Abstract: A pressure fluid accumulator with a housing having its interior subdivided by a media-separating element into two chambers, the first chamber being filled with a gas and the second chamber being filled with a liquid, and wherein in a hydraulic port a bottom valve is provided which permits filling the second chamber with liquid and prevents complete evacuation of the second chamber, and the valve's closure member is operable by the media-separating element. In order to prevent, especially at low temperatures and high viscosity of the pressure fluid, damage of the media-separating element caused by a high differential pressure, a device is provided between the media-separating element and the bottom valve.

Abstract: An electric-motor-and-pump assembly includes at least one bearing (7) for a mounting support of a motor shaft (6) in a motor housing (3), and a pump (14), which is adapted to be attached to the motor (2) and has at least one roller bearing (28) for a mounting support of a pump shaft (16) in a pump housing (15). The two shafts (6, 16) are interconnected by way of a force-lockingly operative transmission element (17).

Abstract: To prevent difficulties in a brake system which is appropriate for automatic braking operations when the viscosity of the pressure fluid is high at low temperatures, a precharging pump for the pressure fluid supply during automatic braking is located so that it aspirates pressure fluid from the supply reservoir and delivers it into the brake line at a junction point as far from the master cylinder as possible. This junction point should be as close as possible to the suction side of the return pump. The large distance between the master cylinder and the point where the pressure line opens into the brake line makes it unnecessary to provide additional throttle elements in the brake line in order to reliably prevent pressure fluid from discharging into the supply reservoir. Only when the change-over valve on the suction side of the return pump is closed after an automatic braking operation has ended will it be necessary to reduce the residual pressure because the precharging pump continues running.

Abstract: An accumulator loading valve is provided which is adapted for elevated pressures, which requires but little space, and which has a pump connection (1), a reservoir connection (20), a priority valve (7) between the consumer connection and the accumulator connection, and a pilot valve (4) being controlled by the accumulator pressure. The improvement is that the operating piston of the two-position pilot valve (4) is prestressed by a spring (28) having a constant spring rate and that the cross section of the valve inlet (19) is smaller than the cross section of the valve discharge (20).

Abstract: Disclosed is an anti-lock brake system of the type wherein the pressure applied on the wheel brakes can be decreased by discharging pressure fluid by way of a return line wherein the brake system includes a pump whose suction chamber communicates through a suction line with a reservoir and a return line is connected to the suction chamber.

Abstract: An anti-lock hydraulic brake system comprising a separating valve (14) and a regulating valve (19). A combined arrangement is provided wherein the valves are connected into each other. The movability (play s) of the piston (30) affords the event that a compensating volume for the control action in the event that the output of the pump is insufficient in specific situations requiring a large amount of fluid for control.

Abstract: A slip-controlled hydraulic brake system with improved operational reliability during the slip control phase of operation has a master cylinder having shortened overall axial length. The master cylinder includes a valve-opening mechanism of one central control valve supported on the bottom of the longitudinal bore of the master cylinder, and the valve-opening mechanism of another central control valve supported on the secondary piston wherein during a slip control action, in the presence of a predetermined travel of the pistons of the master cylinder, a force component is generated that increases the reliability of the opening of the central control valves.