Abstract: A piston for a compressor is disclosed. The piston for the compressor compressing and discharging a refrigerant sucked into a cylinder includes a sliding portion disposed in the cylinder and having a suction space to receive the sucked refrigerant, a head portion coupled to the sliding portion, a compression space being formed at a front of the head portion and the suction space being formed at a rear of the head portion, the head portion comprising a suction port communicating the suction space with the compression space, a press-fit cap coupled to the front of the head portion, the press-fit cap comprising a suction hole connected to the suction port, and a first elastic member disposed between the press-fit cap and the head portion. A gas layer is formed between the head portion, the press-fit cap, and the first elastic member.

Abstract: A method (100) for operating a gas bearing (1), wherein the gas bearing is formed by a rotor (11) and a stator (12), wherein when there is rotation against a stator (12) with a lift-off rotational speed nL the rotor (11) changes from mixed friction with the stator (12) into fluid friction with a medium (13) located between the stator (12) and the rotor (11), wherein the rotational speed of the rotor (11) is kept at or above an idling rotational speed nI, wherein—in response to a first information item (21), on the basis of which a change ?F is to be expected in the acceleration forces F acting on the gas bearing (1), a new value of a safety factor rN:=nI/nL between the idling rotational speed nI and the lift-off rotational speed nL is determined (110), and/or—in response to a second information item (31), on the basis of which a change ?nL is to be expected in the lift-off rotational speed nL, a new value nL,neu is determined for the lift-off rotational speed nL (120), wherein the idling rotational speed nI o

Abstract: A non-polluting, zero hazardous gas emission electricity generating hybrid system is provided with a hydraulic pressure drive cylinder. To one end of the linear movement drive cylinder is connected with a fluid reservoir containing the fluid to be supplied to the drive cylinder. The fluid from the reservoir is pressured through the inlet pipes by the mechanical pump electrically connected to the motor positioned on top of the said fluid reservoir. To the other end of the linear movement drive cylinder is provided an outlet means for collecting the said fluid into the fluid reservoir enabling the linear movement for the hydraulic cylinder.

Abstract: The invention relates to a high-pressure fuel pump (1), in particular of a common rail injection system of an internal combustion engine, having a pump cylinder head (3), having an intake valve (6) arranged in the pump cylinder head (3) in the direction of a pump cylinder axis, and a high-pressure fuel outlet (5) arranged laterally on the pump cylinder head (3), wherein a protective cap (10, 10a) at least partly covering the high-pressure fuel pump (1) is provided. According to the invention, a high-pressure fuel pump (1) having a protective cap (10, 10a) is provided, in which the protective cap (10, 10a) can be mounted without difficulty on an assembled high-pressure fuel pump (1).

Abstract: An energy conversion device includes a vehicle. The vehicle includes a wheel. The wheel includes a chamber. The chamber is configured to contain a fluid. The fluid is configured to produce centrifugal energy. The wheel is configured to rotate and produce energy from the centrifugal energy.

Abstract: An apparatus for mixing and pumping manure slurry from a manure pit comprises a pump unit having first and second mixing rotors and a pumping rotor. In operation, the first mixing rotor draws solids downwardly towards the pump unit while the second mixing rotor redirect a portion of the solids drawn by the first mixing rotor away from the pump unit, thereby allowing to control the ration of solid contents in the slurry pumped by the pumping rotor. A non-diverted flow distribution arrangement is also provided for selectively connecting the pump outlet in straight-through flow connection with either a drainage pipe or a re-circulation pipe.

Abstract: The invention concerns a pump cart for a biological liquid treatment installation, having a first lateral face (40), and a second lateral face (41) by which it is configured to be juxtaposed against a conveying network cart (1) of the installation and a front face (42) meeting the lateral faces (40, 41), and comprising at least one pump (414), a pump support (50) on which is mounted said pump (414), and a guide member for making said pump (414) movable in translation and on which said support (50) is mounted; said support (50) being movable in translation in a direction going from the first lateral face (40) towards the second lateral face (41); whereby said pump (414) is disposed at a predetermined location on said cart (2) depending on the type of treatment carried out.

Abstract: A plate is interposed between a rear cover and a pump body. The pump chamber is formed between the plate and the pump body.

