Abstract: A brake actuating apparatus includes a force transmission element operable to transmit a brake actuating force and an abutment member moveable to abut the force transmission element. A piezo-electric device operable on expansion applies a force between the abutment member and the force transmission element to move the force transmission element in a direction of brake actuation. A support member moveable independently of the abutment member supports the force transmission element in the new position following expansion of the piezo-electric device.

Abstract: A disc brake for a heavy road vehicle has a caliper arranged at a brake disc mounted on a wheel axle of the vehicle. An electric motor and two thrust rods operationally connected thereto are provided in the caliper. The thrust rods transform a rotational ingoing movement from the motor into a linear outgoing movement for transmission to a disc brake pad, intended for braking engagement with the brake disc.

Abstract: A brake assembly has a caliper with a first brake pad and a second brake pad. The first brake pad is moveable relative to the caliper. A brake actuator moves the first brake pad and has a first threaded member and a second threaded member. The first threaded member has first thread characteristics for moving the brake actuator at a first speed and a first force. The second threaded member has a second thread characteristics for moving the brake actuator at a second speed and a second force. The first speed is greater than the second speed while the first force is lower than the second force.

Abstract: The invention relates to a control method for controlling a resetting system of a disc brake provided with a brake caliper, involving the following steps: 1. in order to determine the actual play of the disc brake, the brake disc is displaced back and forth with the resetting devices located on each side of the brake disc between two axial stops that delimit the displacement path of the brake disc, and the covered actual displacement path is determined; 2. the actual play is calculated and adjusted based on a comparison of the actual displacement path with a pre-stored displacement path calibration value and with a set play. The invention also relates to a brake disc assembly provided with a brake disc that, when mounted on the cams of the hub, can be displaced between stops.

Abstract: A screw actuator comprises a housing (1), a screw mechanism (4) with a nut (6) and a screw (5), as well as a motor (7) which is drivingly connected to the screw. The screw (6) is rotatably and translatably supported with respect to the nut (5), which is fixed with respect to the housing (1). The screw engages a translatable, non rotatable actuating head (29) through a swivel connection. The swivel connection comprises a pair of conformed surfaces (41, 42) having a common rotational axis of symmetry which is aligned with the axis of the screw mechanism.

Abstract: To provide an electrically powered brake system capable of performing a control of the braking force appropriate to a particular wheel rotational speed with high response and capable of being simplified in structure with no need to employ any hydraulic equipment and the related pipe lines, the electrically powered brake system includes an actuating unit 18 including a brake wheel 16 mounted on a vehicle wheel 1 and brake pieces 17 frictionally engageable with the brake wheel 16. A drive unit 19 is operable to translate a rotary output of an electric drive motor 20 into a rectilinear reciprocating motion by means of a ball screw mechanism 23, which rectilinear reciprocating motion is transmitted to the brake pieces 17 as a braking force. An operating unit 32 is operable to control the electric drive motor 20 according to manipulation of an operating member 31 such as, for example, a brake pedal.

Abstract: A force transmission device for a disc brake is operable to move a friction element of the brake into engagement with a rotary brake disc along a first axis in response to a loading from a thrust member. The device is restrained from movement transverse to the first axis near a first end engageable with the thrust member, but is unguided near a second end engageable with the friction element.

Abstract: A disc brake assembly has a hub that is rotatable about an axis and at least a pair of discs supported on the hub for relative axial movement along the axis of the hub with the discs having opposite sides presenting braking surfaces. A non-rotatable support structure supports a plurality of friction elements for relative axial movement into and out of frictional braking engagement with the braking surfaces of the discs. An electric actuator is mounted on the support structure adjacent at least one of the friction elements and is operative when actuated to move the friction elements into frictional braking engagement with the braking surfaces of the discs.

Abstract: A mechanically and hydraulically actuated brake cylinder for a motor vehicle having a body with a chamber for receiving an axially movable piston (4) that is connected to a pivoting shaft (11) that has a part that is located outside of the body. Pressurized fluid is presented to the chamber to hydraulically actuate a brake application while a rotational torque is applied to the shaft (11) to mechanical actuate a brake application through a ball-ramp mechanism that converts the rotational torque into translational movement for the piston. The ball-ramp mechanism is defined by a rotary plate (28) fixed to the shaft (11) with a first ramp ribs (31), second ramp ribs (32) on the piston (4) and balls (33) housed in the ramp ribs.

