Abstract: A ball screw is provided having a ball roller screw (1) and a screw nut (2) arranged thereon, whereby the balls (3) are arranged to endlessly circulate in a ball channel (6) defined by ball tracks (4, 5) on the ball roller screw (1) and the screw nut (2). The ball channel (6) includes a load section (7) wound about the ball roller screw (1), the beginning and end of which are endlessly connected by a load-free return section (8). A minimum of two and a maximum of four balls (3) are housed in a common ball cage (10, 22), the cage pockets (11) of which each house one of the balls (3), whereby the ball cage (10, 22) includes discs (12, 15) at the axial ends thereof and between adjacent balls (3), that engage the ball channels (4, 5), and provided on the sides thereof facing the balls (3) with a concave receptacle (14) for the balls (3).

Abstract: A spindle nut for a ball screw is provided, having a continuous ball track (1) for balls (2), a ball groove (3,14) for the balls (2) extending on an inner periphery of the spindle nut about the rotational axis thereof and along a helical line, the ball groove extending across at least one thread (4), and a diversion device (5), in order to divert with its diverting channel (9) balls (2) from one end of the thread (4) to the beginning of the thread (4). The spindle nut is provided with ball inlets (13, 16), on the one side connected to the ball groove (3, 14) and, on the other side connected to the diverting channel (9), with the ball groove (3, 14) and the ball inlet (13, 16) both having identical cross-sectional profiles.

Abstract: A vehicle roll stabilizer for the chassis of a motor vehicle is provided, with its actuator (3, 38) being energized with independent energy, as necessary, for counteracting a roll. The actuator (3, 38) is provided with at least one additional energy accumulator (33a, 57), with its stored energy additionally counteracting the roll.

Abstract: A tensioner for a traction member, in particular a belt of a traction drive for an internal combustion engine, includes a base constructed for rotation about a rotation axis and having a pivot arm. The pivot arm has a free end for connection of a rotatable tension roller which bears against a traction member. A spring member urges the pivot arm to seek a forced engagement of the tension roller upon the traction member. Disposed between the base and the pivot arm is a damping element for damping an adjusting movement of the pivot arm. A pivot bearing supporting one portion of the base on a machine part for rotation about the rotation axis, whereby the rotation of the base in relation to the machine part is realized by an actuator to thereby adjust a biasing force of the traction member.

Abstract: In a ball screw drive comprising a spindle nut (2) that can be disposed on a spindle (1), said spindle nut (2) comprising on an inner periphery, a ball groove (3) that is arranged along a helix and defines a load-bearing channel (6) for balls (5), an external deflector (7) comprising a return channel (8) for the balls (5) being arranged on an outer periphery of the spindle nut (2), said external deflector (7) comprising two ball openings (E1, E2), each of which is connected to an end of the load-bearing channel (6) to deflect the balls (5) from one end of the load-bearing channel (6) to the other end of the load-bearing channel (6), the external deflector (7) extends from one of the two ball openings (E1) to the other of the two ball openings (E2) at least approximately over one full winding about an axis of rotation of the spindle nut (2).

Abstract: A device for modifying the wheel camber of a wheel (1) on a motor vehicle is provided, in which the heel (1) is pivotally mounted to a wheel carrier (5, 51) by a pivot bearing (4, 50). A pivoting plane is defined by the pivot bearing (4, 50) which extends in an approximately transverse manner to a central plane (E) of the wheel, the position of a virtual center of rotation (D) of the pivot bearing (4, 50) lying above the wheel contact plane and on a side of the central plane (E) of the wheel that faces toward the vehicle.

Abstract: The friction clutch between the prime mover and the change-speed transmission in the power train of a motor vehicle is actuatable by a slave cylinder cooperating with a master cylinder wherein the piston is movable by a clutch pedal or by an electric actuator. The casing of the slave cylinder is made, at least in part, of a plastic material and defines a plenum chamber arranged to receive pressurized fluid from the master cylinder by way of a conduit extending through a bell which contains the clutch and the slave cylinder. The annular piston of the slave cylinder surrounds the input shaft of the transmission. The plastic material of the casing of the slave cylinder can contain one or more additives which enhance its strength and/or influence its frictional engagement with the adjacent surfaces of the piston or of a lip seal which reciprocates with the piston.

Abstract: The invention relates to a roll stabilizer for the chassis of a motor vehicle, comprising an actuator (3), which is mounted between anti-roll bar halves (1, 2) and which rotates these about a rotation axis in opposite directions as necessary. The curved path carriers (4, 5) of the actuator that are assigned to the roll stabilizer halves (1, 2) are each provided with a curved path (17, 18) inside of which a coupling element (13) is guided that can be displaced along these curved paths (17, 18) via an actuating drive (7, 10). The U-shaped or V-shaped curved path (18) of one curved path carrier (5) has two curved path branches (19, 20) that are arranged in a mirror symmetric manner in relation to a longitudinal central plane containing the rotation axis of the actuator (3).

Abstract: Ball screw having a spindle nut (2) arranged on a spindle (1), together with balls (3) which are arranged in a series and are capable of rolling in a helical ball track (4), the helical ball track (4) being defined by a thread groove (5) formed on the spindle (1) and by a thread groove (6) formed on the spindle nut (2), the balls (3) arranged in a series being returned in a return duct (7) from an outlet end to an inlet end of the helical ball track (4), the divided circle end play of the series of balls being less than or equal to 0.3 millimeters or the ratio between the pitch of the helical ball track (4) and the diameter of the balls (3) ranging from 1.02 to 1.2 or the thread grooves (5, 6) of the spindle nut (2) and of the spindle (1) in each case having a gothic profile (8, 9), a pressure angle formed by the balls (3) in contact with the gothic profile (8, 9) ranging from 15 to 35 degrees.