Abstract: The air pump is installed on the frame of a bicycle which utilizes the sprocket of the bicycle as the power source. The air pump contains a cylinder member, a transmission member, and a positioning member. The positioning and transmission members are connected to the cylinder member. The positioning member allows the adjustment and positioning of the cylinder member along the bicycle frame so that the cylinder member can be engaged by a front sprocket of the bicycle. The transmission member contains a shaft and a gear. The shaft has one end connected to the cylinder member and another end connected to the gear. When a rider rotates the front sprocket, the rotational power is delivered to the gear and then to the shaft of the transmission member, which in turn drives the cylinder member to pump air for inflation.

Abstract: There is provided a vacuum pump mounting structure. A vacuum pump is connected to an axial end portion of a first cam shaft of an engine and is configured to be driven by the first cam shaft. The first cam shaft is disposed in a cylinder head. A cam housing rotatably supports the first cam shaft on the cylinder head. A cam housing-side boss portion and a cylinder head-side boss portion are formed in the cam housing. An engine-upper side of a body portion of the vacuum pump is fixed to the cam housing-side boss portion. An engine-lower side of the body portion of the vacuum pump is fixed to the cylinder head-side boss portion.

Abstract: Methods and apparatus for lubricating suspension seals by pumping fluid to the seals using a compression or rebound action of a suspension component.

Abstract: A machine having a pump overspeed protection system operating thereon includes an internal combustion engine, a plurality of ground engaging elements, and a drivetrain coupling the internal combustion engine and the ground engaging elements. The drivetrain includes a torque converter having a locked configuration and an unlocked configuration. The machine also includes a plurality of pumps driven by the internal combustion engine. An electronic control is in communication with the internal combustion engine, the torque converter, and the plurality of pumps.

Abstract: Disclosed herein is an apparatus for generating air pressure in an eco-friendly vehicle that includes an engine driven air compressor operated by an engine, an electric air compressor operated by a battery, and an air tank connected to an outlet of the engine driven air compressor and to an outlet of the electric air compressor so as to store air which is pressurized. A method for generating air pressure in an eco-friendly vehicle includes an operation start air pressure determination step to compare air pressure in the air tank with operation start air pressure, an engine drive determination step to determine whether or not the engine is being operated when the air pressure is less than the operation start air pressure, an electric air compressor operation step to operate the electric air compressor, and an engine driven air compressor operation step to operate the engine driven air compressor accordingly.

Abstract: The invention relates to a speed regulator of a bicycle, which speed regulator is in the rear hub or the pedal centre of the bicycle, which includes one or more hydraulic pumps which is rotated by a rear pinion or by the pedals, which hydraulic pump rotates one or more hydraulic motors, which hydraulic motor/hydraulic motors rotates/rotate the rear wheel of the bicycle. According to the invention, the rotation speed of the hydraulic pump can be steplessly changed when the rear pinion or the pedals rotate at constant speed.

Abstract: A floor finish applicator including a cart having wheels and a body member constructed and arranged to receive a source of floor finish. The floor finish applicator also includes a pump coupled to the cart and operable to deliver floor finish to a floor, a floor finish feed conduit in fluid communication between the pump and a container supporting floor finish, and a transmission assembly coupled to the cart. The floor finish feed conduit supplies floor finish to the pump. The transmission assembly includes an axle coupled to and driven by a wheel of the cart, a drive gear connected to the axle, a drive shaft having a driven gear for engaging the drive gear and driving the pump, and a hand-actuated spring-loaded clutch for selective engagement of the pump and the drive shaft with the axle.

Abstract: A motor vehicle system device having a drive assembly, to which a charging device is assigned, has a compressor having at least one compressor runner supported using at least one bearing, the bearing having a stationary first bearing part and a second bearing part that is operatively connected to the compressor runner. An overpressure source is connected to the bearing, using which an overpressure is able to be produced in a bearing gap that is present between the first bearing part and the second bearing part. The overpressure source is the compressor and/or a part of a tandem pump, which besides the overpressure also makes available low air pressure for a user of the motor vehicle system device. The invention also relates to a method for operating a motor vehicle system device.

Abstract: An integrated compressor and pump unit suitable for installation on a vehicle and draw rotary power from a power source of the vehicle. The unit includes a compressor unit and a separate pump unit. The compressor unit has a rotary input shaft coupled to a rotary compressing device of the compressor unit. The pump unit is mounted to the compressor unit and has a rotary input shaft coupled to a rotary pumping device of the pump unit. The pump unit is secured to the compressor unit and rotary motion is transferred from the rotary input shaft of the compressor unit to the rotary input shaft of the pump unit such that the rotary compressing and rotary pumping devices operate in unison and in series.

