at least one valve that is arranged between valve block inputs and valve block outputs and is adapted to selectively produce a fluid connection between a first valve block input and a first valve block output or between a first valve block input and a second valve block output. The invention is characterized in that the first valve block output furthermore already has a fixed fluid connection to a second valve block input.

Abstract: A vehicle includes a chassis, an implement coupled to the chassis, a hydraulic actuator configured to move the implement relative to the chassis, a tractive element coupled to the chassis, a hydraulic motor configured to drive the tractive element to propel the vehicle, a drive pump fluidly coupled to the hydraulic motor, a charge pump coupled to the chassis and configured to provide a flow of pressurized fluid, and a valve assembly fluidly coupled to the charge pump. The valve assembly is configured to (a) direct a first portion of the flow of pressurized fluid to the drive pump and (b) selectively direct a second portion of the flow of pressurized fluid to the hydraulic actuator.

Abstract: The present disclosure describes a hydraulic control system comprising a first pressure chamber and a second pressure chamber, each pressure chamber configured to receive a hydraulic fluid, a first movable member configured to assume a position depending on a hydraulic pressure of the hydraulic fluid in the first pressure chamber and a second movable member configured to assume a position depending on a hydraulic pressure of the hydraulic fluid in the second pressure chamber, a hydraulic command circuit configured to provide the hydraulic fluid and to control the hydraulic pressure of the hydraulic fluid in the first pressure chamber and/or the second pressure chamber, having a switchable valve in fluid communication with the first pressure chamber, wherein the switchable valve is configured to be pilotable depending on the hydraulic pressure of the hydraulic fluid in the second pressure chamber.

Abstract: A hydraulic control unit (4) for an automatic transmission of a motor vehicle includes a volumetric flow rate control valve (49). The hydraulic control unit (4) is configured for delivering hydraulic fluid to an inlet (59) of the volumetric flow rate control valve (49). An outlet (31, 71) of the volumetric flow rate control valve (18, 49) is connected to a torque converter torus of the automatic transmission. In addition, the volumetric flow rate control valve (59) is configured for directing the hydraulic fluid across an orifice (66), so that the pressure of the hydraulic fluid is reduced and a constant flow of hydraulic fluid is feedable to a torque converter torus.

Abstract: A passive fluidic valve for fixed flow rate distribution comprising: a hollow valve body; a valve member for blocking a passage to one of the two outlets; and communications to impose the pressure of the upstream and downstream cavities at the ends of the valve member. The valve body further comprises: an inlet; a first outlet comprising a first restriction delimiting an upstream cavity and a downstream cavity; a second outlet comprising a second restriction delimiting an upstream cavity and a downstream cavity; and a first and a second cavity. The valve member further comprises: a first end in the first cavity delimiting a first and a third chambers, and a second end in the second cavity delimiting a second and a fourth chambers.

Abstract: Disclosed are various embodiments, aspects and features an oscillating track system that includes an oscillating track lock subsystem. The oscillating track system may include a track operable to rotate around a housing structure that is configured to receive an axle. While in operation, i.e. while the track is being rotated around the housing, the oscillating track system may be able to oscillate about the axle and, in doing so, incline or decline to accommodate undulating terrain. Advantageously, when stopped, the degree to which the oscillating track system has oscillated around the axle may be locked in place via an oscillating track lock subsystem comprised within the oscillating track system, thereby providing stability to the heavy equipment that includes the oscillating track system.

Abstract: A hydraulic component includes a piston and a cylinder with a piston receiving space in which the piston is displaceably arranged while defining a chamber, via which a pressure may be applied to a first end face of the piston, from a control chamber, via which pressure may be applied to a second end face of the piston which faces away from the first end face. A first hydraulic line and a second hydraulic line open into the chamber and a control line, which branches off from the first hydraulic line, opens into the control chamber. Due to the respective pressure ratio between the pressure in the chamber and the control chamber, the piston is displaceable from a closed position, in which the first and second hydraulic lines are fluidly decoupled, into an open position, in which the first and second hydraulic lines are fluidly connected, and vice versa.