Abstract: The invention relates to a friction brake (10) for a motor vehicle. The friction brake (10) for instance has a disk brake (12), which is actuatable by means of an actuating device, for instance in the form of a ball thread drive (22). The invention proposes embodying the friction brake (10) with a band brake (34), whose band (36) is mounted on the circumference of a nut (26) of the ball thread drive (22). If the brake band (36) is put under tensile stress in order to actuate the band brake (34), then the brake band (36) rotates the nut (26) of the ball thread drive (22) in a tensing direction and in this way actuates the disk brake (12). The invention has the advantage that the friction brake (10) has high brake boosting and therefore requires only little actuating energy. It is accordingly suitable for embodiment as an electromechanical friction brake (10) with an electric motor (56) for its actuation.

Abstract: A motor-driven disk brake having a caliper containing a piston for pressing a brake pad, a rotary actuator and a rotary-to-rectilinear motion converting mechanism for transmitting rotation of the rotary actuator to the piston after converting it into rectilinear motion. The piston is driven in response to rotation of the rotary actuator to press the brake pad against a disk rotor, thereby generating braking force. A brake releasing mechanism for returning the rotary-to-rectilinear motion converting mechanism to its initial position in the event of a failure in the rotary actuator is interposed between a rotating member and a rectilinearly moving member that constitute the rotary-to-rectilinear motion converting mechanism. The brake releasing mechanism has an urging device for generating a torque in the direction for returning the piston in response to the rotation of the rotating member in the direction for advancing the piston.

Abstract: A slack adjustment system for a disk brake includes a biasing member to adjust slack in a brake system. The biasing member operates independently of pressure applied to a brake actuator. A locking device secures the adjustment mechanism in place when adjustment is not necessary. Release of the locking member allows the biasing member to adjust the resting position of brake pads independent of driver applied brake pressure.

Abstract: An electromechanical multiple-disk brake actuator is provided. The actuator includes a first reversible assembly with a central screw, a first electric motor rotating the screw, a first nut displaceable over the screw when the screw is rotated and a connection between the screw and the nut permit reversible displacement. The actuator also has a second non-reversible assembly including an annular screw on the first nut, a second electric motor for rotating the annular screw and the first nut, and a second nut fixed to a frame but axially displaceable over the annual screw when the annular screw is rotated. A piston at one of the ends of the second nut presses the disk against one another to ensure braking.

Abstract: An electric parking brake mechanism characterized in an electric parking brake for pressing a friction member to a braked member via a force transmission converting mechanism for converting a rotational movement of an electric motor to a linear movement, including an input shaft connected to a side of the electric motor, an output shaft connected to a side of a brake mechanism for pressing the friction member to the brake member and a cam mechanism interposed between the input shaft and the output shaft, the cam mechanism is provided with a plurality of cam members and each having a cam face having a radius gradually increasing relative to a rotational center and in driving only a side of the output shaft, rotation of the output shaft is hampered by operating all of the plurality of cam members to constitute sides of large diameters.

Abstract: An electromechanical wheel brake device has a helical gear for converting the rotating motion of an electric motor into a translating motion of a brake piston in order to press a brake pad against a brake disc in an advancing stroke or in order to release the brake pad in a restoring stroke. In addition, a clutch is provided, which operatively disengages a part of the helical gear from the electric motor should a permissible restoring stroke be exceeded. This prevents a mechanical failure or damage to the wheel brake device in the event of such a malfunction. The electromechanical wheel brake device can be used in motor vehicles such as cars.

Abstract: A seal device for use in sealing between parts of a thrust assembly of a disc brake has a support element (31) adapted to be carried by a first part (25) of the thrust assembly, the support element (31) carrying a seal (33) arranged so that, with the support element (31) in its position of use on the first part (25), the seal (33) engages a surface of a second part (25) of the thrust assembly in sealing relationship. Also disclosed is a thrust assembly for a disc brake and a disc brake incorporating such an assembly.

Abstract: An actuator including a housing accommodating a screw mechanism and a drive including a motor. The screw mechanism includes a nut and a screw, one of which is rotatably supported with respect to the housing. Upon relative rotation of the nut and the screw, linear movement of one of the nut and the screw is obtained. At least a rotatable component of the drive, for example, the rotor of the motor, is rotatably supported on the screw which is rotatably supported with respect to the housing.

