Abstract: A rotary vane pump for delivering a fluid, having a rotary delivery device accommodated in a casing (2), a casing cover (3) arranged on one side of the casing and a bearing flange (4) on the opposite side. A suction zone (12) is formed on each of the sides, and an injector device (114) injects a pressurized fluid into the fluid as it is delivered toward each of the suction zones to thereby assure a uniform admission of the fluid into the cells of the rotary delivery device of the pump. Also a leakage path (13) for the fluid extends between the delivery zone (11) and suction zone (12). The leakage path (13) extends on the inner side (14) of the seal at least in sections parallel to the seal (5,6).

Abstract: A rotary vane pump for delivering a fluid, having a delivery device (1) accommodated in a casing (2), with the casing (2) being closed on the one side by a casing cover (3), and on the other side by a bearing flange (4). A drive shaft (11) extends through the bearing flange (4), the delivery device (1), and optionally the casing (2), and is supported in a passageway formed in the bearing flange (4) and optionally in the casing cover (3). Also, between the delivery device (1) and the inside wall of the bearing flange (4), a side plate (16) is arranged, which supports itself on the inside wall, and centers the delivery device (1) in the casing (2). The side plate (16) is centered on the side facing the bearing flange (4) by a centering collar which extends into the passageway for the drive shaft (11).

Abstract: A rotary vane pump for delivering a fluid, having a delivery device accommodated in a casing (2), a casing cover (3) arranged on one end face, and optionally with a bearing flange (4) adjoining the casing (2) on the side opposite to the casing cover (3). A seal (5,6) is arranged between the casing (2) and the casing cover (3) and optionally between the casing (2) and the bearing flange (4), and the seal (5,6) is inserted into a groove (8,9) formed in the casing cover (3), and optionally in the bearing flange (4), and/or in the respective end face (7) of casing (2). Also a leakage path (13) for the fluid extends between a delivery side (11) and suction side (12). The leakage path (13) extends on the inner side (14) of the seal at least in sections parallel to the seal (5,6).

Abstract: Pressurized medium delivery device with a pump, a suction pipe, at least one pressure pipe and a pressurized medium supply volume in a pressurized medium supply container.

Abstract: The invention relates to an axial piston motor (1), especially a compressor for the air conditioning system of a motor vehicle, comprising a housing (2) and a compressor unit (6). Said compressor unit is driven by a drive shaft (8), is arranged in the housing (2), and is provided for sucking and compressing a cooling medium. The compressor unit (6) comprises pistons (15) which move in a reciprocating motion in a cylinder block (18) and comprises a drive disc (11) which rotates with the drive shaft (8) and which drives the pistons (15). The aim of the invention is to obtain a delivery rate which is independent of rotational speed. To this end, the invention provides that the mass of the drive disc (11) is calculated such that the centrifugal forces generated when the drive disc (11) is rotating are large enough to counteract the pivoting movement of the drive disc (11) while actively regulating the same, and to influence the piston stroke and thus the delivery rate, especially to reduce or to limit the same.

Abstract: The invention relates to a valve arrangement with a pressure limiting valve and a flow regulator valve, which comprises a flow regulator piston, having at least one first hydraulic resistor, distinguished in that the flow regulator valve's (5) flow regulator piston (15) has a split pressure return surface and in that the first part (ring surface (45)) of the pressure return surface is capable of working at a pressure p1 and a second part (annulus surface (31)) of the pressure return surface is capable of working at a pressure p2.

Abstract: The invention relates to a valve arrangement with a pressure limiting valve and a flow regulator valve, which comprises a flow regulator piston, having at least one first hydraulic resistor, distinguished in that the flow regulator valve's (5) flow regulator piston (15) has a split pressure return surface and in that the first part (ring surface (45)) of the pressure return surface is capable of working at a pressure p1 and a second part (annulus surface (31)) of the pressure return surface is capable of working at a pressure p2.

Abstract: The invention relates to a hydraulic delivery device with a displacement unit which delivers a medium from a suction connection under output pressure to a pressure connection, connectable with a consumer, and under consumer pressure, and a regulating device for setting and/or limiting a volume flow delivered by the delivery device.

Abstract: A compressor, in particular for a vehicle air conditioning system, with a housing, which contains a device for conveying a compressed medium driven by a drive shaft, designed as an axial piston machine and having at least one piston reciprocating in a cylinder block and a take-up plate connected to the piston working in combination with a swash plate rotating around a rotational axis, whereby the swash plate is connected to the drive shaft by a carrier and whereby the take-up plate encompasses a support device working in combination with a non-rotating thrust bearing.

Abstract: A pump comprises a housing and a pump unit arranged therein. The pump unit comprises a first and a second thrust plate and a ring arranged therebetween and having a through opening. The ring rests on the two thrust plates at least at an outer peripheral region thereof, and a pressure chamber is formed between the second thrust plate and the housing. A spacer supports the first thrust plate at a distance from the housing, and the spacer is associated at least in part with a radially inner surface area of the first thrust plate opposite the through opening. This allows deformation of the first thrust plate under operational pressure so as to hinder formation of a gap between the thrust plate and the pump insert.

Abstract: The invention relates to a hydraulic delivery device with a displacement unit which delivers a medium from a suction connection under output pressure to a pressure connection, connectable with a consumer, and under consumer pressure, and a regulating device for setting and/or limiting a volume flow delivered by the delivery device.

