Abstract: Introduced is a flow path conversion pump comprising: an inlet pipe for guiding a flow of water, an impeller housing having an impeller built therein, and including a first housing outlet and a second housing outlet formed parallel to a tangential direction of rotation of the, a flow path switch forming an internal space, including a first switch inlet and a second switch inlet, which communicate with the first housing outlet and the second housing outlet, respectively, and including a first outlet and a second outlet, which communicate with the first switch inlet and the second switch inlet, respectively, a diaphragm disposed in the internal space of the flow path switch, separating the first switch inlet and the second switch inlet, and separating the first outlet and the second outlet and a motor connected to the impeller to transmit power.

Abstract: A cleaning device for a vehicle, with which at least one cleaning location is cleaned with pressurized cleaning liquid and/or pressurized ambient air, is proposed, including: a pump-compressor stage for sucking up and conveying the cleaning liquid and/or the ambient air, a fluid path which fluidically connects the pump-compressor stage upstream to a cleaning liquid tank and to an environment of the cleaning device, and a fluid distribution apparatus downstream of the pump-compressor stage, which is fed with the cleaning liquid and/or the ambient air by the pump-compressor stage, the fluid distribution apparatus being fluidically connected to the cleaning location. A vehicle with such a cleaning device, the first and the second use, and a cleaning method for a vehicle are also proposed.

Abstract: An apparatus comprising a housing having a housing throughbore extending therethrough along a central axis; a motor drive shaft disposed in the housing throughbore; a component drive shaft disposed in the housing throughbore; and an alignment coupler mechanically coupling the motor drive shaft with the component drive shaft. The alignment coupler comprises: an alignment coupler body having an alignment coupler body throughbore extending therethrough; a spherical bolt comprising a spherical first end and an elongated section extending from the spherical first end to a second end; a thermally expandable material (TEM) section; a spring section comprising one or more springs; and one or more spherical spacers. The alignment coupler enables alignment of the motor drive shaft and the component drive shaft within the apparatus during assembly of the apparatus, and heating of the TEM provides rigidity to the assembled apparatus prior to use.

Abstract: There is provided an air pressure system for controlling an air compressor in real time in accordance with the actual usage of compressed air by a plurality of terminals. Furthermore, in case pressure losses change abruptly, unwanted electric power is prevented from being consumed by a stable operation free of response delays on the basis of a predicted model that assesses time lags of volume responses.

Abstract: A device for detecting and/or monitoring a protective earth connection in a mains electricity outlet includes an electrical current conducting unit between the line wire and/or neutral wire of the mains electricity and the protective earth wire allowing the flow of a detection current between the line wire and/or neutral wire and the protective earth wire. The device is furthermore configured for measuring the detection current and comparing the detection current with a preselected reference current. A method for detecting and/or monitoring a protective earth connection in a mains electricity outlet includes the steps of measuring a detection current from the line wire and/or neutral wire of the mains electricity through an electrical current conducting unit to the protective earth wire, and comparing the measured detection current to a preselected reference current.

Abstract: Provided is an ICP mass spectrometer which is able to effectively discharge residual water by limiting the consumption of Ar gas and a fluctuation in supply pressure of an Ar gas source at the time of an Ar gas purge for a coolant system. The ICP mass spectrometer is provided with: a device body part 1; a coolant system 2 that supplies a coolant from a water source 20 to to-be-cooled structure parts including a high-frequency power supply 12, a high-frequency coil 18, and a sample introduction part 13, which need to be cooled; and an Ar gas supply system 3. Intermediate valves V2, V3 are disposed on the downstream side of a main valve V0, a purge gas channel 32 having a purge valve V1, and a meeting point G of the purge gas channel 32. The to-be-cooled structure parts are connected to a cooling-use pipe on the downstream side of the intermediate valves V2, V3.

Abstract: A fluid delivery system includes a fluid container, two or more pressurizing chambers in fluid connection with the fluid container, a drive mechanism in operative connection with the two or more pressurizing chambers to pump fluid from the fluid container and an outlet in fluid connection with the two or more pressurizing chambers. Each of the two or more pressurizing chambers is formed from a flexible, resilient material that is adapted to be compressed to pressurize fluid therewithin.

Abstract: A control switch incorporates a solid state transducer, a strain gauge. The transducer responds to a local environmental condition, such as fluid level, or pressure and exhibits a parameter change which can be detected as an electrical output. Control circuits coupled to the transducer can sense the parameter change and switch a source of electrical energy to a load in response thereto.

