| Patent application number | Description | Published |
|---|
| 20080307955 | Piston Pump With Compact Retention Device for a Restoring Spring - 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. | 12-18-2008 |
| 20080310979 | Piston Pump With Improved Efficiency - 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. | 12-18-2008 |
| 20090158924 | PISTON PUMP - 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. | 06-25-2009 |
| 20100233005 | INTERNAL GEAR PUMP FOR A BRAKE SYSTEM - 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. According to the invention, a loose fit is provided between the circumferential surfaces of the filling piece and the opposing tooth crowns of the hollow wheel and gearwheel and the play acting on the filling piece is partly eliminated by support forces acting in opposing radial directions which act on the filling piece at a distance from each other. | 09-16-2010 |
| 20100247363 | INTERNAL GEAR PUMP FOR A BRAKE SYSTEM - 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. | 09-30-2010 |
| 20100266427 | GUIDE RING FOR A PISTON PUMP, AND PISTON PUMP - 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. | 10-21-2010 |
| 20100322810 | PUMP ASSEMBLY FOR SYNCHRONOUS PRESSURIZATION OF TWO FLUID CIRCUITS - 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. | 12-23-2010 |
| 20110101772 | CONTROL VALVE FOR A VEHICLE BRAKE SYSTEM, AND VEHICLE BRAKE SYSEM HAVING SUCH A CONTROL VALVE - 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. | 05-05-2011 |
| 20110109152 | BRAKE SYSTEM FOR A VEHICLE - 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. | 05-12-2011 |
| 20110147624 | MAGNET VALVE WITH A VALVE HOUSING - 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. | 06-23-2011 |
| 20110233873 | Seal Arrangement - 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. | 09-29-2011 |
| 20120244028 | Internal Gear Pump for a Hydraulic Vehicle Braking System - 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. | 09-27-2012 |
| 20120315175 | Double Internal Gear Pump - 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. | 12-13-2012 |
| 20130121861 | Piston Pump - 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. | 05-16-2013 |
| 20130309120 | DOUBLE INTERNAL GEAR WHEEL PUMP - A double internal gear wheel pump includes two internal gear wheel pumps configured as hydraulic pumps of a hydraulic, slip-controlled vehicle braking system. The double internal gear wheel pump further includes a partition wall that is arranged between both internal gear wheel pumps. The partition wall is configured as a single-piece component of a pump housing, preferably formed by a hydraulic block of the vehicle braking system. | 11-21-2013 |
| 20130330223 | INTERNAL GEAR PUMP - An internal gear pump includes a ring gear and a pinion configured to mesh with the ring gear. The ring gear and pinion delimit a pump chamber extending from a suction region to a pressure region. The internal gear pump also includes an axial disk arranged on front faces of the ring gear and the pinion and includes a lubricant feed from the suction region between the axial disk and the ring gear and pinion. The lubricant feed includes a lubricant channel which passes through the axial disk. A wedge gap is delimited between the axial disk and the ring gear and pinion. The wedge gap communicates with the suction region and, when the ring gear and the pinion are driven in rotation, a lubricating film forms between the axial disk and the ring gear and pinion. | 12-12-2013 |
| 20140010696 | Axial Disc and Gear Pump with Axial Disc - An internal gear pump for a hydraulic vehicle brake system has axial discs which, by the exertion of pressure on the outer sides thereof, are pressed against gearwheels of the internal gear pump for lateral sealing, provided on the inner sides thereof with grooves through which the gearwheels convey brake fluid as they are driven in rotation, which brake fluid thereby passes, for lubrication, between the axial discs and the gearwheels of the internal gear pump. | 01-09-2014 |
| 20140030131 | INTERNAL GEAR PUMPS FOR A HYDRAULIC VEHICLE BRAKING SYSTEM - An internal gear pump for a slip-controlled hydraulic vehicle braking system includes a pinion, a ring gear, and a filler piece (sickle). The filler piece has an inner part extending in a curved manner in the peripheral direction and an outer part extending in a curved manner in the peripheral direction. The inner part and the outer part are interconnected in a hinged manner on the suction-sided ends. A leg spring is arranged between the inner and outer parts and is configured to separate the inner and outer parts and press against the tops of the teeth of the pinion and the tops of the teeth of the ring gear of the internal gear pump. | 01-30-2014 |