Abstract: A floor finish applicator including a cart having wheels and a body member constructed and arranged to receive a source of floor finish. The floor finish applicator also includes a pump coupled to the cart and operable to deliver floor finish to a floor, a floor finish feed conduit in fluid communication between the pump and a container supporting floor finish, and a transmission assembly coupled to the cart. The floor finish feed conduit supplies floor finish to the pump. The transmission assembly includes an axle coupled to and driven by a wheel of the cart, a drive gear connected to the axle, a drive shaft having a driven gear for engaging the drive gear and driving the pump, and a hand-actuated spring-loaded clutch for selective engagement of the pump and the drive shaft with the axle.

Abstract: A mechanical combustion engine coolant pump for pumping a coolant for an internal combustion engine includes a pump wheel. A rotor shaft is arranged at the pump wheel. The rotor shaft is rotatable and radially supported. A driving wheel is rotatable, radially supported is driven by the internal combustion engine. A connecting device is connects the rotor shaft with the driving wheel so as to be rotatably fixed. A first roller bearing comprises a separate outer bearing ring. The separate outer bearing is directly fixed to a pump frame body. The first roller bearing directly radially supports the rotor shaft or the driving wheel. A separate bearing fixation structure axially pushes the separate outer bearing ring of the first roller bearing so as to be clearance-free against the pump frame body so that the separate bearing fixation structure is directly fixed to the pump frame body.

Abstract: A high-pressure fuel injection pump, including a sound-damping acoustic cover, is mounted on an engine and is part of a direct-inject fuel system for a vehicle. In an exemplary embodiment, the acoustic cover includes a top portion that fits over the fuel injection pump and a side portion that mechanically engages the fuel injection pump, and at least one of the top or side portions is formed from a sound-damping metal laminate material. Sound and/or vibrations that emanate from the fuel injection pump may be transferred to the acoustic cover and converted into thermal energy by the sound-damping metal laminate material.

Abstract: Disclosed is a turbo pump in which a pump impeller is connected to one end of a rotary shaft and a turbine is connected to the other end of the rotary shaft. The turbo pump is designed such that an equivalent region, between a turbine efficiency curve obtained on the basis of a conditional expression where the number of rotations of the rotary shaft is maintained constant regardless of a pump flow rate and a turbine efficiency curve of an actual machine, becomes an operation region.

Abstract: A system, including a motion-driven air compressor, configured to compress air in response to motion of a vehicle, and an air storage enclosure configured to store a compressed air from the motion-driven air compressor, wherein the system is configured to deliver the compressed air to a vehicle subsystem to decrease a cost of operating the vehicle.

Abstract: A tile flood pump for attachment to a tile or drain pipe and pumping water from a field. The pump includes a pump housing, a flange bolted to the tile and an impeller housing enclosing one or more, lower rotating impellers, and extending into the pump housing for pumping water from the field through the impeller housing and the tile. A flapper valve can be provided on the intake end of the pump housing to facilitate flow of water through the pump housing and the tile. A shaft housing extends into the pump housing for enclosing a drive shaft that mounts the lower impeller(s) and connects to an external drive system. A shaft housing extension is removably fitted into the shaft housing for enclosing an upper impeller to flood and cool the upper marine and load bearings which carry the impeller shaft, upon which the upper impeller is mounted.

Abstract: A method for controlling power consumption of a compressor of an automotive vehicle climate system may include identifying an energy source providing energy to power the compressor and selecting an operating parameter of the climate system based on the identified energy source to control power consumption of the compressor.

Abstract: A compressor for use in a vehicle includes a mechanical compression mechanism including a first casing and a drive shaft. The first casing has therein a first suction chamber and a first discharge chamber. The drive shaft is rotatably supported by the first casing and mechanically driven by a drive source for compression of refrigerant. The compressor further includes a linear electric compression mechanism including a second casing and a piston. The second casing has therein a second suction chamber and a second discharge chamber. The piston is reciprocally movable in the second casing and driven by electromagnetic force for compression of refrigerant. The first casing is integrated with the second casing so as to allow at least one of fluid communication between the first suction chamber and the second suction chamber and between the first discharge chamber and the second discharge chamber.

Abstract: A compressor system and method of operating same are provided for the compressed air supply of a commercial vehicle, wherein the compressor system includes a compressor for compressed air generation, a transmission for transmitting torque from a drive motor to the compressor, a clutch for disconnecting the connection between compressor and drive motor, and a control unit for opening and closing the clutch. The control unit is capable of opening the clutch in the event a settable maximum allowed compressor speed or motor speed of the drive motor is exceeded and to close the open clutch temporarily when the motor speed is greater than the maximum allowed motor speed.