Abstract: In a fluid transport apparatus, there are cases where a set fluid discharge amount cannot be accurately discharged, due to wear and tear on an elastic tube. Therefore, in a fluid transport apparatus including a fluid transport cartridge and a fluid transport driving unit that are separable from each other, the fluid transport cartridge comprises an elastic tube that transports fluid, a pressing portion that moves between a first position in which a transport path of the fluid is constricted by pressing on the elastic tube from outside and a second position in which the transport path of the fluid is not constricted, and a housing portion that houses a drive mechanism for moving the pressing portion.

Abstract: A fuel supply pump in which even when a tappet slides at high speed, a sliding balance of the tappet is maintained and improved durability is achieved by preventing one-sided contact between the tappet and a cylinder hole. The tappet is configured to have a cylindrical tappet body and a roller, and a cylindrical guide ring is fixed into the cylinder hole. In the tappet body and a cylindrical portion of the guide ring, a tappet side guide portion and a guide ring side guide portion which can be fitted thereto in an axial direction are provided in at least two locations at equal intervals.

Abstract: The invention relates to a rotary lobe pump for conveying solids-laden fluids engendered in agriculture, in which the conveyed fluid volume flow adapts itself to different operating modes. For improved self-priming, the rotary lobe pump is designed for vertical mounting of the rotary lobes, wherein an angular gear is provided. The rotary lobes are mounted in a topside or underside cover, wherein the axes of the rotary lobes are vertically oriented. Using one of the covers, the rotary lobes can be vertically removed and maintained without having to dismantle other pump components from the pump housing. The rotary lobes can also be removed together with the angular gear as an integral pump component using one of the covers.

Abstract: A fluid working machine comprising a controller and a working chamber, an electronically controllable low pressure valve associated therewith and a fast high pressure valve associated therewith, characterized in that the working chamber has associated therewith a slow high pressure valve for controlling the connection of the working chamber to a secondary high pressure manifold. A fluid working machine according to the invention may be operated to rotate its shaft to a certain position, for example to allow easy maintenance of a wind turbine generator.

Abstract: A pneumatic inflation device disposed within the sole of a shoe and comprising a pump with integral air release valve and which is entirely within the sole, a pump actuator which is entirely within the sole when not in use, and an inflatable bladder which is entirely within the sole and is operatively connected to the pump. Such a device can include a mechanism to lock the pump actuator within the sole such that the mechanism's cap is flush with the outer wall of the sole and finger-operable to allow the shoe-wearer to easily operate the inflation device and release air therefrom.

Abstract: A high-pressure fuel supply pump includes a compression chamber, a plunger reciprocating in the compression chamber for pressurizing fuel in the compression chamber, a discharge valve for discharging pressurized fuel from the compression chamber to a high-pressure fuel passage of a high-pressure fuel supply system for supplying high-pressure fuel to an internal combustion engine, and a first solenoid actuated valve for connecting and disconnecting a first low-pressure fuel passage and the compression chamber. The first solenoid actuated valve is biased by a first biasing member in a closing direction of the first solenoid actuated valve, and is opened or kept open against the biasing force of the first biasing member, when the first solenoid actuated valve is energized. The high pressure fuel supply pump further includes a second solenoid actuated valve for connecting and disconnecting a second low-pressure fuel passage and the compression chamber.

Abstract: A device for transfer of granular solid material between two chambers at different pressures. A piston type transfer pump device used in a horizontal position transfers granular material into the compression chamber by gravity and evacuates the material into the exhaust chamber at a higher pressure. Such a device may for example find an application for feeding a gasification reactor with biomass.

Abstract: An airflow passage structure of manual pump of fluid-pumping apparatus includes a first control valve and a second control valve. The first and second control valves are movable between different positions to change flowing path of air so as to increase or decrease the air pressure in the chamber of a container of the fluid-pumping apparatus. In a relief operation mode, the air in the chamber is guided to go into a first compartment of the interior space of the manual pump and then go into a second compartment thereof to be exhausted into the atmosphere. On the other hand, in a pressurization operation mode, the communication between the chamber and the first compartment is interrupted and the air goes into the second compartment and then is pressurized and filled into the chamber to increase the pressure in the chamber.

