Abstract: Disclosed is a fuel conveying device including a valve housing in which a pressure release valve and a non-return valve are arranged parallel to one another, the pressure release valve having a first inlet, which downstream of a valve seat opens into a valve chamber in which a valve body is movably arranged and which is in fluid connection with a second inlet for the non-return valve via a first outlet. The device improves the control response of the pressure release valve by providing the first outlet at the periphery of the valve chamber and in the axial direction with respect to a valve axis such that when the pressure release valve is open the flow from the valve chamber into the second inlet is a substantially radial flow.

Abstract: Disclosed is a differential pressure volume flow air sampler that measures temperature in a collection cavity, differential pressure between the measured ambient pressure and air pressure in a collection cavity. These parameters are used to calculate the volume air flow across a collection disk using a processor which adjusts a blower to maintain a substantially constant volume air flow through said air sampler from the surrounding atmosphere.

Abstract: In various exemplary embodiments described herein, a system and related method to provide airflow management system in a substrate production tool includes a housing to couple the substrate production tool to a fan filter unit to provide filtered air to the housing, a facility connection to couple the substrate production tool to a reduced pressure exhaust mechanism, a substrate transfer section coupled below the housing and in airflow communication with the facility connection, and a substrate process area coupled to the substrate transfer section by one or more substrate transfer slots. A chamber substantially containing the substrate transfer section and the substrate process area is coupled to the housing to receive the filtered air and to the facility connection to provide an exhaust for excess gas flow. The chamber maintains a low pressure in the substrate process area relative to the substrate transfer section.

Abstract: A fluid sprayer is provided and includes a fluid pump assembly having an outlet path and a motor assembly configured to drive the fluid pump assembly to pressurize fluid. The motor assembly is controlled by a throttle mechanism. The fluid sprayer also includes a fluid pressure control assembly including a mechanical pressure transducer configured to be displaced as a function of fluid pressure in the outlet path. The fluid pressure control assembly is configured to control the throttle mechanism as a function of displacement of the mechanical pressure transducer.

Abstract: A valve device includes a control valve for manipulating a communication between a first fluid channel and a second fluid channel. The valve device further includes a pressure sensor for detecting pressure in the first fluid channel. The pressure sensor is provided on a side face defining the first fluid channel. The pressure sensor has a pressure detection face directly opposed to the first fluid channel. The pressure detection face is substantially in parallel with a first axis of the first fluid channel.

Abstract: An exhalation valve assembly that controls the pressure of exhaled gas in a ventilation system is described. The exhalation valve assembly includes an actuator module that may be fixed to the ventilation system and a valve module, removable for cleaning or disposal, through which the exhaled gas flows and that controls the pressure and release of the exhaled gas to the environment. Other components may also be incorporated into the assembly including a filter module, a flow meter and a condensate trap.

Abstract: A fueling control system for providing fuel from a vehicle to an aircraft, and a method of providing fuel from a fuel vehicle to an aircraft are disclosed herein. The fueling control system includes a pressure transducer for sensing back pressure in a fluid path to a fuel tank of an aircraft, and a digital controller coupled to the pressure transducer for receiving the back pressure in the fluid path and controlling fuel flow in the fluid path to the aircraft. The method includes the steps of sensing back pressure in a fluid path from the aircraft; receiving the sensed back pressure by a digital controller; and controlling fuel flow to the aircraft in the fluid path based on the sensed back pressure.

Abstract: An exhaust gas purification device of an internal combustion engine is taught that preferably include a storage tank storing an exhaust gas purification solution that is injected into an exhaust passage of the internal combustion engine, a solution supply line that is constructed to introduce the exhaust gas purification solution from the storage tank to the exhaust passage, a supply pump disposed on the solution supply line, and a gas-liquid selection device. The gas-liquid selection device is constructed to selectively introduce the exhaust gas purification solution and air into the solution supply line.

