Abstract: In a method of removing particles in an injector of a diesel engine, a stop of the diesel engine may be recognized. An injection signal may be inputted into the injector of the stopped diesel engine. A control valve of the injector may be moved in a low-pressure passage by the injection signal to remove the particles accumulated on an inner wall of the low-pressure passage. Thus, a malfunction of the control valve caused by the particles may be previously prevented.

Abstract: A method of preventing washer fluid freezing is provided. The method includes performing hose residual washer fluid removal control that removes residual washer fluid of a hose which is a movement path of washer fluid after a spray of the washer fluid by operation of a pump washer fluid device.

Abstract: A method for operating a fuel injector of a gas turbine engine includes injecting a hydrogen-based primary fuel from a primary fuel passage of the fuel injector directly into a combustion chamber. The primary fuel passage includes a primary fuel outlet located within the combustion chamber. The method further includes injecting a second fuel, different than the hydrogen-based primary fuel, from a secondary fuel passage of the fuel injector into a hood chamber separated from the combustion chamber by a bulkhead. The secondary fuel passage includes a plurality of secondary fuel outlets located within the hood chamber.

Abstract: The present disclosure discloses a waterway switching mechanism comprising a mounting portion, a water dividing plate, and a driving mechanism. The mounting portion comprises at least one water dividing passage, and the water dividing plate cooperates with the at least one water dividing passage to switch a waterway through rotation of the water dividing plate. A third upper guiding surface of the movable block contacts and couples to a first inner guiding surface of the water dividing plate to enable the movable block to move to drive the water dividing plate to rotate in a first direction. The movable block cooperates with a fixing guiding surface of an upper matching portion of the mounting portion to enable the push rod to move to drive the movable block and the water dividing plate to rotate in the first direction.

Abstract: A high-pressure cleaning apparatus including a high-pressure pump that includes a suction chamber, at least one pump chamber in which liquid is pressurized, and a pressure chamber arranged downstream of the pump chamber is disclosed. The high-pressure pump includes a return line via which the pressure chamber is in flow communication with the suction chamber, and a valve unit by which a free cross-sectional area of the return line is changeable. The high-pressure cleaning apparatus also includes a drive unit associated with the valve unit, a control unit coupled to the drive unit and a pressure sensor coupled to the control unit for detecting liquid pressure on the pressure side of the pump chamber. Depending on the signal of the pressure sensor, the liquid pressure can be controllable to a predetermined or predeterminable liquid pressure by changing of the free cross-sectional area of the return line.

Abstract: A well test burner system includes a plurality of burner nozzles, each including an air valve and a well product valve movable between an open position, where air and a well product are allowed to circulate through the burner nozzle to discharge an air/well product mixture, and a closed position, where the air and the well product are prevented from circulating through the burner nozzle. One or more actuation devices are operatively coupled to the air valve and the well product valve to move the air valve and the well product valve between the open and closed positions.

Abstract: [Object] To apply or deposit powder or granular material onto a required portion of an object by a required quantity precisely at low cost, to make the weight per unit area smaller than one square centimeter or square millimeter uniform, and to make the use efficiency of powder or granular material as close to 100% as possible. [Solution] Firstly layers of powder or granular material is formed on a substrate with a uniform weight per unit area, and then the powder or granular material on the substrate is sucked and ejected toward the object to form layers or films.

Abstract: A coolant distributor comprising a head having a plurality of ports, each of the ports being fluidly coupled to a flow control valve. A cap is demountably coupled to the head. The cap comprises at least one fixed nozzle fluidly coupled to at least one port. A controller is coupled to the flow control valve, wherein the controller is configured to actuate the flow control valve to pass a cooling fluid through the at least one fixed nozzle to direct the cooling fluid to at least one predetermined cutting region of a machine tool and work piece proximate the coolant distributor.