Abstract: A hydraulic system for a machine includes a first pump, an implement pump, a control valve, and an auxiliary circuit. The first pump is configured to supply a first fluid flow to a first circuit, such as a steering circuit. The implement pump is configured to supply a second fluid flow to an implement circuit to actuate a primary implement function. The auxiliary circuit is configured to deliver fluid flow to actuate an auxiliary implement function. The auxiliary circuit is fluidly coupled to the implement circuit. The auxiliary circuit is also coupled to the first circuit by the control valve. The control valve is located downstream, in the direction of fluid flow, of the implement pump and the first pump. The control valve is configured to allow at least a portion of the first fluid flow to enter the auxiliary circuit and be delivered to the auxiliary implement function.

Abstract: A fill valve with pressure chamber having an open bottom end and a diaphragm at a top end such that falling water level in the toilet tank causes the diaphragm to flex in a first direction, thereby moving a sealing member to an open position, with a venturi in the fill valve keeping the sealing member in the open position until water refilling the tank causes the diaphragm to flex in a second direction, thereby moving the sealing member back to the closed position.

Abstract: Described herein is a flow divider that has two chambers defined by two diaphragms and a spool disposed through the diaphragms. The spool has two tapered nozzles that extend into outlets from each chamber. Within the spool are orifices for providing fluid communication from an inlet to each chamber and dividing the flow. The flow divider generally maintains consistent flow to each outlet even when there is downstream backpressure by being able to move away from the outlet with the increased pressure to further drive the opposite nozzle into the other outlet to reduce the flow at the other outlet to balance the pressure at each outlet.

Abstract: The invention relates to a pressure responsive respiratory valve apparatus for enabling positive pressure from a source of pressure to be applied to a user's airway, and allowing ingress of a breathable gas from an inlet port into a user's airway during inhalation and egress of expired tidal volume of air from the user's respiratory system to an exhalation port during exhalation. The invention minimizes rebreathing of expired gas and optimizes delivery of pressurized breathable gas by venting gas only during exhalation, as well as addressing important user considerations including minimizing noise, pressure swing, and size.

Abstract: A system for measuring temporally resolved through-flow processes of a fluid. The system includes an inlet, a main line comprising a line section, an outlet fluidically connected with the inlet via the main line, a displacement device arranged in the main line, a circuitous line which branches off the main line between the inlet and the displacement device and to enter the main line between the displacement device and the outlet, a pressure difference transducer arranged in the circuitous line, an evaluation and control unit which controls the displacement device, and a bypass line comprising a pump and a sensor. The bypass line branches off from the main line or from the circuitous line and ends at a same side of the displacement device and the pressure difference transducer to bypass the line section or the circuitous line from which the bypass line branches off.

Abstract: A hydraulic system for a work machine including a first and a second hydraulic actuator, and a first and a second hydraulic machine for providing hydraulic fluid to at least one of the first and the second actuator via a first and a second priority valve, respectively. The first and second priority valves are controlled by a pressure drop ?P over the inlet valve of the first actuator such that when ?P is lower than a first threshold value T1, a flow of hydraulic fluid is allowed only to the first actuator. The second priority valve allows a flow of hydraulic fluid to both the first and second actuator for a pressure drop higher than T1. The first priority valve is further configured to allow a flow of hydraulic fluid to both of the first and second actuator for a pressure drop higher than a second threshold value T2 which is higher than T1.

Abstract: A control system for a work implement of a machine having a frame is provided. The control system includes a fluid source configured to provide a supply of pressurized fluid and a pair of tilt cylinders in fluid communication with the fluid source. The tilt cylinders are configured to operatively tilt the work implement with respect to the frame of the machine. Each of the tilt cylinders has a rod end and a cap end between which a regenerative valve is disposed to selectively allow fluid communication between the rod end and the cap end of a corresponding tilt cylinder. The control system further includes a controller communicably coupled to each of the regenerative valves. The controller is configured to vary an amount of restriction in each regenerative valve to regulate an amount of fluid flowing between the rod end and the cap end of the corresponding tilt cylinder.

Abstract: A multi-leg discharge boot can include an inlet conduit and first and second outlet conduits separated by a junction portion. The inlet conduit includes an entry segment, a transition segment and a heel portion disposed therebetween. The inlet conduit can include an inlet end and a junction end. A junction portion is disposed at the junction end of the inlet conduit between first and second junction openings. The junction portion includes a substantially planar wall region that is substantially perpendicular to a main flow discharge axis.