Abstract: A manually operated pump for a bicycle comprises two cylindrical members with a first cylindrical member slidable within a second cylindrical member. One end of the first cylindrical member is provided with a fitting to receive a saddle while one end of said second cylindrical member is provided with a foot stand assembly which comprises a foldable foot stand and a retractable air hose. The pump is designed to be received in the seat post of the bicycle frame and the two cylindrical members are arranged to be releasably connected together in a closed position.

Abstract: A vehicle control device using brake hydraulic pressure includes a hydraulic unit having a housing and an electronic control unit having a casing. The housing of the hydraulic unit is mounted on a mounting surface of the casing of the electronic control unit so that the casing of the electronic control unit protrudes from the housing of the hydraulic unit to one side. On the protruding area of the casing, a bulge is formed in which a vehicle behavioral sensor is mounted. A control connector is also provided on the protruding area of the casing. The bulge does not protrude from the substantially square contour of the vehicle control device. Thus, the bulge will scarcely increase the installation space of the vehicle control device. A vehicle behavioral sensor is mounted on a small substrate.

Abstract: The present invention is a pump control and distribution system consisting of a pump and reversing flow control valve with a single-handle to control flow direction and flow rate of a liquid. The system can be operated at a rate of 0 to 300 gallons per minute and the flow reversed or stopped with a single motion of the operating handle. The flow rate of the liquid can be precisely controlled in either direction, along with the liquid pressure. This allows the use of a constant speed pump turning in one direction and gives the operator the ability to control the product transfer regardless of viscosity or volume. A purge valve connected to the outlet of the pump is used to remove substantially all retained liquid in the system after transfer of liquid is complete. The system can be mounted to a vehicle for delivery of bulk liquids.

Abstract: A reservoir for a hydraulic pump system includes a reservoir body, an inner wall dividing an interior of the reservoir body into a first pressure chamber and a second pressure chamber, and a one-way valve connecting the first pressure chamber and the second pressure chamber. A piston assembly forms a first cylinder portion connected to the first pressure chamber and a second cylinder portion that is vented. The piston is movable within the cylinder under the influence of a biasing member to increase and decrease the overall volume of the first pressure chamber. The piston pressures a piston pump inlet connected to the first pressure chamber and maintains a constant pressure within the first pressure chamber under a variety of piston pump operating conditions.

Abstract: The present invention is directed to a manual bulk liquid pump control and distribution system that utilizes a single-handle manual operation for direction of flow and speed, along with providing a neutral position for standby. The system can be operated at a rate of 0 to 250 gallons per minute and be reversed with a single motion of the operating handle. The pump operates in one direction at a fixed RPM, resulting in longer pump life and safer operation. For added safety, the system utilizes the pump's relief valve for both discharge and suction operation. It has the ability of sucking the liquid out of the lines and hoses after each transfer operation. This system has an aluminum flow-reversing valve or two-way valve at the center of the design. This valve allows the flow of the product to be precisely controlled in either direction, along with the flow rate and pressure. This gives the operator the ability to control the product regardless of viscosity or volume.

Abstract: A method and computer program product for identifying one or more malfunctions in a locomotive air compressing system is provided. Some of the malfunctions may be correctable onboard a locomotive, and constitute onboard serviceable malfunctions, while the remaining of the malfunctions may only be correctable with the air compressing system being uninstalled and serviced at an off-board servicing site, such malfunctions constitute off-board serviceable malfunctions. The method allows monitoring responses indicative of a malfunction type that may be associated with at least with one of the following: a corrective action that may be performed onboard the locomotive, and a corrective action that may only be performed off-board the locomotive.

Abstract: A tile flood pump for attachment to a tile or drain pipe and pumping water from a field through the tile or drain pipe to a drainage ditch or canal. The tile flood pump is characterized by a pump housing fitted with a flange for removably bolting to the existing tile or pump embedded in a levee or dike separating the field from the drainage canal and an impeller housing enclosing one or more shaft-mounted, lower rotating impellers, the impeller housing typically having impeller housing flanges for access to the lower impeller(s) and extending into the pump housing in angular relationship for pumping water from the field through the impeller housing and the tile, into the ditch.