Abstract: The invention relates to a machine element which is provided, at least over part of its axial length, with first toothing (2.1) in the form of threads, running on its cylindrical lateral surface, for a threaded drive. This is distinguished in that the threads are produced by means of a continuous shape rolling process in the axial direction, as is known per se, the continuous shape rolling process being used in a partially continuous manner corresponding to the desired axial extent of the threads.

Abstract: The friction clutch between the prime mover and the change-speed transmission in the power train of a motor vehicle is actuatable by a slave cylinder cooperating with a master cylinder wherein the piston is movable by a clutch pedal or by an electric actuator. The casing of the slave cylinder is made, at least in part, of a plastic material and defines a plenum chamber arranged to receive pressurized fluid from the master cylinder by way of a conduit extending through a bell which contains the clutch and the slave cylinder. The annular piston of the slave cylinder surrounds the input shaft of the transmission. The plastic material of the casing of the slave cylinder can contain one or more additives which enhance its strength and/or influence its frictional engagement with the adjacent surfaces of the piston or of a lip seal which reciprocates with the piston.

Abstract: The present invention relates to a method for the determination of the CaCO3, content of a scrubbing liquid, which has been separated from a scrubbing liquid circuit of a scrubbing column.

Abstract: Method for the production of a spindle nut (3) of a spherical thread drive mechanism, whereby the spindle nut (3) has at least one screw-shaped track (4) formed as a single piece on its inner circumference, whose threads (38) are limited by shoulders (6). The shoulder (6) is interrupted by a deflecting recess (23) at at least one deflecting position, in order to deflect balls (13) out of one thread into an adjacent thread (38). The method includes locating a tool arbor (56) in a hollow blank (57), whereby the tool arbor (56) has on its outer circumference a counter profile of the screw-shaped track (4) and a projecting part (59) for each deflecting recess.

Abstract: Roll stabilizer for the chassis of a motor vehicle having an actuator (3) arranged between stabilizer halves (1, 2) and rotating them relative to one another around a rotational axis, when necessary. The actuator (3) is provided with a failsafe device (34), which connects the two stabilizer halves (1, 2) in a torque proof manner, when necessary.

Abstract: An actuator for a parking brake of a motor vehicle is provided, which includes an electric motor (1) whose rotor (20 has a threaded spindle (3) on which a spindle nut (4) is located. Between the threaded spindle (3) and the spindle nut (4), rolling bodies are in rolling engagement with threaded paths (6, 7) formed on the spindle nut (4) and on the threaded spindle (3). A cable pull (8) for actuating a brake acts upon the spindle nut (4).

Abstract: Ball screw, having a spindle nut (2) which may be provided on a recirculating ball screw (1) and on the inner circumference of which turns (3) of ball grooves (4), helically wound around an axis, are provided in which balls (5) can roll, at least one return element (8), arranged on the outer circumference of the spindle nut (2) and provided with a return duct (9) for the balls (5), at its two ends connecting a start of a turn (3) to an end of a turn (3) in order to permit a continuous recirculation of the balls (5), the return element (8) between its two ends being supported on a support (15, 21), the return element (8) being resiliently supported by means of at least one spring element (14) on the support (15, 21).

Abstract: Ball screw mechanism, with a spindle nut (1) which is arranged rotatably on a ball-rolling spindle (2) and between which and the ball-rolling spindle (2) balls (3) roll on ball grooves (4, 5), and with a driving wheel (20, 26), connected fixedly in terms of rotation to the spindle nut (1), for driving the spindle nut (1), the spindle nut (1) being capable of being mounted on a housing (8) by means of a bearing, in particular a rolling bearing (7), the bearing having an outer ring (9, 23) capable of being fixed to the housing (8), the outer ring (9, 23) having a ring (15, 29) surrounding the spindle nut (1), and with a bearing running surface (10, 11) formed on the inner circumference of said ring, and a radial flange (16, 28) adjoining the ring (15, 29), the radial flange (16, 28) being capable of being fixed to the housing (8).

Abstract: A ball screw drive comprising a spindle nut (2) that can be disposed on a spindle (1), said spindle nut (2) comprising on an inner periphery, a ball groove (3) that is arranged along a helix and defines a load-bearing channel (8) for balls (5), an external deflector (6, 24) arranged outside of the spindle nut (2) connecting the two ends of the load-bearing channel (8) endlessly to each other for deflecting the balls (5) from one of the two ends of the load-bearing channel (8) to the other of the two ends of the load-bearing channel (8), a drive pinion for driving the spindle nut (2) being arranged on the spindle nut (2), wherein the external deflector (6, 24) is arranged at least substantially within an axial length of the drive pinion.

Abstract: In a ball screw drive comprising a spindle nut (2) that can be disposed on a spindle (1), said spindle nut (2) comprising on an inner periphery, a ball groove (3) that is arranged along a helix and defines a load-bearing channel (6) for balls (5), an external deflector (7) comprising a return channel (8) for the balls (5) being arranged on an outer periphery of the spindle nut (2), said external deflector (7) comprising two ball openings (E1, E2), each of which is connected to an end of the load-bearing channel (6) to deflect the balls (5) from one end of the load-bearing channel (6) to the other end of the load-bearing channel (6), the external deflector (7) extends from one of the two ball openings (E1) to the other of the two ball openings (E2) at least approximately over one full winding about an axis of rotation of the spindle nut (2).

Abstract: A gear rack for a rack-and-pinion steering system for a motor vehicle is distinguished in that the bearing surface is configured as a recess situated within the circular gear rack. These bearing surfaces being are borne against by roller-mounted guide rollers with corresponding bearing surfaces.