Abstract: A hydraulic closed circuit system using a single rod type hydraulic cylinder prevents the hunting of a flushing valve due to a delay in response of the flushing valve and circuit pressure pulsations, thereby preventing a decrease in operability of the hydraulic cylinder. A single rod type hydraulic cylinder is connected to a hydraulic pump via two hydraulic lines. A flushing valve is connected between the hydraulic lines and a tank; and a control unit is configured to add a predetermined control parameter to a pressure in a lower-pressure hydraulic line of the two hydraulic lines. The magnitude of a pressure in the higher-pressure hydraulic line of the two hydraulic lines is compared with the magnitude of a compensation pressure to which the control parameter has been added, and the flushing valve is switched when the compensation pressure and the higher-pressure hydraulic line pressure are found to be reversed in magnitude.

Abstract: A fluid dispenser and method for simultaneously dispensing fluids from first and second cartridges. The fluid dispenser includes a base structure and a cartridge holding assembly mounted to the base structure. The cartridge holding assembly includes first and second cartridge holders. A linear drive mechanism is mounted to the base structure and coupled with first and second drive pistons force fluids through fluid passages. A dispensing portion is provided in first and second sections for easy cleaning.

Abstract: A combined pilot valve mechanism and a shower system are applied with the combined pilot valve mechanism. By switching to close the control hole, the first water diversion hole or the second water diversion hole to control the pressures of the pressure cavity, the valve spool is driven to move to alternately close the first outlet or the second outlet, so that the inlet waterway is switched to connect to the first outlet waterway, the first water diversion hole or the second water diversion hole. As the shower system is applied with a combined pilot valve mechanism, which utilizes the control hole to switch the waterways, thus preventing the main pipe from great water pressure. The diameter of the control hole can be smaller, so that the water pressure of the button mechanism can be ignored, only friction and light elastic force of the spring exist.

Abstract: A pilot valve switch mechanism and combined shower applied with the pilot valve switch mechanism includes a fixed portion and a valve spool. The fixed portion includes an inlet waterway, a first outlet waterway, a second outlet waterway and a control hole capable to connect to the outlet waterways. The first outlet waterway has a first outlet. The second outlet waterway has a second outlet. The valve spool is slidably assembled inside the fixed portion along the inlet waterway, with a slim hole connected to the inlet waterway. The valve spool and the fixed portion form a pressure cavity, which is connected to the control hole and the slim hole. The control hole controls the water pressure of the pressure cavity to drive the valve spool to close the first or second outlet, connecting the inlet waterway to the first or second outlet waterway. The control hole switches the waterways.

Abstract: A pilot valve switch mechanism of a shower system includes a fixed portion and a valve spool. The fixed portion is has an inlet waterway, a first and second outlet waterway and a control hole that can connect to the outlet waterways. The first outlet waterway has a first outlet and the second outlet waterway has a second outlet. The valve spool is slidably assembled inside the fixed portion vertically to the inlet waterway, and has a slim hole connected to the inlet waterway. The valve spool and the fixed portion form a pressure cavity. The control hole and the slim hole are connected to the pressure cavity. The pressure cavity is controlled by the control hole to drive the valve spool to move along the inlet waterway to close the first or second outlet, switching the inlet waterway to connect to the first or second outlet waterway.

Abstract: The present invention provides a fluid system (99) comprising a source of hydraulic fluid under pressure supplying a hydraulic fluid consumer (103) together with a valve passing fluid between said source and said fluid consumer (102). A first fluid compliance (105) is situated between said source (100) and said valve (102) and a variable restrictor (110) is provided for varying the cross sectional area available for flow of fluid through said valve (102) and is movable between a first position (A) with a larger said area and a second position (B) with a smaller said area. A bias means (117) biases said restrictor (110) towards said second position while an opening means (Fa) urges said restrictor (110) against said bias (117) when fluid flows through said valve (102) and a damping means (126) damps movement of said restrictor between said first and second positions and provides a resistance which increases with the velocity of displacement of said restrictor (110).

Abstract: A valve includes a housing defining a flow path having three ports. A door in the flow path selectably controls a flow through the flow path in response to a rotation of a lever. Three seal flanges, each define one of the three ports. The door has three selectable closed positions including a first port closed position, a second port closed position, and a third port closed position. A resilient seal is compressed between a sealing face of the door and each of the three seal flanges respectively in turn when the door is in each of the closed positions. The door has a first pivot axis and a second pivot axis parallel to and spaced from the first pivot axis. The door is alternatively rotatable about the first pivot axis and the second pivot axis to selectably close, each individually and separately in turn, the three ports.