Abstract: A compressor for an air-conditioning system of a motor vehicle is proposed, which has a controllable compression medium feed mechanism powered by a drive shaft and which, for example, is powered by the combustion engine of the motor vehicle by a belt driven by a drive shaft, where the belt is coupled with the drive shaft of the compressor. The compressor is characterized by the drive wheel (29) having a belt pulley body (31) engaged with the belt (33) and coupled via an elastic coupling element (35) with the drive shaft (7), and by the drive shaft (7) being equipped with a torque limiting mechanism (predetermined fracture point (65)). In the case of another version, it is envisaged that the support mechanism (127) contains a projection (137) protruding from the take-up plate (11) and preferentially forming a single piece with this, as well as a supporting element (139).

Abstract: An oil suction filter having an enclosed housing with a base surface and an oil intake opening, a top surface with an oil discharge opening, and a filter usually in the form of a filter cloth in the housing between the intake opening and the outlet. In one form, an oil diverting device at least partially surrounds the oil intake opening. In another form, an oil flow diverting device is provided at either or both of the oil intake opening and the oil outlet. In another form, an oil filter cloth has various densities, thicknesses or layers that control the flow. All the foregoing is for the purpose of minimizing formation of large air bubbles passing through the suction filter. Further, beads in the housing may keep the filter cloth off the base surface.

Abstract: A pump having a pump housing with a rotor in it, particularly a vane pump. The pump housing having a centering aid in the form of a sleeve that extends toward a drive shaft. The shaft has a smaller diameter than the bore through the sleeve. The shaft has a preferably toothed end portion that is received in a non-positively locking manner in the rotor. In a single stroke vane pump, the axis of the drive shaft is offset from the axis of the sleeve to compensate for the forces in pumping. The housing over the rotor and drive thereto is disclosed.

Abstract: A pump for conveying a medium, in particular hydraulic oil, comprising a flow-control valve for controlling the flow of medium conveyed by the pump and a discharge channel (7) releasable by the flow-control valve. In order to prevent cavitation, a flow divider (17) is provided for dividing the discharge jet flowing into the discharge channel (7) and extends into the said discharge channel (7), and is spaced by a distance (a) from an orifice (9) of the discharge channel (7) facing the flow-control valve.

Abstract: An oil suction filter having an enclosed housing with a base surface and an oil intake opening, a top surface with an oil discharge opening, and a filter usually in the form of a filter cloth in the housing between the intake opening and the outlet. In one form, an oil diverting device at least partially surrounds the oil intake opening. In another form, an oil flow diverting device is provided at either or both of the oil intake opening and the oil outlet. In another form, an oil filter cloth has various densities, thicknesses or layers that control the flow. All the foregoing is for the purpose of minimizing formation of large air bubbles passing through the suction filter. Further, beads in the housing may keep the filter cloth off the base surface.

Abstract: A pump for supplying fluid, in particular hydraulic oil, comprises a drive shaft extending into the interior of the pump housing and the shaft is mounted on at least one bearing device lubricated by a partial flow of the fluid supplied. A sealing device seals the radial gap between the housing of the pump and the drive shaft. The sealing device comprises a sealing ring of substantially U-shape cross-section. One arm of the U forms a first sealing portion resting against the drive shaft under pre-stress. The other arm of the U forms a second sealing portion resting under pre-stress against a sealing face of the housing surrounding the drive shaft. The sealing ring has a sealing area connecting the first and second sealing portions and forming the base of the U and facing the interior of the pump so that the first and second sealing portions extend from the sealing area in a direction away from the interior of the pump.

Abstract: The invention relates to a vane pump with a rotor which receives vanes, with two pressure plates (17) which bear sealingly on the rotor and of which one is arranged on a delivery side of the vane pump and one on the opposite side, and with a contour ring surrounding the vanes and forming two suction and discharge regions, at least one of the two pressure plates being provided with inlet and outlet orifices (53, 59, 63a, b) which make a fluid connection between a discharge region and an undervane region. The invention is distinguished in that the pressure plate (17.2) located opposite the delivery side has an orifice, which makes a fluid connection between a discharge region and a pressure space (61) partially delimited by this pressure plate (17.2), and seals off the pressure space (61) relative to the other discharge region.

Abstract: A hydraulic machine is proposed, with a drive shaft rotating around a center axis, a drive wheel at a first end of the drive shaft, via which forces, which are characterized by a force component running largely vertical to the center axis, are led to the drive shaft, a second, opposite end of the drive shaft with a pump unit, which is characterized by a first rotating pump element connected to the drive shaft and a fixed pump element which works in conjunction with the first pump element, and with a bearing unit for the drive shaft, the hydraulic machine is characterized by the fact that the bearing unit (33) is offset to the line drawn by the middle axis (13) when the drive shaft (27) is not under load, where the bearing unit (33) is positioned in the direction of the force components relative to the center axis (13).

Abstract: A vane pump is proposed which has a rotor which accommodates a number of vanes that can move in the radial direction, has a cam ring which surrounds the rotor and forms at least one suction region and one pressure region, and has at least one pressure plate, which forms a lateral boundary surface of the suction and pressure regions and, when the vane pump is operating, is loaded by pressure on its side facing away from the suction and pressure regions, the pump being defined in that that surface (17; 19) of the pressure plate (13; 15) which faces the rotor (5) is designed to be concave--when there is no pressure in the vane pump (1).