Abstract: Processes of and apparatus for supplying to an operation a liquid that is applied at the operation comprise delivering to the operation from a holding vessel a liquid of a prescribed composition comprising more than one constituent, whereby a spent liquid having a composition different from the prescribed composition can be formed at the operation. The spent liquid is returned to the holding vessel for redelivery to the operation. The composition of the liquid at the holding vessel can be continuously analyzed and the amount of each constituent of the liquid required to be added to the liquid at the holding vessel to provide a liquid of the prescribed composition determined and that amount of each constituent delivered to the holding vessel. A plurality of operations and respective holding vessels can be involved. The operations can comprise metalworking operations and the liquid of a prescribed composition can comprise a coolant.

Abstract: A surface wiper device which includes a carrier which supports a blade. The carrier attaches to a wiper arm which urges the blade against and moves the blade across the surface of a windshield. The carrier further provides a plurality of outlets each of which communicate between a hollow passage inside the carrier and a location on the external surface of the carrier. A fluid can be delivered from a fluid source fluidicly coupled to the hollow passage of the carrier under sufficient pressure to be dispersed from the plurality of outlets onto the windshield during movement of the blade. A fluid heater can be thermally coupled with the fluid delivered from the fluid source to the plurality of outlets to increase the temperature of the fluid dispersed onto the windshield. The fluid can be sufficiently heated to generate a heated gas.

Abstract: The disclosure provides a fuel injection nozzle. The fuel injection nozzle includes a nozzle body, with the nozzle body defining a central bore. A fuel atomizer is disposed in the central bore. The fuel atomizer defines a spill-return bore and a swirl chamber. The swirl chamber is in fluid communication with the central bore. The spill-return bore includes a return swirler approximate the swirl chamber. An air supply pump is coupled to the fuel atomizer and is in fluid communication with the spill-return bore. The air supply pump is configured to selectively inject air into the swirl chamber through the spill-return bore.

Abstract: In certain embodiments, a fuel injector includes a wall separating a fuel passage from an air passage. The fuel injector also includes a fuel injection port extending from a first side of the wall to a second side of the wall for injecting a flow of fuel from the fuel passage into a flow of air in the air passage. In addition, the fuel injector includes first and second feedback lines extending from a downstream end of the fuel injection port to an upstream end of the fuel injection port. The first and second feedback lines are disposed on opposite sides of the fuel injection port. In addition, the first and second feedback lines are disposed entirely within the wall.

Abstract: A pressure washer device is provided that employs an unloader bypass valve that directs a selective amount of fluid via a small diameter bypass line back to a water storage tank. The small amount of fluid allows for the pump to remain working and introduces cooler water into a bypass circuit, thereby allowing the thermal relief valve to be omitted. The diameter of the bypass line is of such a diameter to prevent siphonage of the detergent associated with the pressure washer system into the water storage tank as well.

Abstract: A firefighting apparatus on a small all-terrain utility vehicle has a U-shaped water tank closely spaced from the driver's cab. A reel for a high-pressure hose is mounted in the U of the water tank. A high-pressure engine driven pump is connected to the reel and a high-pressure hose through a water management system, which directs water from the water tank to the pump, and from the pump to the hose. The pump has a pressure valve which sets the engine idle when the high-pressure water nozzle is closed. A pressure unloader valve recirculates water from the pump outlet to the pump inlet when the nozzle is closed. A check valve is used between the water tank and a point where water recirculates to the pump. A prefilter is connected between the check valve and the water tank.

Abstract: A dispensing assembly for dispensing a mixture of fluids is provided. In some embodiments, the dispensing assembly includes a first valve for selectively permitting fluid flow to a mixing chamber in which a second fluid is introduced, wherein the valve is actuated between open and closed positions responsive to fluid pressure downstream of the mixing chamber. In such embodiments, the fluid pressure downstream of the mixing chamber can change based upon whether fluid is dispensed from a spray gun, wand, nozzle, or other dispensing head of the dispensing assembly.

Abstract: A direct injection injector for an engine includes a body forming the outer structure and having a space therein, a needle inserted to slide linearly in the body and having a hole therein forming a fuel channel, and a cylinder nozzle fitted on needle to communicate with hole and having a nozzle hole for injecting fuel, such that it is possible to prevent caulking in which the nozzle of the injector is clogged with soot while injecting fuel at relatively low pressure, change the spray type of the injected engine in various shapes, and sufficiently decrease the size of droplet of the fuel.

