Abstract: A piston compressor includes at least one cylinder for compressing air with a piston arranged such that it can move therein in a compression chamber arranged above the piston in the cylinder. The compression chamber is connected to an inlet arrangement for air to be compressed and to an outlet arrangement for compressed air, the piston compressor being drivable by a first drive device. The inlet arrangement includes a pre-compression device that can be driven by a second drive device with variable power and is used to increase the suction pressure at the air inlet.

Abstract: A hydrostatic axial piston machine includes a cylinder drum having a substantially hollow cylindrical base body, and liners. The body includes cylinder bores located around a central axis. The liners have an outer diameter press-fitted into the bores such that an outer end face of each liner is positioned in a region of an opening of a respective bore, and such that an inner end face of each liner is positioned deep within the respective bore. An outer half of each liner, starting from the outer end face, includes an axially delimited circumferential recess in an outer casing surface of the liner. The machine is configured to operate with great forces acting between the liners and displacement pistons. The recess in each liner is shaped such that, in an axial section through the liner enclosing an axis of the liner, a depth of the recess increases more than once and decreases more than once.

Abstract: A vibratory cavitation pump is provided that includes a working cylinder having an fluid inlet and a fluid outlet, a rod extending into the cylinder, a piston fixed to the rod, a plate fixed to the rod and spaced from the piston, an activator slidably mounted to the rod between the piston and the plate and an oscillating pumping mechanism operably connected to the rod to move the rod with respect to the working cylinder. The sliding activator creates cavitation in the fluid being pumped to increase the ease of pumping the fluid, such as high viscosity fluids. The pump can also include an external cylinder disposed around the working cylinder to impart rotational motion to the incoming fluid, thereby enhancing the cavitation created in the fluid by the pump, rendering the fluid easy to displace.

Abstract: A spacer forming device according to the present invention includes glass plate fixing means for fixing one glass plate, an applicator head for applying a spacer forming material, spacer forming material supply means having an extruding means that extrudes the spacer forming material while melting and mixing the material and a fixed displacement pump for supplying the spacer forming material extruded from the extruding means to the applicator head, and an articulated robot that moves the applicator head along the periphery of the one glass plate. By using the spacer forming device, the spacer forming material is applied from the applicator head along the periphery of the upper surface of the one glass plate thereon to form a spacer.

Abstract: A hydrostatic transmission mountable to a vehicle frame as a unit. The hydrostatic transmission has a nose cup to which a motor module is mounted. Passageways in an end block connect the pump element and motor module in a closed loop. The end block also has passageways for connecting a charge pump to the closed loop for supplying make-up flow thereto. An isolation plug is provided for separating flow between two intersecting passageways in the end block.

Abstract: A hermetic two stage rotary compressor having a housing with a stationary shaft fixedly mounted in the housing. A motor having a rotor and a stator is mounted in the housing with the rotor being rotatably mounted on the shaft. A pair of compression mechanisms are rotatably mounted on the shaft with one compression mechanism being located adjacent a first end of the rotor, and one compression mechanism being located adjacent a second end of the rotor. The compression mechanisms are operatively associated with the rotor such that rotation of the rotor drives the compression mechanisms. A fluid flow path is defined in the compressor including a plurality of longitudinal bores formed in the stationary shaft. A mounting assembly is attached to the housing so as to mount the compressor in either a substantially horizontal or vertical orientation. The pump is positioned so as to be at least partially immersed in an oil sump in the housing when the compressor in either orientation.

Abstract: An interstage cooling system for the turbocharger of an internal combustion engine is disclosed. Diffuser vanes, turning vanes and/or deswirling vanes are used as the heat exchangers in the interstage duct. A coolant fluid is supplied to the heat exchangers and flows between the heat exchangers in series through internal coolant links or through internal cavities defined by the turbocharger housing.

Abstract: A piston type compressor is disclosed, which comprises a cylinder block having axial cylinder bores, pistons defining compression chambers in the bores, a drive shaft, and a gas suction and discharge chambers in a housing. A valve receiving chamber is formed around the drive shaft in the cylinder block, for accommodating a rotary valve which rotates in synchronism with rotation of the drive shaft. The rotary valve has a suction passage formed therein for providing gases from the gas suction chamber to a compression chamber during the chamber's gas suction stroke. A plurality of gas communication passages are formed in the cylinder block in association with the compression chambers, each having a first port open to the associated cylinder bore and a second port open to the valve receiving chamber. The first port is located at a position (P2) apart by a predetermined distance (L) from a top dead center position (P1) of the associated piston.

Abstract: A piston type compressor is disclosed, which includes pistons disposed in bores of a cylinder block, to be reciprocated by a piston driving mechanism in cooperation with a drive shaft. A valve receiving chamber is formed around the drive shaft in the cylinder block, for receiving a rotary valve to rotate together with the drive shaft. The rotary valve has a suction passage formed therein for providing gases from a gas suction chamber to a compression chamber defined in each bore. A plurality of communication passages are formed in the cylinder block in association with the compression chambers, to provide gas communication between the compression chambers and the valve's suction passage.

Abstract: The cylinder of a reciprocating compressor is provided with a flanged collar defining an annular recess adjacent the side walls of the cylinder bore disposed for entry of the piston skirt during the downstroke into the recess, compressing gas therein. Communication is provided between the recess and the space above the piston and cylinder head, increasing the initial pressure above the piston and causing greater pressure to be developed during the compression stroke. The result is an increase in the volumetric efficiency of the compressor.

Abstract: Vacuum pump of reciprocating piston and cylinder type. Cylinder is stepped to have front large diameter portion and rear small diameter portion. Piston has enlarged head portion sliding in front portion of cylinder and rear portion sliding in rear portion of cylinder. Front end of cylinder is closed to form high vacuum pumping chamber swept by front face of piston head. Gas enters the high vacuum pumping chamber through side wall of cylinder and can be exhausted through exhaust valve in closed front end of cylinder. Rear annular face of piston head sweeps lower vacuum chamber in cylinder behind the piston head. A gas transfer passage extends through cylinder wall from front end of high vacuum pumping chamber to port in cylinder wall so as to transfer gas from high vacuum chamber to lower vacuum chamber when piston approaches end of forward stroke. Gas is transferred through transfer duct at pressures lower than required to open the exhaust valve.