Abstract: A park brake system for vehicles is provided that has an actuator with an electric drive motor (36, 38) and an electronic control unit. A reduction gear has an input connected to the output of the electric motor and a pull force output member (56) for connection to mechanical brakes of the vehicle. The reduction gear has an input connected to the output of the electric motor. A command unit is connected to the electronic control unit. The reduction gear comprises a first reduction train and a second reduction train. The first reduction train includes a worm gear (42, 44) and the second reduction train includes a threaded spindle (46) and a screw nut (50) engaged with the spindle (46). The worm gear connects the spindle (46) to the output of the electric motor (36, 38). The pull force output member (56) is connected to the screw nut (50). The two-step reduction gear ensures the required high rate of reduction to generate high pull forces with a relatively compact electric motor.

Abstract: A method of accommodating wear in an electrically operated brake assembly includes setting a home position when a brake shoe engages a brake drum. A stepper motor drives the brake shoes into engagement with the drum. Upon engagement of the brake shoes with the drum, the stepper motor slips. Slipping of a stepper motor indicates that a home position has been reached. Upon release of the brake, the brake shoe is moved away from the drum a fixed distance. The fixed distance is an optimal distance between the friction member and the rotating member such that regardless of wear, the distance relationship between the brake shoe and drum is maintained.

Abstract: A disc brake assembly has a hub that is rotatable about an axis and at least a pair of discs supported on the hub for relative axial movement along the axis of the hub with the discs having opposite sides presenting braking surfaces. A non-rotatable support structure supports a plurality of friction elements for relative axial movement into and out of frictional braking engagement with the braking surfaces of the discs. An electric actuator is mounted on the support structure adjacent at least one of the friction elements and is operative when actuated to move the friction elements into frictional braking engagement with the braking surfaces of the discs.

Abstract: An actuating unit for an electromechanically operable disc brake for automotive vehicles including a driving unit or an electric motor, an actuating element secured against rotation and causing one of two friction linings that are arranged slidably in a brake caliper to move into engagement with a brake disc, as well as a reducing gear interposed between the electric motor and the actuating element. To ensure the testability of the reducing gear, the present invention includes an anti-rotation mechanism of the actuating element be arranged in a gearbox casing accommodating the reducing gear.

Abstract: In an electrically actuatable disc brake, rotation of a rotor of an electric motor is reduced by means of a differential reduction mechanism. A ball ramp mechanism is operated to press brake pads against a disc rotor to generate a braking force. In the differential reduction mechanism, when an eccentric shaft of the rotor is subjected to eccentric rotation, an external gear member having external input teeth meshing with a fixed ring gear performs an orbital motion while rotating on a center axis of the gear member, whereby a set of external output teeth of the gear member performs an orbital motion while rotating on the center axis to operate a ring gear integrally formed with a rotary disc of the ball ramp mechanism. A high reduction ratio can be easily obtained. The differential reduction mechanism can be easily formed and imparted with sufficient strength.

Abstract: An electrically operated disc brake includes a ball/ramp mechanism operable to convert rotary motion of an electric motor to linear motion and transmit the linear motion to a piston so that the piston is advanced to urge a pair of friction pads against opposite sides of a disc rotor to produce a barking force. The disc brake also includes a pad wear adjusting mechanism operable to threadably move the piston relative to an axially movable member of the ball/ramp mechanism in response to the amount of pad wear. The axially movable member has a female thread along its full length. The piston includes a piston head and a piston rod joined to the piston head. The piston rod has a male thread or threaded section. The threaded section has a length such that the piston can safely be moved together and relative to the axially movable member. The piston also has a smooth section extending from the threaded section toward the disc rotor.

Abstract: A wheel brake device, which in particular is actuatable electromechanically, for a motor vehicle, includes a pivotable lever, one end of which is engaged by an energy-storing spring element and which with its other end presses against a wheel brake lining. The lever is pivotably supported by a support means that is displaceable in the longitudinal direction of the lever. By displacement of the support means in the longitudinal direction of the lever, a lever arm with which the energy-storing spring element engages the lever lengthens, and a lever arm with which the lever presses against the wheel brake lining shortens. A pressure force with which the energy-storing spring element, via the lever, presses the wheel brake lining against a brake disk can be adjusted by displacement of the support means.

Abstract: A vehicular brake apparatus, which is provided at a shaft of a motor that revolves due to depression of a brake pedal, has a variable gear mechanism including a non-circular spur gear that changes a reduction ratio from a high gear ratio to a low gear ratio along with revolution. Revolution is converted to linear movement by roller bearings interposed between two ramp portions each having a straight inclined surface, and a friction member is pressed against a disk by a friction material holding portion being moved in a straight direction. Further, a braking force is generated on the disk by the friction member and another friction member provided on the opposite side of the caliper.