Abstract: A method and apparatus for directing a flow of a fluid. The apparatus comprises a housing, an inlet port, a first outlet port, a second outlet port, and a moveable barrier. The housing has a chamber inside of the housing. The inlet port is in communication with the chamber. The first outlet port and the second outlet port are also in communication with the chamber. The moveable barrier is located in the chamber and rotatable about an axis between a closed position and an open position. The moveable barrier covers the second outlet port in the closed position. The open position allows a fluid to flow through the chamber and out of the second outlet port. The closed position reduces a flow of the fluid through the chamber and out of the second outlet port.

Abstract: A flow-through condition of a pressure fluid between first through third ports formed in a body of a residual pressure release valve is switched by a valve plug of a valve mechanism. Between an operating unit for driving the valve mechanism and the body, a converter is disposed for converting rotational movement of the operating unit into linear movement and transferring the linear movement to the valve plug. The converter includes a cylindrical shaped cam ring including a pin inserted through the valve plug, and inclined grooves for guiding the pin. The cam ring includes two divided bodies separable from each other in a radial direction.

Abstract: A system includes a controller. The controller is configured to monitor a catalytic activity within an ASC assembly that converts ammonia (NH3) within a fluid received from a three-way catalyst (TWC) assembly into nitrogen (N2) to determine whether the catalytic activity in the ASC assembly has aged. The controller is configured to adjust a temperature of the fluid flowing into an inlet of the ASC assembly by controlling an amount of oxidant injected via an oxidant injection system into the fluid upstream of the inlet of the ASC assembly based on a determination that the catalytic activity in the ASC assembly has aged.

Abstract: A four channel gas delivery system comprising: an inlet channel; four outlet channels; four flow sensors; four control valves, each valve being arranged so as to control the flow from the inlet channel through a corresponding one of the outlet channels; a flow ratio control system configured so as to control the flow from the inlet channel through the corresponding outlet channels so that the following flow ratios are controlled: (a) a first ratio of flows between the outlet channels of a first pair; (b) a second ratio of flows between the outlet channels of a second pair; and (c) a third ratio of flows between the first pair of outlet channels relative to the second pair of outlet channels; wherein the third ratio is controlled by generating at least one bias signal respectively applied to at least one pair of valves, the bias signal being a function of a predetermined set point of the third ratio and measured values of the third ratio.

Abstract: A flow divider assembly includes a dividing valve and a balancing valve. The dividing valve includes a dividing cavity configured to receive a flow of fuel and a piston device arranged within the dividing cavity and selectively positioned to divide the flow of fuel in the dividing cavity into the first dividing valve port and the second dividing valve port. The balancing valve is fluidly coupled to the dividing valve and configured to receive the first portion and the second portion of the flow. The balancing valve includes a balancing cavity and a balancing device arranged within the balancing cavity and selectively positioned to direct the first portion of the flow into the first balancing cavity port at a third pressure and the second portion of the flow into the second balancing cavity port at a fourth pressure such that the first pressure is approximately equal to the second pressure.

Abstract: A four channel gas delivery system comprising: an inlet channel; four outlet channels; four flow sensors; four control valves, each valve being arranged so as to control the flow from the inlet channel through a corresponding one of the outlet channels; a flow ratio control system configured so as to control the flow from the inlet channel through the corresponding outlet channels so that the following flow ratios are controlled: (a) a first ratio of flows between the outlet channels of a first pair; (b) a second ratio of flows between the outlet channels of a second pair; and (c) a third ratio of flows between the first pair of outlet channels relative to the second pair of outlet channels; wherein the third ratio is controlled by generating at least one bias signal respectively applied to at least one pair of valves, the bias signal being a function of a predetermined set point of the third ratio and measured values of the third ratio.

Abstract: Embodiments of the present invention generally relate to methods of controlling gas flow in etching chambers. The methods generally include splitting a single process gas supply source into multiple inputs of separate process chambers, such that each chamber processes substrates under uniform processing conditions. The method generally includes using a mass flow controller as a reference for calibrating a flow ratio controller. A span correction factor may be determined to account for the difference between the actual flow and the measured flow through the flow ratio controller. The span correction factors may be used to determine corrected set points for each channel of the flow controller using equations provided herein. Furthermore, the set points of the flow ratio controller may be made gas-independent using additional equations provided herein.