Abstract: A bellows type water tap which can control the water outflow and consume no electricity, consists essentially of a main valve, a guide pipe, a foot pump, a bellows, one first regulating valve, one second regulating valve, a safety spring, a push rod, an adjusting block, a handle, a needle valve and a diaphragm. When the bellows is inactivated, pressure on above of the diaphragm is higher than the bottom and seals the water outlet and when bellows is expanded, the reaction presses down the needle valve and opens a water passage, lowering the pressure of upper portion of the diaphragm and opening the water outlet for water discharging.

Abstract: A vacuum system for semiconductor fabrication. The system includes a vacuum chamber for performing a semiconductor fabrication process, a vacuum source, and a piping system fluidly connecting the vacuum chamber to the vacuum source. In one embodiment, the piping system is configured without a horizontal flow path section of piping. In some embodiments, the piping system includes a first piping branch and a second piping branch. The first and second piping branches preferably have a symmetrical configuration with respect to the vacuum source. In yet other embodiments, the first and second piping branches preferably each include a throttle valve.

Abstract: A hydraulic machine has at least one working chamber (11) of cyclically changing volume, and low- and high-pressure valve means (15, 13) to control the connection of the or each chamber to low- and high-pressure lines (16, 14) respectively. A method of operating the machine includes holding the low-pressure valve means (15) closed during at least an entire cycle of the chamber (11), starting at minimum chamber volume, such that gas dissolved in liquid in the chamber is released therefrom during an expansion of the chamber volume and re-dissolved during a reduction thereof.

Abstract: The present invention refers to a filling machine for highly compressed gas, comprising: an electric driver, a reduction gearbox, a driving shaft, an eccentric driving mechanism, an high-compression mechanism, a cylinder manifold and a framework, wherein the eccentric driving mechanism consisting of at least two eccentric driving wheels is mounted on the driving shaft, the high-compression mechanism consists of at least two oscillating type compression gas cylinders connected in series by a plurality of one-way valves and hoses, and a slip ring, a piston rod and a piston are joined into an integral block wherein the slip ring is fitted over the eccentric driving wheel and the other end of the piston rod is connected to a gas cylinder barrel so as to be fitted over a supporting shaft; the supporting shaft is provided in the framework and the framework is provided with a cylinder manifold on the top thereof, which is provided with a pressure switch, a pressure gauge and a safety valve; the outer circumferential

Abstract: A fluid distribution system for a machine tool is disclosed. The system includes a return and a filter in fluid communication with the return. A heat exchanger is in fluid communication with the filter. A pump is in fluid communication with the heat exchanger and a drive motor drives the pump. A valve is in fluid communication with the pump and a fluid distribution outlet. A controller is operatively connected to the drive motor and the valve.

Abstract: A vapor delivery system for delivering a steady flow of sublimated vapor to a vacuum chamber comprises a vaporizer of solid material, a mechanical throttling valve, and a pressure gauge, followed by a vapor conduit to the vacuum chamber. The vapor flow rate is determined by both the temperature of the vaporizer and the setting of the conductance of the mechanical throttle valve located between the vaporizer and the vacuum chamber. The temperature of the vaporizer is determined by closed-loop control to a set-point temperature. The mechanical throttle valve is electrically controlled, e.g. the valve position is under closed-loop control to the output of the pressure gauge. In this way the vapor flow rate can be generally proportional to the pressure gauge output. All surfaces exposed to the vapor from the vaporizer to the vacuum chamber are heated to prevent condensation.

Abstract: Apparatus for maintaining differential internal fluid pressure in a dual fluid chamber object where it is desired for one chamber to have greater internal pressure than the other includes a sensor for generating a differential signal indicating the difference in pressure between the chambers, a pressure sensor for generating a pressure signal indicating the pressure inside the chamber desired to have less pressure, a comparator for generating a first output when the differential signal is less than a predetermined minimum differential value, a second comparator for generating a second output when the pressure signal is less than a predetermined minimum pressure value, where the predetermined minimum pressure value biased by the first output, and blowers coupled to the respective chambers and responsive to said first and second outputs respectively.