Abstract: A rock dusting apparatus comprising: a housing; a tank mounted within the housing which comprises a removable top wall member, a sidewall member and a bottom wall member configured to form an internal tank compartment for holding and mixing a rock dust composition; a mixer positioned on the bottom wall member for mixing the rock dust composition; a tank discharge port positioned on the bottom wall member or a lower portion of the sidewall member through which the rock dust composition can be discharged from the tank; a conduit extending from the tank discharge port to a housing discharge port; the conduit comprising a pump for transporting the rock dust composition through the conduit and through a discharge line operatively connected to the housing discharge port; and one or more motors mounted within the housing for powering the mixer and the pump.

Abstract: Multiple intensifier injectors with positive needle control and methods of injection that reduce injector energy consumption. The intensifiers are disposed about the axis of the injectors, leaving the center free for direct needle control down the center of the injector. Also disclosed is a boost system, increasing the needle closing velocity but without adding mass to the needle when finally closing. Direct needle control allows maintaining injection pressure on the fuel between injection events if the control system determines that enough fuel has been pressurized for the next injection, thus saving substantial energy when operating an engine at less than maximum power, by not venting and re-pressurizing on every injection event.

Abstract: A pump for a high-pressure cleaning device for delivering cleaning fluid is provided. The pump has at least one pump chamber, into which at least one piston plunges, and which is connected to a suction line via at least one inlet valve and to a pressure line via at least one outlet valve. A bypass line leads from the pressure line to the suction line. An overflow valve is arranged in the bypass line. The valve body of the overflow valve is connected to a control piston which is displaceably held in a control chamber with the interposition of a sealing element and moves the valve body into a closed or an open position as a function of the flow rate of the cleaning fluid in the pressure line. A sliding element is arranged in the control chamber and abuts sealingly on the wall of the control chamber.

Abstract: A pressure washer device is provided that employs an unloader bypass valve that directs a selective amount of fluid via a small diameter bypass line back to a water storage tank. The small amount of fluid allows for the pump to remain working and introduces cooler water into a bypass circuit, thereby allowing the thermal relief valve to be omitted. The diameter of the bypass line is of such a diameter to prevent siphonage of the detergent associated with the pressure washer system into the water storage tank as well.

Abstract: A dispensing assembly for dispensing a mixture of fluids is provided. In some embodiments, the dispensing assembly includes a first valve for selectively permitting fluid flow to a mixing chamber in which a second fluid is introduced, wherein the valve is actuated between open and closed positions responsive to fluid pressure downstream of the mixing chamber. In such embodiments, the fluid pressure downstream of the mixing chamber can change based upon whether fluid is dispensed from a spray gun, wand, nozzle, or other dispensing head of the dispensing assembly.

Abstract: A fuel injection apparatus for an internal combustion engine includes a fuel supply passage and a valve arrangement for controlling fuel pressure within the fuel supply passage. The valve arrangement includes a valve member movable between an open position in which the fuel supply passage communicates with a low pressure fuel drain and a closed position in which communication between the fuel supply passage and the low pressure fuel drain is prevented. The valve arrangement comprises damping means for controlling and/or damping movement of the valve member between the closed and open positions.

Abstract: Three-way valves having reduced leakage and fuel injectors using the same. Three-way spool poppet valves are disclosed having a spool with a poppet valve thereon cooperating with a seat on the valve housing to provide a substantially leak free valve closing in one direction characteristic of a poppet valve while preserving the advantages of a spool valve. Three-way ball valves are also disclosed having substantially leak free valves closing in both directions, but further including reduced short circuit losses due to direct flow from a high pressure supply to a low pressure vent during transition of the ball from one position to the opposite position. Fuel injectors with direct needle control using the three-way valves of the present invention are also disclosed.