Abstract: A flow divider valve for a gas turbine engine fuel supply system is provided. The flow divider valve is configured, whenever fuel pressure at its inlet port is between a first predetermined pressure and a second predetermined pressure, to supply the fuel to a start nozzle manifold outlet port at a substantially constant flow rate, and to direct any fuel flow in excess of the substantially constant flow rate to a run nozzle manifold outlet port.

Abstract: The flow rate ratio controlling apparatus comprises differential pressure flow rate controllers (MFC1, MFC2) of the same type and a control processing mechanism (C) for giving commands to the flow rate controllers (MFC1, MFC2) to control them. The flow rate controllers (MFC1, MFC2) are provided with respective branched flow channels (BL1, BL2) branched from a terminal of a main flow channel (ML) in opposite directions. The flow rate controller (MFC1) arranged in the branched flow channel (BL1) is operated so that a detected pressure achieves a predetermined target pressure; a target flow rate for the flow rate controller (MFC2) arranged in the branched flow channel (BL2) is determined from the total measured flow rate and the predetermined flow rate ratio, and the flow rate controller (MFC2) is operated so as to achieve the target flow rate.

Abstract: A hydraulic grip-control unit provided with at least two gripping arms driven hydraulically to seize loads while cooperating with a striker arm of the grip with the control unit in use being connected hydraulically between a hydraulic fluid source under pressure and hydraulic cylinders each of which drives a gripping arm to form a closed supply circuit in which the source feeds fluid to the cylinders connected hydraulically in parallel and with the unit including a flow divider connected along said supply circuit between said source and said cylinders to apportion the flow of the circuit between the cylinders in parallel.

Abstract: A vacuum divider is positioned between rotor blades of a turbo-molecular pump and a vacuum manifold formed from multiple vacuum chambers. A first coupling aperture passes through the vacuum divider and allows gas to pass from a first of the multiple vacuum chambers to the turbo-molecular pump. A second coupling aperture passes through the vacuum divider and allows gas to pass from a second of the multiple vacuum chambers to the turbo-molecular pump.

Abstract: A system for dividing a single flow into two or more secondary flows of desired ratios, including an inlet adapted to receive the single flow, at least two secondary flow lines connected to the inlet, an input device adapted to receive at least one desired ratio of flow, at least one in-situ process monitor providing measurements of products produced by each of the flows lines, and a controller connected to the input device and the in-situ process monitor. The controller is programmed to receive the desired ratio of flow through the input device, receive the product measurements from the in-situ process monitor, and calculate a corrected ratio of flow based upon the desired ratio of flow and the product measurements. If the product measurements are not equal, then the corrected ratio of flow will be different than the desired ratio of flow.

Abstract: A flow regulator with pressure relief combination valve is disclosed which can include a housing and a valve assembly. The housing can have a chamber and four ports. A cage, having a plurality of cross holes, is supported by the housing. A hollow spool is slidably disposed within the cage and is biased to engage the cage. A shoulder of the cage and a counterbore of the spool cooperate to interferingly retain an insert. A poppet is slidably disposed inside of the cage. The valve assembly includes an adaptor, a spring disposed within the adaptor, a guide disposed between the spring and the poppet, and an adjuster adjustably secured to the adaptor. The spring is arranged to bias the poppet against a seat via the guide. The adjustor is movable to adjust the position of the spring.

Abstract: A fluid metering device that preferably includes a substantially linear series of intermeshing gears. The fluid metering device includes an inlet port adjacent the intermeshing portion of each pair of gears within the series adjacent the point at which the pair of gears diverge. The device further includes an discharge port adjacent the intermeshing portion of each pair of gears within the series adjacent the point at which the pair of gears converge. The device is configured to convey liquid from a main inlet stream of liquid, through the inlet ports, and out the discharge ports at substantially equal rates. The device preferably includes a pressure balance inlet port and a pressure balance discharge port adjacent the exterior portion of each end gear within the series of gears for balancing forces exerted on the end gear by liquid passing through the various inlet and discharge ports.