Abstract: Method for controlling a compressed air unit which consists of several compressed air networks (2 and 3) having at least one commonly controllable component, characterised in that, on the basis of measurement data of at least one of the above-mentioned compressed air networks (2 and 3), at least the above-mentioned common component (11) is controlled by at least one controller (20).

Abstract: A flow control apparatus for a pressure system includes a chamber, a pump for providing a flow from the chamber and a valve positioned between the chamber and the pump for providing regulation of the flow. The valve is continuously operable between a fully open and a fully closed position. A motor continuously operates the valve between the open and closed positions. The motor includes a position encoder including an encoder output. A sensor continuously monitors the flow and includes a sensor output. A system interface receives the encoder output and the sensor output. The system interface processes the position encoder output to determine position and velocity of the motor and using at least the sensor output, position and velocity produces control signals for the motor. A servo driver receives the control signals from the system interface and continuously controls the motor in a closed-loop manner to regulate the flow.

Abstract: A hydraulic pressure control apparatus includes a primary regulator valve that regulates a pressure discharged from an oil pump to form a line pressure that is used as an original pressure for a hydraulic pressure that is supplied to each element, and a secondary regulator valve that regulates a hydraulic pressure downstream of the primary regulator valve to form a secondary pressure. Two pilot pressures (first modulator hydraulic pressure, control hydraulic pressure from a duty solenoid) are supplied to the secondary regulator valve. The secondary regulator valve is configured in such a manner that when one of the pilot pressures changes, a change in the one of the pilot pressures is absorbed by the other pilot pressure.

Abstract: A method and apparatus for cooling a clutch of a motor vehicle by controlling a valve through which a coolant circuit is coupled with a pump circuit. The valve includes a control piston that is movable at least to actuate a connection between the coolant circuit and the pump circuit.

Abstract: The present invention provides a new and unique pressure regulator featuring a body member for regulating the pressure of a fluid flowing therein, the body member having two ends, one end for receiving the fluid and another end for providing pressure regulated fluid; and a quick-disconnect device arranged on at least one end for coupling the body member to a corresponding quick-disconnect device that forms part of a device that either provides the fluid or receives the pressure regulated fluid. The pressure regulator may have two quick-disconnect devices, each quick-disconnect device being arranged on a respective end of the body member.

Abstract: A pressure washer is provided including a housing. A pump is contained within the housing for pressurizing fluid received through a water inlet port and for pumping the pressurized fluid through an outlet port. An application wand is connected to the water outlet for outputting a pressurized stream of fluid. At least one wheel is supported on the housing so as to enable rolling movement of the housing. A first handle is arranged on the housing for movement between a retracted position in which a gripping portion of the handle is arranged relatively closer to the housing and an extended position in which the gripping portion of the handle is arranged relatively further away from the housing.

Abstract: An exhaust gas purification device of an internal combustion engine is taught that preferably include a storage tank storing an exhaust gas purification solution that is injected into an exhaust passage of the internal combustion engine, a solution supply line that is constructed to introduce the exhaust gas purification solution from the storage tank to the exhaust passage, a supply pump disposed on the solution supply line, and a gas-liquid selection device. The gas-liquid selection device is constructed to selectively introduce the exhaust gas purification solution and air into the solution supply line.

Abstract: In the disclosed secondary air supply system, an on-off valve (13) is driven by the discharge pressure of an air pump (12). A diaphragm chamber (44) is arranged in the neighborhood of a discharge outlet (54), and a part of the discharge air flows directly into the diaphragm chamber (44). Thus, the on-off valve (13) is positively operated even at high places with low atmospheric pressure and has a fast open/close response. As an electromagnetic actuator is not used to drive the on-off valve (13), the voltage supplied to the air pump (12) (DC motor (29)) does not drop inconveniently, and at the same time, the cost is reduced. Further, the number of the lead wires (65) is reduced.

Abstract: A valve mechanism to control fluid flow between a fluid pumping device and a system that includes an inlet from the fluid pumping device, a first valve, a second valve, a first outlet fluidly connected to the system, and a second outlet. The first valve prevents backflow of fluid when the fluid pumping device discontinues pumping fluid to the system. The second valve checks fluid flow through the valve to the first outlet when fluid pressure at the inlet is less than a first predetermined pressure. The second valve permits fluid flow from the pump through the valve to the system only when fluid pressure at the inlet is greater than the first predetermined pressure. The second valve prevents fluid pressure in the system from substantially exceeding a second predetermined pressure when the pumping device is not pumping fluid to the system.