Abstract: An air pump set includes an air pump, at least two air distributors and a pressure reducer. At least two air distributors are serially connected with the air pump for further distributing the pressurized air to respective air-requiring targets. The pressure reducer is serially connected between any adjacent two of the at least two distributors for reducing the pressure of the pressurized air to a downstream one of any adjacent two of the at least two distributors. The pressure reducer includes a hollow cylinder and a cylinder core. The hollow cylinder includes a first pair of inlet and outlet and a second pair of inlet and outlet. The cylinder core is loosely fitted within the hollow cylinder, and comprises a first air channel and a second air channel. The cylinder core is rotatable between a first position and a second position relative to the hollow cylinder.

Abstract: A pump assembly (200) for therapeutic inflatable cell apparatus, the assembly comprising a common pump unit (210), control means (160), and, first and second valve means (201;202), each valve means comprising a cycle control valve means, said cycle control valve means being provided with at least one fluid passageway and each valve means being adapted to be positioned to predetermined conditions so as to regulate fluid quantity in respective therapeutic inflatable cell apparatus, each valve means is adapted to perform at least one respective inflation/deflation sequence, and the assembly being such that, in use, on air being required by a valve means at a particular instance during the respective inflation/deflation sequence, the control means activates the common pump unit and air is pumped to an air outlet to feed air to the at least two valve means, and the pump assembly being such that the first and second valve means are operable both singularly and simultaneously.

Abstract: A medical fluid delivery system for the use in the delivery of medical fluids. The medical fluid delivery system may include a pumping system, a disposable medical fluid line set and a valve operating system. The disposable tubing line set may include valves adapted to interface with the valve operating system. The valve operating system may be adapted to operate only selected valves using a single drive means. The pumping system may be operated over a wide range of medical fluid delivery rates by employing a bi-directional drive member and a transmission interfaced with the drive member and a pump.

Abstract: A high pressure slurry plunger pump is described which provides a clean fluid buffer around the suction and discharge valves of the pump and in some cases in the vicinity of the plunger seal mechanism in order to displace erosive slurry material and thus extend the life of the pump and improve pump efficiency.

Abstract: A machine air supply system includes a primary air circuit and a secondary air circuit and a single compressor for supplying compressed air to both circuits. In an embodiment, the compressor is a reciprocating piston compressor having a primary air circuit including a compression chamber of the compressor and a secondary air circuit including a crankcase chamber of the compressor. In an aspect, the compressor may be a multi-cylinder compressor.

Abstract: A high pressure slurry plunger pump is described which provides a clean fluid buffer around the suction and discharge valves of the pump and in some cases in the vicinity of the plunger seal mechanism in order to displace erosive slurry material and thus extend the life of the pump and improve pump efficiency.

Abstract: A vacuum control valve includes a valve body defining a cavity, an inlet opening and a vent opening. A vacuum supply control member is movably mounted at the inlet opening, and is movable between an open position to open the inlet opening, and a closed position to close the inlet opening. A vent control member is movably mounted at the vent opening, and is movable between an open position to open the vent opening, and a closed position to close the vent opening. The vacuum supply control member and the vent control member are movable independently of each other, for selectively controlling the supply of vacuum when the vacuum supply control member is in the open position and the vent control member is in the closed position, and for selectively venting vacuum when the vacuum supply control member is in the closed position and the vent control member is in the open position.

Abstract: A medical fluid delivery system for the use in the delivery of medical fluids. The medical fluid delivery system may include a pumping system, a disposable medical fluid line set and a valve operating system. The disposable tubing line set may include valves adapted to interface with the valve operating system. The valve operating system may be adapted to operate only selected valves using a single drive means. The pumping system may be operated over a wide range of medical fluid delivery rates by employing a bi-directional drive member and a transmission interfaced with the drive member and a pump.

Abstract: A compact air pump and valve package includes pump and valve assemblies integral with a pressure housing defining inlet ports and a plurality of fittings for connecting air lines to an interior of the pressure housing. The linear diaphragm pump assembly has a permanent magnetic shuttle mounting two diaphragms reciprocated by an electromagnet. The valve assembly has a plurality of solenoid valves disposed within the pressure housing, each solenoid valve being operable to control flow into or out of the pressure housing through an associated one of the plurality of fittings. Thus, no tubes or hoses are required to transfer air from the pump assembly to the valves. The housing has special mounts to isolate vibration arising from movement of the shuttle.

