Patent application number | Description | Published |
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 |
20120036996 | Piston Pumps for a Hydraulic Vehicle Brake System - A piston pump as a recirculating pump of a hydraulic traction control vehicle brake system is disclosed, with two pump pistons which are arranged in an opposed arrangement and bear on the outside against an eccentric bearing ring for their lifting drive. The pump pistons are arranged with an offset in the longitudinal direction of a pump shaft, so that they exert a moment upon the bearing ring, which moment presses rolling bodies in the rolling bearing against the pump shaft even when the forces with which the pump pistons press from outside against the bearing ring cancel one another. The rolling bodies roll even when the forces of the pump pistons are compensated. | 02-16-2012 |
20120070324 | Pump Assembly - A pump assembly as a feedback pump of a hydraulic, slip-controlled vehicle brake system having a piston pump and an electric motor for driving it is disclosed. The electric motor is embodied as an external rotor and the stator is mounted on a printed circuit board which has an electronic system for commutating the electric motor and/or for performing slip control of the vehicle brake system. | 03-22-2012 |
20130160883 | HYDRAULICALLY CONTROLLED ACCUMULATOR-CHAMBER VALVE - A hydraulically controlled accumulator-chamber valve has a closing element and a tappet. The closing element is prestressed via a first compression spring and seals a valve seat in a valve body. The tappet reaches through a leadthrough in the valve body and is moved by an accumulator piston. The accumulator piston is loaded by a second compression spring. The tappet is moved to press the closing element out of the valve seat when there is a specified balance of forces between the spring prestressing forces and a hydraulically active force. The closing element and the tappet are configured as a single-piece component, in order to guide the tappet in the leadthrough in a longitudinally movable manner. The tappet bears against an end face of the accumulator piston during an opening movement. | 06-27-2013 |
20130195390 | Eccentric Bearing - An eccentric bearing for an electrohydraulic piston pump assembly of a vehicle brake system includes a shaft configured to be driven in rotation about its axis, a bearing ring which is eccentric relative to the shaft, and rolling bodies between the bearing ring and the shaft. The rolling bodies have different diameters corresponding to a varying width of a gap between the bearing ring and the shaft. When the shaft is driven in rotation, an eccentricity of the bearing ring revolves around the shaft at half of the rotational speed of the shaft and drives pump pistons to perform a reciprocating movement. A rolling body cage is open between the two largest rolling bodies. The rolling body cage loads the rolling bodies into the tapering gap and ensures that the rolling bodies revolve on the shaft when the shaft is driven. | 08-01-2013 |
20130199319 | Eccentric Bearing - An eccentric bearing for an electrohydraulic piston pump assembly of a vehicle brake system includes a shaft configured to be driven in rotation about its axis, a bearing ring eccentric relative to the shaft, and rolling bodies between the bearing ring and the shaft. The rolling bodies have different diameters corresponding to a varying width of a gap between the bearing ring and the shaft. When the shaft is driven in rotation, an eccentricity of the bearing ring circulates around the shaft at half of the rotational speed of the shaft and drives pump pistons, which bear against the bearing ring, to perform a reciprocating movement. A resiliently elastic, closed annular steel band surrounds the rolling bodies and loads the rolling bodies inwardly against a circumference of the shaft. The steel band ensures that the rolling bodies roll on the shaft when the shaft is driven in rotation. | 08-08-2013 |
20130199320 | Eccentric Bearing - An eccentric bearing for an electrohydraulic piston-pump assembly of a vehicle brake system includes a shaft configured to be driven rotationally about its axis, a bearing ring eccentric relative to the shaft, and, in a gap between the bearing ring and shaft, rolling bodies with different diameters according to a differing width of the gap. When the shaft is rotationally driven, an eccentricity of the bearing ring circulates the shaft more slowly than the rotational speed of the shaft and drives a reciprocating movement of pump pistons which bear against the bearing ring. To ensure that the rolling bodies roll on and circulate the shaft, a radial elasticity loads the rolling bodies with prestress against the shaft and bearing ring. The prestress is caused by an undersize of the bearing ring or by an elastic ring on the shaft, on at least one rolling body or in the bearing ring. | 08-08-2013 |
20130205940 | Eccentric Bearing - An eccentric bearing for an electrohydraulic piston pump assembly of a vehicle brake system includes a shaft which can be driven in rotation about its axis, a bearing ring which is eccentric relative to the shaft, and rolling bodies arranged between the bearing ring and the shaft. The rolling bodies have different diameters corresponding to a varying width of a gap between the bearing ring and the shaft. When the shaft is driven in rotation, an eccentricity of the bearing ring circulates around the shaft at half of the rotational speed of the shaft and drives pump pistons. The pump pistons bear at the outside against the bearing ring so as to perform a reciprocating movement. | 08-15-2013 |
20130224046 | DEVICE FOR THROTTLING A FLUID FLOW, AND CORRESPONDING PISTON PUMP FOR DELIVERING FLUIDS - A device for throttling a fluid flow includes a basic body which has at least one throttle point with a predefinable opening cross section. The basic body has a resilient configuration at least in a region of the at least one throttle point. Accordingly, the opening cross section of the at least one throttle point is configured to be set in a variable manner as a function of a pressure difference. | 08-29-2013 |
20130287609 | ARRANGEMENT FOR THROTTLING A FLUID FLOW, AND CORRESPONDING PISTON PUMP FOR DELIVERING FLUIDS - An arrangement for throttling a fluid flow includes a throttle element arranged so as to influence a flow cross section in a fluid duct. The throttle element has a resiliently elastic disc-shaped basic body which is arranged with a top side and a bottom side between at least two supports in the fluid duct. The body is arranged in such a way that the flow cross section can be variably adjusted as a function of a pressure difference between the top side and the bottom side of the resiliently elastic disc-shaped basic body. At least one support bears against the top side of the resiliently elastic disc-shaped basic body, and at least one support bears against the bottom side of the resiliently elastic disc-shaped basic body. | 10-31-2013 |
20140004993 | Frictional Transmission, in particular for a Hydraulic Unit in a Vehicle Brake System | 01-02-2014 |
20140030125 | SPRING ELEMENT AND CORRESPONDING PISTON PUMP FOR DELIVERING FLUIDS - A spring element includes a disc-shaped basic body, in which at least one spring bridge is inserted. The basic body has at least one dynamic throttle point to throttle a fluid flow. The basic body has a resilient configuration in a region of the at least one throttle point. Accordingly, an opening cross section of the at least one throttle point is configured to be set variably depending on a pressure difference. | 01-30-2014 |