Abstract: A dispensing system for an appliance has a main tank for holding a fluid. The main tank controls the temperature of the fluid. A dispenser outlet fluidly is connected to the tank by a dispenser fluid line. An auxiliary tank holds a volume of the fluid. A flow control device selectively moves the fluid held in the auxiliary tank to the main tank then through the dispenser fluid line to the dispenser outlet and selectively removes the fluid remaining in the dispenser fluid line after dispensing.

Abstract: The invention concerns a coating plant for the coating of construction units with a coating medium, in particular a paint system for the lacquer finish of motor vehicle body parts, with a dosing pump, the coating medium supplied with a certain delivery (Fm) proportioned, and a pressure control valve arranged upstream before the dosing pump to adjust a coating medium pressure (p v) at the entrance of the dosing pump, as well as a control unit to adjust the pressure control valve a controlled variable of the pressure difference (?p) through the dosing pump independently of the delivery of the dosing pump and the changing viscosity of the lacquers to an essentially constant desired value (?pTARGET).

Abstract: A fuel system for supplying CNG to an internal combustion engine. The system includes a fuel rail, a CNG fuel injector, and an engine manifold. The CNG fuel injector includes a fuel inlet in fluid communication with the fuel rail, and a fuel outlet disposed along a longitudinal axis and in fluid communication with the engine manifold. A member is disposed at the fuel outlet that dispersing the CNG in a direction skewed from the longitudinal axis as the CNG flows from the fuel outlet into the engine manifold.

Abstract: A system for providing fluid at a uniform pressure throughout varying elevations includes multiple channels or a chambered supply line. The feed into the supply line is maintained at a higher pressure to overcome increasing elevations. The return or open line is run with or next to the feed line. A connection chamber connects the two lines, and the connection to the return line is made by a set minimum-pressure valve, which maintains a desired pressure in the connection chamber by closing upon minimum pressure and opening to relieve higher-than-desired pressure. This system can be used for irrigation, fertilization, pesticide delivery, or any situation in which a consistent pressure is desired at an exit point, such as with membrane or drip tubing-type systems. Membranes can be used as the connection chamber itself.

Abstract: Multiple intensifier injectors with positive needle control and methods of injection that reduce injector energy consumption. The intensifiers are disposed about the axis of the injectors, leaving the center free for direct needle control down the center of the injector. Also disclosed is a boost system, increasing the needle closing velocity but without adding mass to the needle when finally closing. Direct needle control allows maintaining injection pressure on the fuel between injection events if the control system determines that enough fuel has been pressurized for the next injection, thus saving substantial energy when operating an engine at less than maximum power, by not venting and re-pressurizing on every injection event.

Abstract: A fuel injection system having one high-pressure fuel pump and one fuel injection valve, communicating with the high-pressure fuel pump, for each cylinder of an internal combustion engine. A pump work chamber is defined by a pump piston, and the fuel injection valve has an injection valve member by which at least one injection opening is controlled. An electrically actuated control valve controls a communication of the pump work chamber with a relief region and a movable control piston acts at least indirectly in the closing direction on the injection valve member, and the control piston, on its side remote from the at least one injection valve member, is acted upon at least indirectly by the pressure prevailing in the pump work chamber. The control piston, with its side toward the injection valve member, defines a control chamber.

Abstract: Apparatus and methods for establishing a controllable reactive thrust in a pressure washing lance (40) linked to an extension member (20) through use of a variable bypass valve (52) and dump tube (66) combination. The bypass valve (52) is coupled to a source of high pressure fluid by a system high pressure or primary circuit (26,38). The bypass valve (52) preferably has at least one bypass input (56), which is intended to be fluidly coupled with the high pressure or primary circuit (38), and at least one each of a bypass primary output (58) and a bypass secondary output (60). Operation of the bypass valve (52) selectively couples the bypass input (56) with the bypass primary output (58) and/or the bypass secondary output (60). Fluid from the bypass primary output (58) is directed to the lance ejection nozzle (44) while fluid from the bypass secondary output (60) (secondary fluid) is directed to the dump tube (66).