Abstract: The invention provides a method and apparatus to control fluids such as process gases into two or more substrate process chambers. In one aspect, the gas flow from a first supply to a first processing region is used to control the gas flow of a second supply to a second processing region where the total gas flow is about equal to the total of the gas flows into both the first and second processing regions. In another aspect, the gas flow rate from the first supply for the first processing region is about equal to the gas flow rate for the second supply to the second processing region.

Abstract: A gas-line system used for a semiconductor-manufacturing apparatus with at least two reactors, includes at least one gas source; a flow-divider means including an input port on the primary side, which receives a source gas from the gas source, and an output port on the secondary side, which outputs an inputted source gas by equally distributing it. The input port on the primary side is connected with the gas source and the output port on the secondary side is connected with the reactors; and one exhaust pump for exhausting gases within the reactors, which is connected with the reactors. It is desirable that the gas-line system is provided between the reactors and the exhaust pump, and an APC is included for controlling pressure for each reactor.

Abstract: A divider combiner valve using only one spool without any springs. The correct holes open and close by ball and seat type check valves although these could be a poppet or disk as well and these valves may be located in the valve body, the spool, or both. These are simple and reliable. There is no chance of the holes not being in the correct location. Since there is only one spool, contamination cannot keep the spools from shifting into their correct relationship with each other. The extra pressure drops, needed to overcome the spring forces in the earlier designs, have been eliminated all together. Also, the number of spools has been reduced from two or three down to a single spool, thus reducing the cost to manufacture the finished valve. Because there is only one spool, clearances are closer. There is less internal leakage, more accuracy while the cylinders are in motion. This closer clearance tends to lock the loads rather than transfer oil from one cylinder to the other.

Abstract: The invention provides a method and apparatus to control fluids such as process gases into two or more substrate process chambers. In one aspect, the gas flow from a first supply to a first processing region is used to control the gas flow of a second supply to a second processing region where the total gas flow is about equal to the total of the gas flows into both the first and second processing regions. In another aspect, the gas flow rate from the first supply for the first processing region is about equal to the gas flow rate for the second supply to the second processing region.

Abstract: A fluid pump has a housing (4), a main output port (10), an auxiliary output port (14) and a priority pressure regulating valve contained with the housing (4). The priority pressure regulating valve has a spool (20) to direct fluid to one or both of the of the output ports (10,14), a force means (34,36) associated with the spool to bias the spool (20) to a position where it causes fluid to flow to the main output port (10) exclusively, and a pressure release means (40) which enables the spool (20) to move to a position where it permits fluid to flow to the auxiliary output port (14) when the pressure at the main output port (10) is at or greater than a predetermined pressure.

Abstract: A proportional flow divider valve is configured only as a controlled flow valve by using a first spool in a valve body or as both a free flow valve as well as control flow valve by using a second spool in the valve body. The second spool is provided with a return fluid check valve which is integral therewith and disables the control flow mode when pressure is applied to a piston surface on the return flow check valve. The return flow check valve is configured as a split sleeve which fits around a lateral inlet passage through the second spool and is urged to close the lateral inlet passage under pressure from returning hydraulic fluid. Normally, the split sleeve is axially biased by a vented coil spring to open the lateral inlet passage in the spool.

Abstract: A priority type dividing valve includes a housing, a spool slidably situated inside the housing and having a damper orifice, and a damper chamber formed between the spool and the housing for providing a resistance to the movement of the spool. The damper orifice is changeable and includes a small hole and notches, by which the damping effect is changed. At the time of a steering operation, the notches do not operate to increase the damping effect to thereby provide the sufficient holding force to suppress the vibration. When the spool is moved, the notches are actuated to reduce the damping effect to reduce the dragging resistance. Thus, the quick response is obtained.

Abstract: A fluid regulator has two valve bodies (24, 25) placed opposite and cooperating with two openings (22, 23) for controlling the fluid flow from an inlet chamber to two outlet chambers. A spindle (34) interconnects the valve bodies (24, 25) at a predetermined mutual distance forming a spindle assembly. Each valve body and each opening form a passage (30, 31), the sum of the areas of the two passages being constant, but adjustable by a handle (9). The spindle assembly is freely moveable in the axial direction under the influence of the pressures across the openings acting upon the valve bodies so that the pressure drop times the area of each opening is equal for the two openings, and the fluid flow from the inlet chamber is divided into two fluid flows to the outlet chambers. The fluid regulator is intended to be used in an agricultural sprayer for distribution of a fluid composition to soil to be treated. The agricultural sprayer comprises a tank (2), a pump (6), the fluid regulator, and a plurality of nozzles.