| 20140048732 | MAGNETIC VALVE DEVICE - A magnetic valve device includes a valve receiving device and a valve insert of a magnetic valve which is received in the valve receiving device. A high pressure resistance is obtained in one of the modes of embodiment. The magnetic valve device includes either a pressure mechanism configured to press the valve insert against the valve receiving element or a sealing element arranged in a notch in the valve insert or a sealing element arranged between an axial filter and the valve insert. | 02-20-2014 |
| 20140119973 | INTERNAL GEAR PUMP - An internal gear pump is a return feed pump for a hydraulic vehicle braking system. The internal gear pump includes a filling part formed by two flexible sheet metal parts connected by an axial sealing element that is vulcanized in place and, in side view, is U-shaped. The axial sealing element is configured to improve the efficiency of the internal gear pump and allows large production tolerances. | 05-01-2014 |
| 20140255236 | INTERNAL GEAR PUMP - An internal gear pump for a hydraulic vehicle brake system includes a bearing formed for a pump shaft in a tubular form. The bearing is integrally formed with a housing of the internal gear pump. The bearing is configured to mount a pinion of the internal gear pump rotatably on the bearing. The internal gear pump also includes a catch configured to connect the pinion to the pump shaft for conjoint rotation. | 09-11-2014 |
| 20140271311 | Internal Gear Pump - An internal gear pump includes a pinion and an annulus as a return pump in a hydraulic vehicle brake system. The internal gear pump further includes an axial disk and an intermediate piece. The intermediate piece is configured to be acted upon by an outlet pressure of the internal gear pump and press the axial disk against a side face of the pinion and of the annulus. | 09-18-2014 |
| 20140318910 | BRAKE SYSTEM FOR A VEHICLE AND METHOD FOR OPERATING A BRAKE SYSTEM OF A VEHICLE - A brake system is described for a vehicle having a master brake cylinder that is hydraulically connected to at least one wheel brake caliper, and having a fluid conveyor device by which brake fluid can be transferred into the at least one wheel brake caliper and out of the at least one wheel brake caliper, the fluid conveyor device including a pump motor that is controllable in two directions of rotation, the motor being capable of being controlled in such a way that brake fluid can optionally be pumped by the fluid conveyor device either out of a fluid storage device into the at least one wheel brake caliper or out of the at least one wheel brake caliper into the fluid storage device. In addition, also described is a method for operating a brake system of a vehicle. | 10-30-2014 |
| 20140327297 | BRAKE SYSTEM FOR A VEHICLE AND METHOD FOR OPERATING A BRAKE SYSTEM OF A VEHICLE - A brake system for a vehicle, including a brake master cylinder that is hydraulically connected to at least one wheel brake caliper; and a fluid delivery device by which brake fluid is transferable into the at least one wheel brake caliper, the fluid delivery device being embodied as a substantially uniformly delivering pump device by which brake fluid is pumpable out of a fluid reservoir device into the at least one wheel brake caliper. The fluid delivery device can be, a gear pump or a phase-shifted multi-piston pump. A method for operating a brake system of a vehicle is also described. | 11-06-2014 |
| 20140345720 | Hydraulic Block for a Slip-Controlled Vehicle Brake System - A hydraulic block for a slip-controlled vehicle brake system has a plurality of receptacles configured to receive hydraulic components, such as solenoid valves, hydraulic accumulators, hydraulic pumps, and gear pumps, and includes connectors for external components of the vehicle brake system, and facilitates a flat hydraulic block. | 11-27-2014 |
| 20140377114 | Internal Gear Pump - An internal gear pump for a hydraulic vehicle brake system comprises a pump shaft, a pinion positioned on the pump shaft, an annulus configured to mesh with the pinion, a shaft bearing positioned on one side of the pinion, and an axial disk. The pinion is configured to conjointly rotate with the pump shaft. The pump shaft is rotatable mounted in the shaft bearing. The axial disk is positioned between the shaft bearing on one end side, and the pinion and the annulus on an opposite end side, and bears sealingly against the pinion and the annulus. The shaft bearing is configured to center the axial disk. | 12-25-2014 |
| 20140377115 | Internal Gear Pump - An internal gear pump comprises an internal gear, a pinion eccentrically positioned in the internal gear and configured to mesh with the internal gear, a cover configured to close an installation space of the internal gear pump, and positioned on end sides of the pinion and the internal gear, a pump outlet leading through the cover, and a non-return valve positioned in the pump outlet in the cover and configured to open to allow flow out of the internal gear pump, and further configured to shut to disallow a return flow through the pump outlet into the internal gear pump. | 12-25-2014 |