Abstract: A charge pump is provided with two independent outlets that can satisfy the pressure requirements of both a charge circuit and an auxiliary circuit. Preferably, the charge pump is a multiple roller vane pump that has at least one inlet and two outlets independent of each other. The first outlet is in fluid communication with a charge circuit, and the second outlet is in fluid communication with an auxiliary circuit. Because the two outlets are independent of each other, the roller vane pump is able to satisfy the pressure requirements of both the charge and auxiliary circuits. Preferably, the two outlets are diametrically opposed to each other, thereby reducing the load on the driveshaft. Additionally, the roller vane pump may include a second inlet independent of the first.

Abstract: A multiple port, dual diameter piston fluid dispensing pump which includes multiple input and output ports accessed by rotating at least one of the pistons and a dual or multiple diameter piston or set of pistons that cooperate so that they follow each other. The dispensing piston is of smaller diameter than the pushing piston. This diameter difference permits a longer, controllable stroke to dispense micro-liters of fluid accurately.

Abstract: To economically perform preparatory chromatography, a plurality of pumps each having a corresponding one of a plurality of pistons and a corresponding one of a plurality of cylinders are driven by one motor to draw and pump solvent simultaneously into corresponding columns. To form a gradient, the pumps are connected to two-way valves that are connected alternately to a first solvent and a second solvent, whereby the time said valve is in a first position controls the amount of solvent drawn from the first reservoir into said pumps and the amount of time in said second position controls the amount of said second solvent drawn from the second reservoir into said pumps and the solvent is mixed in the pumping systems. The detectors are photodiodes mounted to light guides in the flow cells that generate signals related to light absorbance and communicate with a controller, whereby the controller receives signals indicating solute between the light guides and causes collection of solute.

Abstract: A high pressure slurry pump is described which automatically provides a clean fluid buffer around the intake and exhaust valves of the pump and in front of the pump piston in order to displace erosive slurry material and thus extend the life of the pump and improve pump efficiency.

Abstract: Described are dispensing apparatuses and methods of their use, the dispensing apparatuses having one or more process chamber inside of a control chamber, and the volume of the process chamber increases or decreases by adding or removing control fluid from the control chamber, with proper valving, to cause fluid to flow into and out of the process chamber, for use in dispensing fluid, especially in precise amounts.

Abstract: A pump includes a cylinder, a piston assembly, a first nozzle, a valve, a controller, a ring and a second nozzle. The cylinder defines first and second chambers and first and second channels for communication between the chambers. The piston assembly is received in the first chamber. The first nozzle defines a channel. The valve is received in the first chamber. The controller defines an axial channel and a radial channel communicated with the axial channel, and is received in the second chamber and linked to the valve through the second channel. The controller is movable between a first position for allowing the valve to seal the second channel and a second position for driving the valve to open the second channel. The ring is mounted on the controller so as to divide the second chamber into a first portion for communication between the first channel and the channel of the first nozzle and a second portion for communication between the second channel and the radial channel of the controller.

Abstract: A hydraulic pump has a pair of inlets each with a pair of outlets. The inlets and outlets are arranged to balance the forces on the motor. The flow from the outlets of each pair may be combined to maximize flow or separated to reduce power consumption by recirculating the flow from the outlet to the inlet.

Abstract: In a lubricating device for a plurality of lubricating stations, in particular for supplying lubricant to knitting machines, a pump device is provided that serves at the same time as a distributor device. To that end, the pump device has a piston which is provided with a control groove. The corresponding pump cylinder has an inlet and a plurality of outlets distributed over the cylinder wall. Depending on which of the outlets the control groove of the piston is made to coincide with, a corresponding lubricating station is selected. The pump device is thus a distributor device as well.

Abstract: This present application discloses an improved valve configuration such that an indicator port is incorporated directly within the valve allowing a sensing device to be mounted directly to the valve or within the valve body, this application being directed to both suction and discharge valves which sense at least one condition within a compressor comprising a cylinder, a piston, at least one discharge valve, and at least one suction valve, the valve further including a valve guard, a valve seat, a hollow area adapted and configured for housing a sensing device and a sensing device disposed within the hollow area.

