Abstract: The invention relates to an internal gear pump for a braking system, in the pump housing of which an inner toothed hollow wheel and a gearwheel engaging in the toothing of the hollow wheel are mounted to rotate about parallel axes. The toothing thereof defines a tapering roughly crescent-shaped pump chamber, in which a filling piece is arranged supported along the length thereof. The circumferential surfaces of the filling piece closely correspond to the head diameter of the inner toothing of the hollow wheel or the gearwheel toothing and contact in a sealing manner with several tooth crowns covered thereby. A radial supporting force acts over a longitudinal range of the filling piece for improved sealing of a circumferential surface of the filling piece against the tooth crowns supporting the circumferential surface.

Abstract: The invention relates to an internal gear pump for a brake system, in the pump housing of which an internally toothed ring gear and a pinion meshing with the toothing of the ring gear are pivotally supported about parallel axes. As a result the toothing thereof limits an approximately crescent-shaped tapering annular space, in which a filler piece supported toward the intake side of the pump is arranged. The circumferential sides of the filler piece are bent in accordance with the addendum circle of the ring gear toothing or of the pinion toothing. The sides rest against several tooth tips in a sealing manner under a spring force. According to the invention, one of the two circumferential sides of the filler piece is formed by a radially resilient circumferential wall, which is nestled against the tooth tips of the pinion or the ring gear due to the deflection based on the inherent spring force thereof.

Abstract: A support ring of a sealing ring of a piston pump of a slip-controlled vehicle brake system is designed with longitudinal grooves in order to prevent a pressure build-up between the sealing ring and the support ring due to slip leakage.

Abstract: A double internal gear pump has two internal gear pumps having a common pump shaft. A partition is formed between the two internal gear pumps, and the partition has a frustoconical circumferential surface which contacts an opposing surface in a sealing manner in a pump housing. Pump inlets and pump outlets can be led through the partition. The frustoconical circumferential surface of the partition is advantageous because it removes the necessity of pressing into the pump housing and canting the partition. In addition, a seal on the circumference of the partition is ensured with great reliability.

Abstract: The disclosure relates to an internal gear pump for a slip-regulated hydraulic vehicle braking system, comprising one pressure piece on either side of the gear wheels of said pump. According to the disclosure, a disk consisting of wear-resistant material is arranged between the pressure piece and the gear pump. The pressure pieces can be manufactured from plastic to reduce costs.

Abstract: A seal arrangement includes a cylinder element, a piston which is accommodated in the cylinder element and can be driven to perform an axial reciprocating movement, and a sealing element for sealing a working space delimited by the piston and by the cylinder element, wherein the sealing element has a sealing side, a supporting side opposite the sealing side, a high-pressure side facing the working space to be sealed, and a low-pressure side facing away from the working space, and wherein the sealing side comprises at least one sealing lip formed by two converging sealing flanks of differing flank angles, wherein the sealing element is a component which is in the form of a single part, is composed of a standardized elastomer material, and has at least one marking for determining installation of the sealing element in the correct position.

Abstract: A piston pump having a retaining device for retaining a spring element for restoring a closing element of a valve; the retaining device includes a receiving region for receiving and bracing the spring element and an integrally formed sealing region, in order to seal off a pressure chamber from a low-pressure region of the piston pump.

Abstract: The invention relates to a magnet valve, having a valve housing in which a valve body provided with a valve seat is at least partly disposed. A valve tappet is supported longitudinally displaceably in the valve housing and cooperates with the valve seat. A sealing body is provided so as to sealingly close off the valve housing on one of its ends. According to the invention the valve housing has an axial ring rib, which sealingly axially engages an annular groove of the sealing body.

Abstract: The invention relates to a brake system for a vehicle, with a main brake cylinder, a fluid control unit, and at least one wheel brake. The fluid control unit has, for brake pressure modulation in at least one brake circuit a switchover valve, an intake valve and a recirculating pump for each brake circuit. According to the invention, the fluid control unit has, for each brake circuit, a sliding valve which is connected into a suction line between the recirculating pump and the main brake cylinder. The sliding valve restricts the effective pressure on a suction side of the recirculating pump to a predeterminable maximum pressure value. In this case, the sliding valve can be arranged in series with or parallel to the intake valve.