Abstract: An improved valve of the class referred to as capacity fuse valves which closes in response to passage of a total fluid flow volume through the valve to the valve outlet. The incoming fluid entering the valve inlet is split into a main flow that passes through a variable main flow metering port to the valve outlet and a control flow that passes through a variable control flow metering orifice and is utilized to close the valve upon passage of a predetermined main flow volume (main flow valve closure volume) through the valve. The areas of the main flow metering port and the control flow metering orifice are varied in response to the fluid inflow rate into the valve inlet and/or fluid temperature in such a way as to maintain a substantially fixed ratio between the main flow rate and the control flow rate, and thereby a substantially constant main flow valve closure volume, over a range of fluid inflow rates and/or temperatures.

Abstract: A hydraulic flow control valve assembly comprises an inlet port for input fluid flow from a pump, a first outlet port for output fluid flow to a power steering unit, a second-outlet port for output fluid flow to an accumulator of a braking system, and an excess flow port for output fluid flow to other services or a tank. A flow control valve controls the fluid flow from the inlet port to the outlet ports and the excess flow port, and a load sensing port communicates a load-dependent pressure signal from the power steering unit to the valve so as to provide priority fluid flow to the power steering unit. A pilot valve is provided for cutting off the load-dependent pressure signal when the pressure within the accumulator falls below a predetermined value so as to provide for fluid flow from the valve to the accumulator, and in addition a pressure difference sensing arrangement communicates the pressure difference across a restrictor to the valve so as to provide fluid flow to the accumulator.

Abstract: The steering of a motor vehicle is assisted by a power steering means including a hydraulic distributor which is supplied with pressurized fluid by a pump from a reservoir. The vehicle also has a clutch having hydraulic servo assistance supplied by a servo unit. The distributor of the power steering system and the clutch servo unit are both supplied with hydraulic fluid from the same pump and reservoir, through a distribution unit which is so arranged that the power steering system has first call at all times on the available pressurized fluid. The distributor unit includes a flow distributing valve, fed from the pump and dividing the flow between a main circuit which leads to the steering distributor, and a secondary circuit which leads to the servo unit. A pressure regulating valve is connected to both the main circuit and the secondary circuit so as to regulate the pressure in each of these circuits according to the demand of the power steering system.

Abstract: A compact and light flow dividing pump is disclosed. The pump includes a housing having an end plate attached to one end thereof. The end plate has a fluid suction port and a pair of fluid discharge ports. A pump mechanism is provided in the housing for receiving fluid through the suction port and discharging the received fluid through the discharge ports. A plurality of discharge passages are formed in the end plate between the pump mechanism and the discharge ports. A control valve is also provided in the end plate to control the flow rate of fluid in the discharge passages.

Abstract: An improved valve of the class referred to as capacity fuse valves which closes in response to passage of a total fluid flow volume through the valve to the valve outlet. The incoming fluid entering the valve inlet is split into a main flow that passes through a variable main flow metering port to the valve outlet and a control flow that passes through a variable control flow metering orifice and is utilized to close the valve upon passage of a predetermined main flow volume (main flow valve closure volume) through the valve. The areas of the main flow metering port and the control flow metering orifice are varied in response to the fluid inflow rate into the valve inlet and/or fluid temperature in such a way as to maintain a substantially fixed ratio between the main flow rate and the control flow rate, and thereby a substantially constant main flow valve closure volume, over a range of fluid inflow rates and/or temperatures.

Abstract: A charge pressure priority valve for supplying a flow of sufficient pressure to energize an auxiliary implement while supplying a nearly constant pressure flow to a hydrostatic fluid circuit includes a valve body having an interior bore with a pump inlet passage for communicating a flow from a hydraulic pump thereto. A main flow outlet passage extends from the interior bore for supplying fluid to the hydraulic fluid circuit and has a main flow feedback passage interconnecting the main flow outlet passage and the interior bore. An auxiliary flow outlet passage extends from the interior bore for supplying a flow of sufficient pressure to energize an auxiliary implement. A valve spool is disposed within the interior bore and defines a central chamber intermediate a pair of spaced apart end chambers in the bore, with one of the pair of end chambers being isolated from the other of the pair of end chambers.