Abstract: There are provided a nozzle capable of enhancing the straight-advancing capability of jetted fluid to increase the back wash effect of a filter member, and a filter-type dust collector capable of effectively carrying out dust removal from a filter member with such a nozzle. To this end, the nozzle has a Laval nozzle section secured to the inside of an outer tube at its proximal end and a fluid guide section disposed at the leading end of the outer tube. The fluid guide section has a plurality of suction holes elongated in the flowing direction of the pressurized fluid. This nozzle is mounted on a pulse header tube of a dust removal device.

Abstract: A spray fill device for delivering water to a washing machine is provided. The spray fill device includes a body defining an inlet, an outlet port, a mounting port, and a plurality of outlet apertures in flow communication with the inlet. The spray fill device also includes a first valve coupled to the inlet, the valve configured to control a flow rate of water into the inlet. The spray fill device also includes a pressure relief mechanism coupled to the mounting port, the pressure relief mechanism inhibiting flow through the outlet port when a pressure within the body is less than a predetermined pressure.

Abstract: The invention relates to a method for draining a fuel storage of an injection system of an internal combustion engine for an automobile, particularly a motor vehicle, having at least one injection valve. It is provided that the draining is carried out by means of suctioning off the fuel, wherein the injection valve is placed into the open position, or is placed into the open position at least once for venting the injection system during the suctioning off process. The invention further relates to a corresponding device.

Abstract: An apparatus for injecting fuel into an internal combustion engine having a fuel injector acted on with highly pressurized fuel actuated by means of a metering valve device that is able to control the pressure in a pressure booster control chamber so that in a pressure booster pressure chamber delimited by a pressure booster piston which can be filled via a check valve with high-pressure fuel and communicates with an injection valve member pressure chamber, the pressure booster piston increases the pressure, causing an injection valve member for injecting fuel to open.

Abstract: A printer including a recording head, a flushing box and a movement mechanism is disclosed. The recording head has a nozzle-forming surface in which nozzle openings are defined and ejects a liquid through the nozzle openings. The flushing box has an opening corresponding to the nozzle openings and is capable of receiving the liquid ejected from the nozzle opening as a waste liquid. The movement mechanism moves the flushing box between a receiving position at which the flushing box is capable of receiving the waste liquid and a non-receiving position at which the flushing box is incapable of receiving the waste liquid. The receiving position is a position at which the opening is closely opposed to the nozzle-forming surface, and the non-receiving position is spaced from the receiving position.

Abstract: A retort is described for use with paperboard containers (48) to reduce moisture absorption during processing of foodstuffs therein. The improvement includes using solid cone spray nozzles (50) with spray angles in the range of about 100 degrees to about 115 degrees. In one embodiment, the distance (D?) between the nozzles and the container is in the range of about 70 mm to about 200 mm. In another embodiment, the flow rate if each nozzle (50) is reduced relative to known systems, while the total vessel flow rate is kept the same as per cubic meter load. Further, an overpressure may be added to the vessel via compressed air. In accordance with other aspects, an Impact reduction is used which relates nozzle flow rate, pressure, distance, etc. with moisture absorption in paperboard containers.

Abstract: In the fire location, an ambient or atmospheric air mass flow (been a gas mixture of dry air and superheated water vapor) is compressed by a compression package. A hose transports this compressed air mass flow a given distance away up to a flames site, where an arrangement of pipes, elbow accessories, throttle valves, nozzles, and a distribution manifold, conforming together a fire fight boom with a “blast-gun”, allow the operator to direct upon the flames, a high speed ambient air jet containing water droplets with a high flame front aerodynamic penetration capability, which brings about the flames blown off and remaining not burned materials combustion inhibition. Such a high speed air jet containing water droplets is generated by the compressed air mass flow expansion in a jacketed convergent-divergent nozzle, whereinto a condensation sock wave is established producing such water droplets from the local ambient air water vapor contents.