Abstract: A gas-supplying apparatus for a fuel cell, which generates electric power due to an electrochemical reaction between oxygen and hydrogen, during which water is produced, and which has respective gas passages within the duel cell according to the present invention comprises a gas-sucking means which supplies supply gas of the fuel cell provided on the downstream of the gas passage in a gas-flowing direction; and a pressure controller which controls the pressure of the supply gas within the fuel cell, provided on the upstream of the gas passage, whereby the water produced during the course of said electrochemical reaction is discharged. When the cell voltage is decreased, the apparatus of the present invention recovers the cell voltage by making the negative pressure large to accelerate the discharge of the produced water with minimized power consumption.

Abstract: A pump module for mounting in a fuel tank of an automotive fuel supply system includes a housing, a fuel pump mounted in the housing, a pressure regulator conduit mounted in the housing, and a pressure regulator. The housing includes a module inlet and a module outlet in fluid communication with the module inlet. The fuel pump is in fluid communication with the module inlet. The pressure regulator conduit is in fluid communication with the fuel pump. The pressure regulator conduit includes a regulator inlet, regulator outlet, and a receptacle in fluid communication with the regulator inlet and the regulator outlet. The receptacle includes a first surface surrounding an axis, and a second surface surrounding the axis and the first surface to provide a void between the first surface and the second surface. The pressure regulator is mounted in the receptacle to selectively open fluid communication between the regulator inlet and the regulator outlet.

Abstract: A flow regulator for a water pump, comprising a valve body, a left piston, a right piston, a connecting rod, a spring, and a conduit. The valve body is roughly shaped like a cross, having a passageway in a vertical direction and a left tube and a right tube in a horizontal direction, respectively enclosing a left chamber and a right chamber. The left and right pistons are glidingly movable inside the left and right tubes, respectively, being connected by the connecting rod. The spring is inserted between the right piston and a right cap on the right tube. The conduit is placed inside a side wall of the left tube, transmitting water pressure from the passageway to the left chamber. The control element is by water pressure pushed towards the passageway, narrowing the passageway. This is countered by an elastic force of the spring, so that controlled water flow and pressure are achieved.

Abstract: A pump module for mounting in a fuel tank of an automotive fuel supply system includes a housing, a fuel pump mounted in the housing, a pressure regulator conduit mounted in the housing, and a pressure regulator. The housing includes a module inlet and a module outlet in fluid communication with the module inlet. The fuel pump is in fluid communication with the module inlet. The pressure regulator conduit is in fluid communication with the fuel pump. The pressure regulator conduit includes a regulator inlet, regulator outlet, and a receptacle in fluid communication with the regulator inlet and the regulator outlet. The receptacle includes a first surface surrounding an axis, and a second surface surrounding the axis and the first surface to provide a void between the first surface and the second surface. The pressure regulator is mounted in the receptacle to selectively open fluid communication between the regulator inlet and the regulator outlet.

Abstract: The present invention relates to a process of utility conservation control methodology within a fluid pumping distribution system. With fluid flowing through a distribution grid, the pressure at any given point becomes a function of system flow. At a specific flow rate, the pressure at this point is a function of flow rate. This invention is a process that continuously adjusts the pressure requirement for the pumping system by varying the pump speed according to the system head curve details. This invention produces several benefits for a fluid distribution system including reducing utility costs and equipment aging.

Abstract: A more efficient compressor control system and a more efficient method of operating a multiple throttled inlet rotary screw compressor system includes the method and control system which are a function of both the actual system pressure and volumetric flow rate. Specifically, a throttled inlet rotary screw compressor is loaded or unloaded from the compressor system after sensing the actual system pressure and calculating the system's actual volumetric flow rate. The control system calculates the system's volumetric flow rate by sensing each loaded throttled inlet rotary screw compressor's inlet pressure and converting those inlet pressures to outlet volumetric flow rates. The aggregate of the loaded compressors' volumetric flow rates represents the actual system flow rate.