Abstract: An actuator comprises a housing (8) which contains a screw mechanism (9) and a motor (10) which is drivably connected to the screw mechanism (9), said screw mechanism providing a linear movement in response to a rotational movement of the motor, and comprising a screw (12) and a nut (13) one of which is supported rotatably with respect to the housing (8). The linearly displaceable member of the screw mechanism is drivingly connected to a pump mechanism for providing a flow of medium.

Abstract: The invention relates to a mechanically and hydraulically actuated brake cylinder for a motor vehicle, comprising an axially moveable piston (4), a pivoting shaft (11) of which a part, accessible from outside the cylinder, is intended to experience a rotational torque resulting from mechanical actuation of the brake, a ball-ramp mechanism converting the rotational movements of the pivoting shaft into translational movements of the piston and comprising a rotary plate (28) that rotates as one with the pivoting shaft, a moving plate and balls (33) housed in ramp ribs made in the facing faces of the two plates, characterized in that the said moving plate consists of the piston (4).

Abstract: An electromechanically actuated disk brake with mechanical self-boosting includes an automatic wear readjusting device, which can for instance have a positive-engagement detent device. An increased air clearance caused by wear of friction brake linings is prevented by the invention, which thus also prevents an increase in the displacement of the friction brake lining in the direction of rotation of the brake disk when the disk brake is actuated in order to attain the self-boosting.

Abstract: The invention relates to an electromechanically actuatable disk brake (10). To attain brake reinforcement, the invention proposes that a friction brake lining (40) be guided displaceably with a guide (44, 50) whose angle to the brake disk (14) is adjustable. A frictional force exerted by the rotating brake disk (14) on the friction brake lining (40) pressed against it causes a force component in the direction of the guide (44, 50), which when the guide (44, 50) is positioned obliquely creates a pressure force of the friction brake lining (40) against the brake disk (14) and thus a brake reinforcement.

Abstract: A screw actuator which has a housing, a motor, an actuating member and a screw mechanism which provides a linear movement of the actuating member with respect to the housing in response to a rotational movement of the motor. The screw mechanism has a screw and a nut engaging each other by rolling elements, one of the screw or the nut is rotatbly supported with respect to the housing, and a reduction gear means. The nut is fixed with repect to the housing, and the screw is rotatably supported with respect to the housing by mean of rolling elements.

Abstract: The present invention provides a disc brake with an integral parking brake, in which a push rod, a push rod biasing member and a spring cover are formed into an assembly in the form of a single cartridge. The push rod is divided into two separate bodies, namely, a front body portion threadably engaged with a clutch member and a rear body portion engaged with a cam rod. In this disc brake, it is possible to prevent a loss of an output force of a piston under a high fluid pressure. There is no need to increase a diameter of a piston for compensating for such a loss of an output force of a piston, and a reduction in size of a disc brake can be achieved.

Abstract: An object of the present invention is to provide an electric disc brake apparatus having a simple constitution in which the operating condition of a parking brake can be reliably detected. A controller detects the operating condition (steps S25, S26) of a solenoid for driving a parking brake locking mechanism (holding mechanism) by means of a motor current (step S24). As a result, a state in which thrust generated by the motor (first electric actuator) is maintained by the parking brake locking mechanism, and accordingly the operative and inoperative states of the parking brake can be understood easily. Further, detection of the motor current is performed using a current sensor that is also used to realize a function of the motor (a function for moving brake pads toward a disc rotor), and hence separate current detection means need not be provided.

Abstract: A slidable disc brake assembly for vehicles includes a rotatable hub, at least one friction disc rotatable but slidable along the hub, at least two friction pads on axially opposite sides of the disc with at least one being slidable on a brake caliper. The caliper is provided with an electric primary actuator which is operative to slide the brake disc and the friction pad or pads into frictional engagement with one another.

Abstract: A spring-actuated, hydraulically releasable brake has a brake disc extending between first and second brake pads, a spring assembly urging the first pad towards the brake disc, a hydraulic piston and cylinder assembly for causing a brake releasing displacement of the first pad from the brake disc against the action of the spring assembly and a brake wear adjustment mechanism including an adjustable connection between the first brake pad and the piston and cylinder assembly, a force transmitting motion amplifier responsive to the releasing displacement, a rotatably adjustable connection provided between the piston and the first brake pad and operatively controlled by the force transmitting motion amplifier and a lost motion connection and a one-way clutch between the motion amplifier and the adjustable connection.