Abstract: Flow parameters in a fluid delivery assembly are determined by monitoring pressure responses and processing those responses along with information regarding the fluid flow. In one aspect, a processor controls the pump to pump flow quantities in accordance with a pseudorandom code. Portions of the resulting pressure signal sensed at the conduit is averaged, and the averaged values are then decoded in accordance with the pseudorandom code. An estimate of the equilibrium pressure is generated from the decoded average pressure values, while a summation of the pressure samples is generated from the undecoded pressure signals. The resistance to fluid flow of the system is determined from the estimated equilibrium pressure and pressure summation. For low flow rates, a processor controls the pump to pump fluid in a series of fluid boluses, with each fluid bolus delivered in the beginning of a separate timeslot.

Abstract: A portable water storage tank having an internal submersible pump connected to a water discharge pipe and an internal air-hydropneumatic tank also connected to the water discharge pipe; a pressure switch connected to the discharge pipe and an electrical circuit for turning the pump on and off in response to pressure variations in the water discharge pipe. A water heater in the water storage tank and a temperature sensor in the tank to activate the heater upon detection of predetermined water temperatures.

Abstract: An automatic control device for an air compressor is disclosed. The air compressor controlled by the automatic control device is provided with two operation modes, one is the idle-running/heavy-running operation mode and the other one is the auto-stop/start operation mode.

Abstract: In the inlet pipe (7) of the compressor element (1) is provided a pneumatically controlled throttle valve (9), whereas the motor (3) of the compressor element (1) has a pneumatically controlled speed regulator (6). This speed regulator (6) and the throttle valve (9) are both connected to the compressed air receiver (14) via a compressed air pipe (26) and a control device (18). This control device (18) contains an electropneumatic valve (19) in the compressed air pipe (26) which is coupled to an electronic control (20), whereas a pressure sensor (21) is connected to the compressed air receiver (14) and a pressure sensor (22) is erected in the compressed air pipe (26) between the valve (19) and the speed regulator (6) and the throttle valve (9).

Abstract: A centrifugal fluid pump assembly has a pump body and a controller. The pump body has a housing, a pump section having an impeller rotating inside the housing, an impeller rotational torque generating section having a motor for rotating the impeller and an impeller position control section. The impeller rotates without contacting the housing. The controller has an impeller-floating position control function for changing the floating position of the impeller inside the housing by using the impeller position control section, a function of measuring electric current for driving the motor and a fluid viscosity calculation function for calculating a viscosity of fluid by utilizing a variation amount of the motor-driving electric current obtained by changing the floating position of the impeller.

Abstract: An air compressor includes a stator, which includes an inlet and an outlet and defines a substantially cylindrical bore, and a rotor eccentrically rotatably mounted in the bore. The rotor is connected to be rotated by a three-phase asynchronous electric motor of pole amplitude modulated type which is switchable between low speed six pole operation and high speed four pole operation under the control of a controller. A pressure sensor communicates with the compressor outlet and is connected to the controller which is arranged to produce a first signal when the compressor discharge pressure falls below a first threshold value and a second signal when this pressure rises above a second threshold value.

Abstract: A pump assembly for ambulatory peritoneal dialysis transfer procedures includes a portable power supply geared to drive a high-volume peristaltic pump. A cassette of the pump comprises an encasement; tubing including an inner portion positioned within the encasement, a patient-side portion for connection to an indwelling peritoneal dialysis catheter and an opposing portion connectable to a system for containment and communication of a peritoneal dialysis solution which may be one single-compartment bag assembly; a safety valve for selectively occluding and permitting the communication of the solution through the inner portion; and a filter preferably interposed along the patient-side portion which filters air and particles from peritoneal dialysate that is flowing toward a patient and which allows peritoneal dialysate to flow substantially freely and unfiltered away from the patient.

Abstract: A pressure valve used in a cleaning apparatus. The pressure valve is provided between a pump motor and a cleaning injector. The pressure valve includes a valve body, a floating valve rod, a ball valve, a compression spring, and an adjusting screw. The valve body is connected to the water supply system via pipings (A, B, C) so that starting and shutting off of the cleaning injector can alter the water pressures in the individual chambers of the valve body, which then causes the opening and closing of the ball valve. Due to the changes in the water pressure within the chambers of the pressure valve, a floating valve rod within the pressure valve will press against a micro switch to control the starting or shutting off of the pumping motor.

Abstract: The present invention is a pumping system which mixes liquids with a well-controlled proportioning and flow rate. The pumping system according to the invention comprises a liquid mixing device (MX) placed upstream from a pump (P). The liquids are taken from vessels (RA, RB), cyclically introduced, in a determined proportion, in a mixing chamber (9) through alternate opening of on-off solenoid valves (EVA, EVB). The system is controlled at the input by using a damping means such as bellows (11A, 11B) in antechambers (8A, 8B) in order to avoid the effects of velocity discontinuities at the time of the opening and of the closing of the valves. The delivery of pump (P) is controlled at the input as well as at the discharge end. The system may be used for liquid chromatography plants.

