Abstract: The invention relates to a self-amplifying electromechanical disc brake, having a friction brake lining, which is able to move on a helical path and having a rack-and-pinion mechanism for moving the friction brake lining and for actuating the disc brake. According to the invention, a rack of the rack-and-pinion mechanism is connected to the friction brake lining in articulating fashion and in the region of a pinion, an abutting support keeps the rack engaged with the pinion, with play, thus permitting the rack to pivot in order to compensate for the helical movement of the friction brake lining.

Abstract: A brake system for a vehicle having a sensor device for providing a first and second sensor signal, a first and a second brake control device, which are directly connected to the sensor device and to provide a corresponding control signal for the first and/or second sensor signal, and a first and a second signal line for transmitting the control signal, the first signal line directly connecting the first brake control device to a first and second wheel actuator device and the second signal line directly connecting the second brake control device to a third and fourth wheel actuator device, the four wheel actuator devices exerting a braking torque corresponding to the control signal on the associated wheel, and the first wheel actuator device being directly connected to the second brake control device and/or the sensor device. A method for operating a brake system for a vehicle is also provided.

Abstract: A self-boosting electromechanical friction brake, having a friction brake lining which is displaceable for actuation in the direction of rotation of a brake disk and which is braced via roller bodies on ramps of an abutment plate. When the brake is actuated, brake disk exerts a frictional force on the brake lining pressed against it, which urges the lining in the direction of an increasingly narrow gap between the ramps and the brake disk to exert a contact pressure that is in addition to that exerted by an actuation device to attain self-boosting. The roller bodies are supported fixedly and rotatably in bearing block on the brake lining whereby the roller bodies move in slaved fashion with the brake lining and always brace the brake lining at the same points.

Abstract: The invention relates to an electromechanical brake booster for a master brake cylinder of a hydraulic vehicle braking system. The invention provides to configure the brake booster such that it preferably includes a switchable freewheel, which enables an actuation of the master brake cylinder without any movement of the electric motor of the brake booster. The invention further provides to configure the brake booster such that it includes a mechanical gear having a variable transmission ratio, which has a high path transmission at the beginning of an actuation of the master brake cylinder, and a force transmission that rises with increasing actuation. A variable gear ratio is possible using a rack and pinion gear, the toothed rack of which has a soothing with a pitch that changes across the length of the toothed rack. A further possibility of a mechanical gear having a variable ratio is a toggle lever mechanism.

Abstract: The invention relates to a disk brake with an electromechanical actuator which, for example, has a piezo-element, and with a hydraulic self-energizing device. In order to control the self-energizing effect, the invention provides a valve hydraulically between an auxiliary piston of the self-energizing device and a brake piston of the disk brake with which the brake piston can be hydraulically isolated from the auxiliary piston. This means that the self-energizing effect of the disk brake can be switched off. Using a modulated valve control and/or use of a proportional valve, the level of the self-energizing effect can be controlled or regulated. In order to avoid a blockage, the invention additionally provides a blockage protection valve with which the auxiliary piston or the brake piston can be connected to a hydraulic accumulator at ambient pressure.

Abstract: A vehicle roof with a roof opening disposed within a fixed roof outer skin of a vehicle and a cover (10) to optionally close and at least partially open the roof opening. To at least partially open the roof opening, the cover can be both tilted out from a closed position at its rear edge and displaced in the driving direction to the rear. The cover has at least one locking lug (12a, 12b) in the region of its leading edge (14) that engages, from below in a closed position of the cover, into a support element that is stiff in a direction perpendicular to the roof outer skin. Additionally, the cover is formed at its rear edge such that engagement from below under the lateral and rear areas of the roof opening does not occur in the closed position.

Abstract: A wireless telecommunications network may include parts that operate at different packet transfer delays, so that a mobile terminal undergoing handover from one node to another experiences different delays before and after handover. An additional delay is applied during the handover process to packets sent to the mobile terminal via the node at the smaller delay so as to reduce the difference between the two delays. The additional delay may be applied at an anchor node connecting parts of the wireless network of different radio access technology types or at other parts of the network. Information regarding packet transfer delays may stored and accessed to determine the delays for nodes involved in handover and/or obtained by measurements made during a call, for example.

Abstract: The invention proposes equipping a hydraulic vehicle brake system with a pedal travel modulator that has an electromechanically driven piston-cylinder unit. The piston-cylinder unit upon brake actuation “furnishes” additional brake fluid and thereby boosts a pedal travel of the vehicle brake system.

Abstract: A self-boosting electromagnetic disk brake having an electromechanical actuating device and a mechanical self-boosting device that has a wedge mechanism. A wedge is displaceable parallel to a brake disk and relative to a friction brake lining, and the relative displaceability of the wedge is limited relative to the friction brake lining to one direction, by means of a slaving device. The wedge is decoupled from the friction brake lining in one direction of rotation of the brake disk. As a result, the self-boosting device is operative in only one direction of rotation of the brake disk; in the reverse direction of rotation of the brake disk, the disk brake is neutral in terms of self-help.