Abstract: A flow regulator for a water pump, comprising a valve body, a control element, a tube, a spring, and a connecting pipe. The valve body is roughly shaped like a cross, enclosing a first chamber and a second chamber in a vertical direction and having a passageway in a horizontal direction. The control element is glidingly movable in the vertical direction in the first chamber. The tube is placed in said second chamber. The spring is inserted between the control element and the tube and pushes the control element to perform a vertical movement. The connecting pipe is connected with the first tube, transmitting water pressure from a supply pipe to the first tube. The piston block is pushed inward by the water pressure, narrowing the passageway, while being pressed outward by the elastic force, so that controlled water flow and pressure in the supply pipe are achieved.

Abstract: To enhance productivity and maintainability of an internal combustion engine for a vehicle with a torque converter. An internal combustion engine with a torque converter includes a single feed pump for supplying both a working oil for a torque converter and a lubricating oil for the engine with an oil filter in communication with a discharge port of the feed pump being fitted to a crankcase cover. An outlet oil passage of the oil filter is branched into a low-pressure oil passage provided with an orifice and an oil passage for supplying a high-pressure control oil to changeover valves of a transmission. The high-pressure oil passage is provided concentratedly in the crankcase cover.

Abstract: During the pumping of corrosive gases, it is advantageous to admit a seal gas to endangered pumping chambers at a lower flow rate and a higher pressure than the corrosive gases. Inert gas from a supply (3) has its pressure reduced by a pressure reducer (6). An on/off valve (7) controls a flow of the inert gas through a flow restriction (8) which restricts the flow of inert gas to appropriate sealing gas rates at an outlet (4). After pumping the corrosive gas, a control valve (12) in a bypass line (11) causes the inert gas to be supplied to the outlet (4) at a higher flow rate for purging the pump.

Abstract: A pump assembly for a pressurized water system includes a pressure sensitive switch (27) arranged to monitor the water pressure in a pipe (14) extending between a water delivery pump (13) and a tap (15), the switch (27) controlling operation of the pump (13) dependent upon pressure in the pipe (14). A timer switch (30) is disposed in series with the pressure sensitive switch (27), to inhibit pump operation other than for a limited period of time following triggering of the timer switch (30).

Abstract: A flow regulator for a water pump, comprising a valve body, a piston block, a spring, a connecting pipe, and a rod. The valve body is roughly shaped like a cross, having a passageway in a vertical direction and a first tube and a second tube in a horizontal direction. The piston block is glidingly movable in the horizontal direction in the first tube. The spring is disposed in the second tube, having ends that are fastened to inner and outer holding plates. The connecting pipe is connected with the first tube, transmitting water pressure from a supply pipe to the first tube. The rod connects the inner holding plate and the piston block to allow the water pressure and the elastic force to balance each other. The piston block is pushed inward by the water pressure, narrowing the passageway, while being pressed outward by the elastic force, so that controlled water flow and pressure in the supply pipe are achieved.

Abstract: The present invention is a more efficient compressor control system and a more efficient method of operating a multiple compressor system because the method and control system are a function of both the system pressure and the volumetric flow rate capacity of the system. Specifically, a compressor is loaded or unloaded from the compressor system after sensing the actual system pressure and volumetric flow rate capacity. The inventor(s) of the present invention have discovered that it is more efficient to control the compressors upon sensing both the pressure and volumetric flow rate capacity of the fluid. Moreover, controlling the compressor system in response to sensing both the pressure and volumetric flow rate capacity of the fluid insures that the appropriate blend of compressors is loaded to the system in order to produce the most suitable pressure and volumetric flow rate capacity.