Abstract: Disclosed is a dispersing apparatus comprising a container body; a sealable lid detachable from the container body; a mixing shaft supported by and extending from the lid and having a mixing member; an enclosing member supported by the lid or the mixing shaft and surrounding the mixing member; the enclosing member containing pulverizing media and permitting a pigment-vehicle fluid to pass therethrough; a vacuum pump connected to the lid through a condenser and pipes to reduce the pressure in the container body; and a recovery tank connected to the condenser to collect a liquid fraction separated from a gas fraction by the condenser; wherein the recovery tank and the condenser are connected to the lid through pipes so that the liquid fraction separated by the condenser can be returned from the recovery tank or the condenser to the container body when required, in order to control the viscosity of the pigment-vehicle fluid.

Abstract: A method and an apparatus for metering a reducing agent in which the reducing agent is delivered, via a line and a final control element that regulates the metering, in particular a metering valve, to a catalytic converter assembly for removing nitrogen oxides from the exhaust gases, in particular of a Diesel engine; a pressure drop in the line dictated especially by gas inclusions is detected, and the line is ventilated via the final control element.

Abstract: A manifold block for controlling the flow of liquids and useful in the application of paint to automotive vehicles and in other, similar, applications is provided. The manifold block houses at least one liquid inlet supply channel, at least one liquid outlet return channel, and an applicator channel in microvalved connection with the inlet channel and the outlet channel, which channels meet at a common intersection in adjacent proximity to the microvalve. Stagnation in any of the channels in either the “open” or “closed” mode of operation of the microvalve is substantially eliminated. A stacked array of a plurality of these manifold blocks may be interconnected through a common applicator channel.

Abstract: The invention relates to an injector for reservoir (common rail) injection systems for direct-injection internal combustion engines in which a nozzle needle which is surrounded by a nozzle chamber is guided in an injector housing. The inlet of the nozzle chamber is closable and openable via an externally actuatable closing element. From the nozzle inlet, inlets branch off to control parts. The inlets are embodied as throttle elements, one of which is closable on the outlet side via a closing element.

Abstract: Apparatus for maintaining a vehicle screen (12) supported with respect to a vehicle by a gasket (16, 24), said screen (12) comprising first (22) and second (27) edge regions wherein said gasket (16, 24) has a first conduit (20) means having an opening (21) proximate to said first edge region (22) and second conduit (25) means having an opening (26) proximate to said second edge region (27) and wherein the apparatus further comprises supply apparatus coupled to said first conduit means (20) for supplying a liquid thereto and collection apparatus coupled to said second conduit (25) means for collecting said liquid.

Abstract: The invention relates to a fuel injection valve that has a valve member which can control a fuel outlet opening. The valve member has a first opening surface, which defines a first opening pressure chamber in the opening direction of the valve member, wherein the first opening pressure chamber is connected to a high-pressure fuel source and the pressure in the first opening pressure chamber produces a first opening force against the first opening surface. The valve member also has a first closing surface, which defines a first closing pressure chamber in the closing direction of the valve member, wherein the first closing pressure chamber is connected to the high-pressure fuel source and the pressure in the first closing pressure chamber produces a first closing force against the first closing surface.

Abstract: An apparatus for generating a mist for use in a centralized, pressurized gas-driven mist generating system is disclosed in which a frame member is formed with a mist generating passage, a pressurized gas inlet passage connecting with the mist generating passage, and a liquid inlet passage connecting with the mist generating passage. The mist generating passage is adapted to receive a gas-operated venturi nozzle having mist flow rates ranging from about 0.1 cfm to about 65 cfm. A pressure relief valve for relieving excess gas pressure is also disposed in the mist generating passage and adapted to open if the gas pressure in the mist generating system reaches a predetermined level. The mist generating apparatus further comprises an adjusting member, such as a needle valve, disposed in the liquid inlet passage and extending externally of the frame member to a position accessible for adjustive manipulation by an operator for controlling the liquid flow rate and adjusting the ratio of liquid-to-gas in the mist.