Abstract: The invention relates to a control valve for a vehicle brake system having a first fluid connection, a second fluid connection, and a decompressed connection toward the atmosphere. An adjustment spring applies a spring force to a control piston moving in longitudinal direction on the decompressed side, the control piston completely releasing a fluid connection between the first fluid connection and the second fluid connection in an initial position, and to a corresponding vehicle brake system having such a control valve. According to the invention the control valve includes a valve body having a seal seat and a sealing element coupled to a control piston. A sealing region of the sealing element interacts with the seal seat of the valve body in order to limit an effective pressure present on the second fluid connection to a predetermined maximum pressure value. The effective diameter of the control piston is greater than or equal to an effective diameter of the sealing element.

Abstract: The invention relates to a pump assembly for the synchronous pressurization of two fluid circuits. Two internal gear pumps are disposed together in a pump housing and rotationally driven by drive shafts thereof. Pinions of the pumps are located in an associated pump chamber and engage in an internal gear thereof. The pump chambers of the internal gear pumps are separated from each other by a common separating wall or partition, which is designed as a separate housing part and engages in a hollow cross-section of a housing part forming the circumferential wall of one of the internal gear pumps. Suction channels and pressure channels associated with the internal gear pumps transition into a radially extending longitudinal section in the pump housing following an axial longitudinal section in the lateral boundary wall of the associated pump chamber. According to the invention, a suction channel and a pressure channel of one of the internal gear pumps are integrated in the separating wall.

Abstract: The invention relates to a guide ring for an axially reciprocating pump piston, or for a pump rod of a piston pump. The invention provides for the guide ring to be configured as a radial damping element for damping radial impacts of the pump piston or of the pump rod. The invention further relates to a piston pump having such a guide ring.

Abstract: The invention relates to an internal gear pump for a brake system, in the pump housing of which an internally toothed ring gear and a pinion meshing with the toothing of the ring gear are pivotally supported about parallel axes. As a result the toothing thereof limits an approximately crescent-shaped tapering annular space, in which a filler piece supported toward the intake side of the pump is arranged. The circumferential sides of the filler piece are bent in accordance with the addendum circle of the ring gear toothing or of the pinion toothing. The sides rest against several tooth tips in a sealing manner under a spring force. According to the invention, one of the two circumferential sides of the filler piece is formed by a radially resilient circumferential wall, which is nestled against the tooth tips of the pinion or the ring gear due to the deflection based on the inherent spring force thereof.

Abstract: The invention relates to an internal gear pump for a braking system, in the pump housing of which an inner toothed hollow wheel and a gearwheel engaging in the toothing of the hollow wheel are mounted to rotate about parallel axes. The toothing thereof defines a tapering roughly crescent-shaped pump chamber, in which a filling piece is arranged supported along the length thereof. The circumferential surfaces of the filling piece closely correspond to the head diameter of the inner toothing of the hollow wheel or the gearwheel toothing and contact in a sealing manner with several tooth crowns covered thereby. A radial supporting force acts over a longitudinal range of the filling piece for improved sealing of a circumferential surface of the filling piece against the tooth crowns supporting the circumferential surface.

Abstract: The present invention relates to a piston pump for feeding a fluid, having a piston and a pressure chamber which is arranged between an inlet valve and an outlet valve. The inlet valve has a closing element, a spring element for restoring the closing element, and a holding device. The holding device has a holding region for holding and supporting the spring element and an integrally formed sealing region in order to seal the pressure chamber with respect to a low-pressure region of the piston pump. The sealing region is of annular design and has a parting gap which is closed in an installed state.

Abstract: A piston pump having a retaining device for retaining a spring element for restoring a closing element of a valve; the retaining device includes a receiving region for receiving and bracing the spring element and an integrally formed sealing region, in order to seal off a pressure chamber from a low-pressure region of the piston pump.

Abstract: The present invention relates to a piston pump for delivering hydraulic fluid, including a reciprocating piston for building up pressure in a pressure chamber; a sealing element is situated on the piston; during a compression phase, this sealing element produces a seal between the pressure chamber and a low-pressure region of the piston pump and during an intake phase, it opens a connection between the pressure chamber and the low-pressure region in order to draw hydraulic fluid into the pressure chamber.

Abstract: A piston pump for brake systems the region of the outlet valve is provided with a pressure chamber, an opposing chamber, and a flexible wall that divides the pressure chamber from the opposing chamber. The flexible wall has an elastically resilient diaphragm that is supported in an elastically flexible body.

Abstract: A piston pump for brake systems the region of the outlet valve is provided with a pressure chamber an opposing chamber, and a flexible wall that divides the pressure chamber from the opposing chamber. The flexible wall has an elastically resilient diaphragm that is supported in an elastically flexible body.