Abstract: The invention relates to an electromechanically switchable form-locking freewheel mechanism for preventing an electromechanical brake from releasing. According to the invention, the freewheel mechanism is embodied in the form of an electric motor in which a pivot angle of the armature is limited, the armature is counterbalanced and has a locking element that cooperates with a gear. The invention permits a compactly designed freewheel mechanism that can be integrated into an electromechanical actuating unit of the electromechanical brake. The counterbalancing of the armature equipped with the locking element prevents external accelerations of the freewheel mechanism of the kind that can occur during driving operation of a motor vehicle from exerting a moment on the armature that could switch off the freewheel mechanism. A method for adjusting the clearance of an electromechanical brake is also provided.

Abstract: An electromechanically actuatable disk brake with a self-boosting device includes a wear readjusting device which can for instance be adjusted by means of an electric motor as an actuator, to compensate for wear of the friction brake lining.

Abstract: A method is provided of operation of a user terminal in a network for radio communications comprising a first radio access network and a second radio access network. The user terminal comprising a first radio, a second radio, a first antenna and a second antenna. The first radio comprises two ports for connection to antennas. At least one of the two antennas is switchably connectable to each of the radios.

Abstract: The invention relates to a method of optimizing measurement duration in a telecommunications network, said telecommunications network comprising a first base station connected to a first radio network, at least a second base station connected to a second radio network, a core network connected to said first and second radio network, a database coupled to said core network, said method comprising: sending a first beacon period information belonging to said first base station from said first base station to said database; sending at least a second beacon period information belonging to said second base station from said second base station to said database; storing at least said first and second beacon period information on said database; sending a request of said second beacon period information from said first base station to said database; generating a response of said second beacon period information belonging to said second base station from said database to said first base station; forwarding said respons

Abstract: A method and device for monitoring a distributed system made up of a plurality of users that are connected by one bus system are provided, in which distributed system at least a number of the users are provided as monitoring users. The process data of at least one monitored user are filed in data areas of memory units of the bus system, to which the monitoring users have access, and the process data are evaluated by the monitoring users.

Abstract: The invention concerns a method of performing a handover (1424) of a wireless packet-based connection between a user equipment (4) and a core network (3) from a source radio access network (1) with a first layer two technology to a target radio access network (2) with the same or a different layer two technology. In the user equipment (4) two radio interfaces (41, 42) are provided, one interface (41) serving as a source radio interface with the source radio access network (1) and the other interface (42) serving as a target radio interface with the target radio access network (2). A wireless connection (24) between the user equipment (4) and the target radio access network (2) is established before releasing a wireless connection (14) between the user equipment (4) and the source radio access network (1). The same IP address is configured on each of the two radio interfaces (41, 42) during the time period of parallel existence of the two wireless connections (14, 24).

Abstract: The invention relates to a self-boosting electromechanical disk brake with a frame caliper equipped with a wear readjustment device which for instance is automatic and which upon tensing of the disk brake stores energy by prestressing a torsion shaft, which upon release of the disk brake converts this energy into a wear readjustment motion. In the process, a spacing between two brake lining holders of the frame caliper in the disk brake is decreased.

Abstract: The present invention relates to a self-amplifying electromechanical partial lining disc brake, having a ramp mechanism as a self-amplification device. According to the invention, a rack for driving a friction brake pad is situated between roller elements of the ramp mechanism, particularly at a geometrical centroid of an imaginary surface defined by the roller elements. As a result a load is distributed to the roller elements in a more uniform fashion and the pressing force of the friction brake pad against a brake disc when the partial lining disc brake is actuated is distributed more uniformly and counteracts irregular pad wear.

Abstract: The invention relates to a drum brake having an electromechanical actuating device. The invention proposes to convert a rotating drive movement of the actuating device by use of a gearwheel and two toothed racks. The toothed racks mesh with the gearwheel on opposite sides thereof and are driven in opposite directions by the gearwheel into translational movements for pressing attached brake shoes against a brake drum. The toothed racks are configured in such a way that the two toothed racks have a common line of action, with resulting symmetrical actuating forces. According to one embodiment of the invention, the lines of action of the toothed racks run tangentially with respect to the gearwheel.

Abstract: The invention relates to a self-energizing electromechanical friction brake includes a self-energizing device provided with, for example, a wedge mechanism. According to the invention, the friction brake is equipped with a linear drive, for example an electromagnet, for brake actuation. The self-energizing device converts a friction force exerted by a rotating brake body on a friction brake lining during braking actuated by the linear drive of an actuation device into a second contact pressure that presses the friction brake lining against the brake body in addition to the first contact pressure exerted by the actuation device. The self-energizing device provides a non-proportional characteristic magnetic force curve of the electromagnet of the linear drive.

Abstract: The invention relates to a selective freewheeling mechanism for developing an electromechanical vehicle brake (service brake) into a parking brake. The freewheeling mechanism according to the invention has an outer ring and a locking element cage which are configured as an electric motor with a rotor and a stator. The rotor and stator can be swiveled in relation to each other when a coil is supplied with current. Due to a symmetric design, the freewheeling mechanism is advantageously insensitive to acceleration forces.