Abstract: A water flow rate control device includes a water output device connected to a water supply source for output of water through a water passage defined therein. A water flow rate control unit is mounted in the water output device and configured to close/open the water passage of the water output device and to regulate the water flow rate passing through the water passage of the water output device. A control switch is operated to drive the water flow rate control unit, causing the water flow rate control unit to close/open the water passage of the water output device. A pressure relief control unit includes a spring supported relief valve mounted in the water output device and coupled to the water flow rate control unit to automatically release a high pressure when the water flow rate control unit is driven to close the water passage of the water output device.

Abstract: A fuel delivery apparatus for an auxiliary vehicle heater includes a burner with a fuel nozzle. A fuel pump has an intake port and a discharge port. There is a first fuel conduit connected to the intake port. A second fuel conduit connects the discharge port to the nozzle. A third fuel conduit extends between the discharge port and the intake port. A pressure release relief valve is operatively disposed along the third conduit. Fuel from the discharge port is recirculated back to the intake port when pressure of fuel supplied to the nozzle through the second conduit exceeds a preset amount. Preferably the fuel nozzle is an air aspirated fuel nozzle and the fuel pump is a gear pump. The third conduit may be internal to the fuel pump.

Abstract: A system usable for dispensing fluids including hot melt adhesives, supplied from a reservoir, onto a substrate. The system includes a plurality of fluid dispensing nozzles coupled to a fluid supply conduits disposed in a main manifold wherein fluid is supplied from a fluid metering device. An air preheater module is mountable to the nozzles and provides heated air for controlling the fluid dispensed by the nozzles. The main manifold includes a plurality of recirculation conduits each disposed between a fluid supply conduit and the fluid reservoir. A one-way valve disposed along each recirculation conduit conditionally recirculates fluid toward the fluid reservoir. A variety of recirculation manifold configurations are interchangeably mounted to the main manifold for recirculating fluid toward the fluid reservoir. Fluid pressure gauges monitor pressure in individual fluid supply conduits, or alternatively an average fluid pressure.

Abstract: In a high-pressure cleaner of the type comprisinga) a high-pressure pump (3),b) a motor driving said pump (3),c) a liquid supply (1,2) connected to the suction side (8) of the pump (3),d) a cleaning gun (4) connected to the delivery side (6) of the pump (3) through a delivery duct (10) and comprising a manually operable stop valve, ande) a bypass valve (16,17) adapted to in its open condition to allow flow frem the delivery side (6) to the suction side (8) of the pump (3),the main novel feature isf) flow-sensing mechanism (15,20) associated with the delivery duct (10) and adapted to open the bypass valve (16,17) when flow in the delivery duct ceases or decreases below a predetermined magnitude and to act upon it in the closing direction when flow is equal to or above the predetermined magnitude.

Abstract: A self contained portable sprayer system including a tank for receiving a fluid mixture and has a top portion with a cap coupled by a threadable connection. The tank has a flat bottom portion. A fluid release valve with a fluid release tube threadably connected to the top portion of the tank. The release valve has a pair of flexible hoses. A pressure switch that has an air receiving tube at one end threadably connected to the top portion. The pressure switch has a pressure hose. A pressure release valve is positioned on the top portion of the tank. A towing hitch for carrying the tank has, an elongated vertical portion, a short vertical portion, and a flat lower portion. The elongated portion has a distal side with a pair of wheels, and one shelf supporting a power source. The lower portion seats the tank when positioned within the towing hitch. Lastly, a cyclic air pump is positioned on another shelf of the elongated portion and forces air into the tank.

Abstract: A washing machine including a boiler, a motor-driven pump controlled by a control device to pump warm water from the boiler to a spray gun through a water supply pipe, a check valve installed in the water supply pipe, a water return pipe for sending water from the water supply pipe back to the boiler, an unload valve for releasing pressure from the water supply pipe, a water volume detector connected to the water supply pipe between the unload valve and the spray gun to accumulate water from the water supply piping and being actuated when accumulated water volume drops below a predetermined value, a pressure detector mounted on the unload valve and actuated when the unload valve is opened, and a control device driven by the water volume detector to start the motor when the water volume detector is actuated, or driven by the pressure detector to turn off the motor when the pressure detector is actuated.