Abstract: A multiple pump unit is used for operating a plurality of actuators, and includes a plurality of pump shafts and a plurality of hydraulic pumps. The plurality of pump shafts is driven by an electric motor. The plurality of hydraulic pumps is driven by the plurality of pump shafts. Pressurized oil for operating the plurality of actuators is fed out from the plurality of hydraulic pumps.

Abstract: A water pump includes an impeller provided at a first end of a rotational shaft supported by a body via a bearing, a mechanical seal provided between the impeller and the bearing, a draining hole introducing a water drop leaked from an impeller side via the mechanical seal to a reservoir provided at a bottom of the body and having a side opening, a plugging member provided at the side opening of the reservoir for liquid-tightly sealing the reservoir, and an opening portion provided at the plugging member for communicating the reservoir and an atmosphere side.

Abstract: An apparatus for use in combination with a tractor having a hydraulically adjustable rearwardly facing three-point implement hitch and a rear power takeoff is described for use in evacuating a body of water. The apparatus includes a mounting frame attachable to the rearward facing three-point implement hitch. A pump having a water inlet, a water outlet and a rotatable drive shaft with a drive pulley is carried on the mounting frame. A drive means connecting the pump drive pulley to the rear power takeoff is usable to transfer power to the pump. A suction hose having a proximal end is attached to the water inlet of the pump and a distal end that preferably includes a debris strainer. A discharge hose is attached to the water outlet of the pump.

Abstract: The transfer case pump bracket for use with a fluid pump in a transfer case of a vehicle is at least partially received within a pump cavity between the transfer case and the fluid pump. The transfer case pump bracket comprises a base member and one or more support members extending from the base member. The base member is configured to be positioned between the fluid pump and the transfer case when the fluid pump is assembled to the transfer case with the support members being adapted to be received within an indent portion of the pump cavity to at least partially inhibit the fluid pump from contacting the transfer case proximate the indent portion of the pump cavity.

Abstract: The present invention is directed to a manual bulk liquid pump control and distribution system that utilizes a single-handle manual operation for direction of flow and speed, along with providing a neutral position for standby. The system can be operated at a rate of 0 to 250 gallons per minute and be reversed with a single motion of the operating handle. The pump operates in one direction at a fixed RPM, resulting in longer pump life and safer operation. For added safety, the system utilizes the pump's relief valve for both discharge and suction operation. It has the ability of sucking the liquid out of the lines and hoses after each transfer operation. This system has an aluminum flow-reversing valve or two-way valve at the center of the design. This valve allows the flow of the product to be precisely controlled in either direction, along with the flow rate and pressure. This gives the operator the ability to control the product regardless of viscosity or volume.

Abstract: A tile flood pump for attachment to a tile or drain pipe and pumping water from a field through the tile or drain pipe to a drainage ditch or canal. The tile flood pump is characterized by a cylindrical pump housing fitted with a flange for removably bolting to the existing tile or pump embedded in a levee or dike separating the field from the drainage canal and a cylindrical impeller housing enclosing one or more shaft-mounted rotating impellers, the impeller housing extending into the pump housing in angular relationship for pumping water from the field through the pump housing and the tile and into the ditch. A pump housing flapper valve on the intake end of the pump housing can be selectively open or closed by a control rod mechanism to facilitate a flow of water by direct drainage through the pump housing and the tile into the ditch, or for pumping water through the impeller housing, the pump housing and the tile when the water in the ditch is at a higher level than the water in the field.

Abstract: A mobile concrete pumping vehicle including a reduced-weight boom arm. The pumping vehicle includes a boom arm that is extendible between a folded position and an extended position. The boom arm carries molded and fabricated composite boom pipe sections. Each pipe section is formed from a composite material having a reinforcing outer layer and a wear resistant inner layer. Preferably, the outer layer is formed using a filament winding process while the inner layer is molded of wear resistant urethane. Each boom section is formed by centrifugal molding a urethane tube then secondarily winding carbon fiber onto the exterior of the tube. The centrifugal force created by the rotating mold provides a bubble free urethane tube. The filament winding provides the hoop strength needed to withstand the internal pressures of the concrete pumping process.

Abstract: In a flat-type blower unit disposed in a narrow space between a bottom portion of a front seat and a vehicle floor in a vertical direction, a motor-attachment bracket part for attaching a fan motor is integrally formed with a drive circuit cover part for covering a motor drive circuit to construct a motor attachment bracket having heat-generating components which generate heat when being operated. The motor attachment bracket is disposed to protrude radial outside from the fan motor, so that a dimension of the motor attachment bracket in the vertical direction can be reduced.