Abstract: An electrical vehicle parking brake device capable of reducing the size towards a cable shaft and improving the degree of freedom of mounting in a vehicle is provided for the electrical vehicle parking brake device of controlling the braking force to a wheel due to the driving power of a motor which is transmitted by way of a cable at the time of parking the vehicle.

Abstract: An actuating unit for use on an electromechanically actuated disc brake for automotive vehicles including a drive unit or an electric motor, an actuating element for actuating one of two friction linings displaceably arranged in a brake caliper, and a first and a second reducing gear. The first reducing gear is comprised as a ball screw, while a planetary gear is used as the second reducing gear. To increase the efficiency, the present invention discloses a coupling shaft used to transmit forces from the planet cage of the planetary gear to the threaded spindle of the ball screw. The ends of the coupling shaft form universal joints with the planet cage and the threaded spindle.

Abstract: A screw actuator comprises a housing (1), a nut (A) and a screw (16) one of which is axially fixed with respect to the housing and the other of which is axially displaceable with respect to the housing for moving an actuating head, as well as a motor (2) which comprises a stator (6) connected to the housing, and a rotor (7). The rotor (7) of the motor is supported rotatably on a sleeve (8), said sleeve has an inwardly directed flange (21), which carries an excentric hub (23). The excentric hub (23) rotatably supports a gear wheel (24) through bearing (30), the outer teeth of which gear wheel (24) engage the inwardly directed teeth of the ring gear (25). The ring gear (25) is driving screw (16) which is rotatably supported in the housing (1). The nut (17) of the screw mechanism (4) is slidably, but not rotatably with respect to the housing.

Abstract: An actuating unit for an electromechanically actuated disc brake for automotive vehicles which is composed of a drive unit or an electric motor, an actuating element forming one of two friction linings into engagement with a brake disc, and a reducing gear. A freewheel mechanism that interacts with the electric motor has the function of a parking brake. In order to ensure a high level of reliability in operation of the parking brake and to render it resistant to external influences, in particular, oscillations or vibrations, the present invention suggest that the freewheel mechanism be configured in such a way that its clamping effect is produced by a form-locking torque transmission and that, in its actuated state, it prevents a rotational movement of a bearing in which the rotor of the electric motor is mounted.

Abstract: A screw actuator (4) comprises a housing (1), a nut (5) and a screw (6) one of which is axially fixed with respect to the housing and the other of which is axially displaceable with respect to the housing for moving an head (21), as well as a motor (7) which comprises a stator (8) connected to the housing, and a rotor (9) which is drivingly connected to a rotatable part (6) of the screw actuator, the housing having a bore (10) accommodating at least the nut and/or screw, an axially fixed part of said nut or screw being supported with respect to a radial support abutment (11) which extends inwardly in the bore. The rotor of the motor is supported rotatably on a sleeve (13), said sleeve engaging the fixed part and extending away from the brake pad, said sleeve having a radially outwardly extending sleeve flange (14) which is interposed between said support abutment, and the axially fixed part.

Abstract: An actuator (5) comprises a housing (4) with a motor (6) and a screw mechanism (9), said screw mechanism comprising nut (10) and a screw (11) one of which is rotatably supported with respect to the housing by means of a screw mechanism support (13) allowing relative rotations of the screw and the nut with respect to the longitudinal screw mechanism axis (28), and an actuating member (15) connected to the screw mechanism by means of an actuating member connection (26), such that on relative rotation of the nut and screw the actuating member is displaced with respect to the housing. The screw mechanism support and the actuating member connection allow rotations having at least one axis transverse with respect to the longitudinal screw mechanism axis, so as to compensate traverse loading and bending moments.

Abstract: A disc brake for a heavy road vehicle has a caliper arranged at a brake disc mounted on a wheel axle of the vehicle. A thrust rod of the disc brake transforms a rotational ingoing movement from a drive means into a linear outgoing movement for transmission to a disc brake pad, intended for braking engagement with the brake disc. The thrust rod has a non-rotatable spindle, a rotatable nut member in thread engagement with the spindle, and a thrust rod gear for receiving the ingoing rotational movement. A biased roller and ramp arrangement is operationally interposed between the nut member and the thrust rod gear and is intended for rotating the nut member on the spindle at a low counterforce in the spindle and for axially transferring the nut member with the spindle at a high counterforce in the spindle.

Abstract: A braking clutch is provided for a transmission which includes a transmission housing and a plurality of planetary gear members. The braking clutch includes a floating caliper movably supported on the transmission housing. An apply hub is actuated by an electric motor. A rotor is operatively connected to one of the planetary gear members and has a portion extending between the floating caliper and the apply hub to enable selective braking of rotation of the rotor by frictionally engaging the portion of the rotor between the floating caliper and apply hub, thereby braking rotation of the planetary gear member.