Abstract: A sensing device for a pump control module is described that is designed for use with a cassette having a pump surface with a projection. The sensing device is positioned on an interface surface of a pump control module, and includes an occlusion sensor and a cassette identification sensor. A pump control module, a cassette and a method of use are also described for administering a drug to a patient through a delivery conduit, utilizing the sensing device.

Abstract: A pressure regulated electric pump is characterized by a positive displacement double acting reciprocating pump driven by an electric motor through a planetary roller screw. A controller senses the pressure of liquid at an outlet from the pump and varies the speed of the motor in a manner to maintain the pressure substantially constant. At a constant flow demand from the pump the motor is operated at a substantially constant speed. As flow demand rises and fans the instantaneous pump outlet pressure falls and rises. The changing pressure is sensed by the controller which makes incremental changes in the speed of the motor to cause the motor to speed up during a pressure fall and to slow down during a pressure rise, in such manner as to maintain pump outlet pressure substantially constant.

Abstract: To provide performance particularly in handling supercritical extraction systems, a specially designed pump includes a cam-driven, single-plunger with a cam having a profile that enables the pumping system to avoid destructive reverse torque on the cam, gear train and drive motor after the cam passes top dead center. The fluid volume leaving the pump is determined by measuring only pressure or other parameters related to flow and movement of the plunger. Measurement of the fluid volume leaving the pump is useful for recording or indicating the flow rate while the pump is operating.

Abstract: A high pressure hydraulic pump apparatus constituting a two-stage pressurizing hydraulic booster combining a pair of plunger pumps. The first and second pumps are driven into a push-pull synchronous operation at the equal stroke with each other. The per-stroke displacement of the first pump is greater than that of the second pump. The first pump draws by self-suction the liquid from a reservoir while the second pump is on the pressurizing and delivery stroke. When the first pump is on the delivery stroke, the liquid pressurized to a certain intermediate pressure by the first pump is sucked into the second pump. During the next reverse stroke the second pump further pressurizes and discharges the liquid while the first pump effects the suction stroke.

Abstract: An emergency shutdown system for a water-circulating pump monitors the vacuum on the influent side of a pump. The system includes a vacuum switch connected to the influent side of the pump by a vacuum line. The vacuum switch is connected to a pump shut-off switch which is, in turn, connected to the motor of the pump. When one of the influent lines leading to the pump becomes clogged or blocked, the vacuum switch, through the vacuum line, senses the increased suction and delivers an electrical shut-off signal. The pump shut-off switch opens in response to the electrical signal, thereby interrupting line power to the pump. Audible and visual alarms are also electrically connected to the vacuum switch. A main switch, including on, off, start and vacuum bypass positions, is included for manually activating and deactivating the pump motor and for enabling the pump to operate under selected high vacuum situations without deactivating the alarms.

Abstract: An air compressor includes a one-piece injection molded main frame including a vertical portion formed with two horizontal holes, an upper opening between the two horizontal holes and a lower circular opening below the upper circular opening, two screws extending through the two horizontal holes to fixedly mount an electric motor on the vertical portion of said main frame, a shaft rotatably fitted in a lower circular opening and kept in place by a retainer ring, a driven gear fixedly mounted on the shaft and meshed with the driving gear, a flywheel formed with an eccentric projection fixedly mounted on the shaft and located adjacent to the driven gear, an upper part of the vertical portion being formed with a cylinder in which is fitted a piston, a first and second outlet pipes formed on the top of the cylinder, and a cover engageable with a center hole of the cap and the nozzle, whereby the piston can move smoothly within the cylinder and the two outlet pipes can be adapted for use with different nozzles.

Abstract: In a lubricating device for a plurality of lubricating stations, in particular for supplying lubricant to knitting machines, a pump device is provided that serves at the same time as a distributor device. To that end, the pump device has a piston which is provided with a control groove. The corresponding pump cylinder has an inlet and a plurality of outlets distributed over the cylinder wall. Depending on which of the outlets the control groove of the piston is made to coincide with, a corresponding lubricating station is selected. The pump device is thus a distributor device as well.