Abstract: An in-line gas compression system, comprising a vehicle, preferably a truck, having a drive train, with a gas compressor mounted on the vehicle and driven by the drive train of the vehicle. The gas compressor is connected through a filter to a gas inlet and has a compressed gas outlet line. When a rotary screw gas compressor is used, an oil and gas separator is provided on the compressed gas outlet line, with the oil and gas separator being connected to return oil to the rotary screw gas compressor. The in-line gas compression system is typically connected into a gas pipeline system through the compressed gas outlet line, and is connected to a source of gas, for example a well at a well site.

Abstract: A portable high capacity air compressor system comprises an air compressor with a hydraulic motor coupled thereto to form a compact compressor unit, and a removable air reservoir which is releasably attached to the compressor unit.

Abstract: A tire pump, which is adapted to be secured on a bicycle, includes an elongate mounting frame, a cylinder, a piston, a hinge member, and a lever. The mounting frame has first and second ends. The cylinder has a rear end pivotally secured to the second end, and a front end spaced apart from the rear end and disposed to be proximate to the first end. The piston is disposed to reciprocate within the cylinder so as to pump air out of an outlet in the rear end to inflate a bicycle tire. The cylinder further has a piston rod with a fixed end secured to the piston in the cylinder and a coupling end extending axially and outwardly of the front end. The hinge member includes a fixed knuckle member and a movable knuckle member. The fixed knuckle member is disposed on the coupling end.

Abstract: A water removal apparatus is provided which enables the user to remove water from a wet surface, such as a back yard lawn or sports field. The apparatus includes a frame structure, a press member, and a water removal system. The press member is rotatably mounted to the frame structure. The press member has openings through which water passes. The water is temporarily collected within the press member as the press member is rolled across the wet surface. The water removal system removes the water from the press cylinder and places it in a storage member. The water may then be transported to a different area, and the storage member drained.

Abstract: An air compressor system within a vehicle including an electric air compressor adapted for removable securement within an engine compartment of a motor vehicle. The air compressor has wiring coupleable with a battery of the motor vehicle. An air hose is provided having a first end secured in communication with the air compressor. The air hose is extendable through an underside of the motor vehicle with a second end thereof extendable outwardly of the motor vehicle. The second end has a universal coupling disposed thereon. A pneumatic tool is provided having an inlet valve adapted for coupling with the universal coupling of the air hose.

Abstract: A tuned resonant oscillating mass pump is shown, and particularly a pump structure and assembly which can be conveniently and readily mounted inside automotive tires for the purposes of maintaining optimum tire pressure and generating of electrical power from the movement of the tuned oscillating mass in such pumps. The oscillating mass can be a pendulum or a freely moving weight or a ball rolling within an arcuate chamber.

Abstract: A hybrid vehicle has a clutch between the engine and the rotational electrodynamic unit. A driving energy transmission mechanism is provided between the clutch and the rotational electrodynamic unit for transmitting driving energy to an appliance such as an alternator. When driving the engine, the clutch is closed by a clutch controlling unit, and the engine makes the rotational electrodynamic unit function as a generator to operate the appliances. When the engine is stopped, the clutch is opened by the clutch controlling means, and the rotational electrodynamic unit is caused to operate as a motor to operate the appliances. In the system where the appliances are driven by the engine, the appliances are kept being operated even after the engine stops. This structure is applicable to both a series hybrid vehicle and a parallel hybrid vehicle.

Abstract: A device (10), and a method for forming such a device (10), for a fluid system for a vehicle, comprises first and second members (12, 13). The first member (12) is adapted for direct mounting on the chassis or engine of a vehicle (11); the second member (13) defines at least part of a leak tight fluid chamber (15) of the device (10). The first member (12) is of a thermoset material suitable for withstanding operating conditions and loads associated with direct mounting of the device (10) on the chassis or engine (11), and the second member (13) is of a thermoplastic material suitable for welding to ensure leaktightness of a fluid chamber (15). The second member (13) is interlocked with the first member (12) during moulding thereof.

Abstract: A hygienic tank truck pump for pumping liquid articles of food, such as milk, from either a stationary tank to the tank of a tank truck or between the tank truck and a tailer trunk coupled to the tank truck. The hygienic pump includes a side channel pump, a hydraulic motor for driving the side channel pump, and a hydraulic system of the tank truck for supplying hydraulic fluid to the motor. As a result, the tank truck pump is self-priming and presents a high capacity relative to weight and the capability of simple cleaning.