Abstract: The present invention is a more efficient compressor control system and a more efficient method of operating a multiple compressor system because the method and control system are a function of both the system pressure and the volumetric flow rate capacity of the system. Specifically, a compressor is loaded or unloaded from the compressor system after sensing the actual system pressure and volumetric flow rate capacity. The inventor(s) of the present invention have discovered that it is more efficient to control the compressors upon sensing both the pressure and volumetric flow rate capacity of the fluid. Moreover, controlling the compressor system in response to sensing both the pressure and volumetric flow rate capacity of the fluid insures that the appropriate blend of compressors is loaded to the system in order to produce the most suitable pressure and volumetric flow rate capacity.

Abstract: A container is formed of a vessel, an air pump, a pressure triggering switch, and a battery set. The vessel is formed of a cylindrical main body and a lid for covering the open top of a receiving cell of the vessel. The air pump, the pressure triggering switch, and battery set are disposed in the lid for keeping the air pressure in the receiving cell at a desired level. When the air pressure in the receiving cell is so changed as to be higher than the desired level, the air pump is activated by the pressure triggering switch to draw the excess air out of the receiving cell until the air pressure in the receiving cell is equal to the desired level. The air pump is then automatically deactivated by the pressure triggering switch.

Abstract: The present invention relates to a process of utility conservation control methodology within a fluid pumping distribution system. With fluid flowing through a distribution grid, the pressure at any given point becomes a function of system flow. At a specific flow rate, the pressure at this point is a function of flow rate. This invention is a process that continuously adjusts the pressure requirement for the pumping system by varying the pump speed according to the system head curve details. This invention produces several benefits for a fluid distribution system including reducing utility costs and equipment aging.

Abstract: A leak detector includes an off-center mounted metering pin cooperating with a single cross-hole in a poppet valve to accommodate adjustment of the flow rate past the metering pin by rotating the poppet valve about its longitudinal axis. A flow director, cooperating with the poppet valve, directs all flow into the leak detector directly into the line during initial flow into the leak detector. A piston, responsive to line pressure, is sized smaller in diameter than the poppet valve to cause the line pressure to increase rapidly and significantly during the leak sense mode and which size permits reduction in size and weight of the leak detector.

Abstract: A fuel supply apparatus for engines of a multi-point injection system using fuel tanks of many sizes and shapes is disclosed. In the fuel supply apparatus, a pump device 10 is constructed of an electric motor-driven fuel pump 10, a fuel filter 49, and a pressure regulator 21, which are contained in a housing integrally constructed of a first and second cases 11 and 12. A suction port 15 of the pump device 10 communicates with a suction opening 24 of the fuel pump 19, while a discharge outlet portion 26 of the pump device 10 communicates with a discharge port 17 through the fuel filter 49. The discharge port 17 communicates with an inlet of the pressure regulator 21. An outlet of the pressure regulator 21 communicates with a return port 16 of the pump device 10.

Abstract: A flow regulator for a water pump, working in conjunction with a water pump, having a pump, an inlet pipe, an outlet pipe with a water pressure, and a container. The flow regulator comprises: a main body, installed at the inlet pipe and having a passageway for water flowing through the inlet pipe; a chamber inside the main body; an entrance on the main body, conducting the water pressure in the outlet pipe to the chamber; a control element, mounted inside the chamber and glidingly movable therein back and forth; a spring; and an adjustable cover, mounted on the main body and connected to the spring. The water pressure causes the control element to move within the chamber, resulting in the passageway to be narrowed. The spring counters the water pressure, such that when the water pressure decreases the passageway is widened. By varying the position of the adjustable cover, the elastic force of the spring is adjusted.

Abstract: A flow regulator for a water pump, working in conjunction with a water pump, having a pump, an inlet pipe, an outlet pipe with a water pressure, and a container. The flow regulator comprises: a main body, installed at the inlet pipe and having a passageway for water flowing through the inlet pipe; a chamber inside the main body; a connecting pipe, conducting the water pressure in the outlet pipe through an entrance on the main body to the chamber; and a control element, mounted inside the chamber and glidingly movable therein back and forth. The water pressure causes the control element to move within the chamber, adjusting the width of the passageway and controlling the flow of water through the water pump. This allows to extend start-stop cycles of the pump.