Abstract: The invention relates to a compressed air-operated disk brake comprising a brake caliper to which a compressed air cylinder can be attached via a flange and in which a turning lever can be pivoted by a plunger rod of the compressed-air cylinder. The inventive disk brake should be designed in such a way that the interior of the brake caliper is protected from the penetration of dirt and moisture when the compressed air cylinder has not yet been attached, in particular, during transport and storage. In addition, no additional working operations should be required for mounting the brake cylinder, and no parts need to be disposed of. According to the invention, a cover, which is closed at first, is placed in the flange opening of the brake caliper and is provided with specified rupture locations. Since the cover does not project beyond the outer surface of the flange, it does not impede the subsequent attachment of the compressed air cylinder.

Abstract: An electric mechanical brake assembly includes a brake caliper housing, a ballscrew subassembly at least partially located within the housing, first and second electric motors, and at least one timing belt. A linearly-movable member of the ballscrew subassembly is attachable to a brake pad and is driven by a rotatable actuation shaft of the ballscrew subassembly. The timing belt operatively connects the drive shafts of the electric motors to the actuation shaft of the ballscrew subassembly. An electric-mechanical-brake motor subassembly includes first and second electric motors, a motor plate, and at least one timing belt. The electric motors are attached to the motor plate, and the motor plate is attachable to a brake caliper housing. The timing belt is operatively connectable to the motor drive shafts and to a rotatable actuation shaft, of a ballscrew subassembly at least partially located within the housing, for the drive shafts to rotate the actuation shaft.

Abstract: A disc brake assembly has a hub that is rotatable about an axis and at least a pair of discs supported on the hub for relative axial movement along the axis of the hub with the discs having opposite sides presenting braking surfaces. A non-rotatable support structure supports a plurality of friction elements for relative axial movement into and out of frictional braking engagement with the braking surfaces of the discs. An electric actuator is mounted on the support structure adjacent at least one of the friction elements and is operative when actuated to move the friction elements into frictional braking engagement with the braking surfaces of the discs.

Abstract: The invention relates to a brake application device for a motor vehicle brake, in particular to a brake application device for a rail vehicle brake and preferably to a brake application device for a rail vehicle disc brake, comprising a braking force generator for applying and/or releasing the vehicle brake and a braking force converter for converting the energy delivered by the braking force generator into a brake application motion. The brake application device is characterised in that the braking force converter is configured in such a way that the force which is to be exerted by the braking force generator during braking, in order to generate a defined brake application force which is greater than zero and less than the maximum brake force, measures zero.

Abstract: An electrically operated parking brake apparatus that includes a ball screw mechanism driven by an electric motor so as to move a nut member along a screw-threaded shaft. Two Bowden cables, for example, are connected to left and right ends of an equalizer supported on the nut member via an upper support shaft and a lower support shaft for transmitting brake operation force to wheel brakes. Since an axis of the upper and lower support shafts provided at positions facing each other across the screw-threaded shaft for swingably supporting the equalizer on the nut member passes through the center of the screw-threaded shaft, and a line connecting portion where the pair of Bowden cables are connected to the equalizer passes through the center of the screw-threaded shaft, the application of an unbalanced load to the screw-threaded shaft is prevented.

Abstract: A force application device for a vehicle's braking system in the form of a variable gear system, in which, in response to a braking command by the driver, an adjusting device adjusts a proportioning device, which proportions the force fed from the force generator in such a way that it corresponds to the braking command. The force generator is disposed in a fixed position, thus decreasing the overall size of the force application device. In the force application device, energy recovery of the elastic energy of deformation contained in the disk brake during force application conditions is achieved by feeding the energy back, during release of the brake, into a force generator, which is constructed as a spring brake actuator and which makes the energy available for brake actuation. Thus the principle of an energy see-saw is implemented.

Abstract: A screw actuator comprises a screw (1) and a nut (2) which are each provided with at least a helical groove (3,4), and a series of rollers or balls (5) which are in rolling contact with the grooves (3,4). A sleeve (6) is provided which surrounds the nut (2) at least partly. The sleeve (6) may carry a seal (7) which acts between the nut (2) and screw (1); e.g. a wiper seal. The seal (7) may be fixedly connected to the nut (2), and frictionally engage the screw (1).

Abstract: A bicycle disc brake caliper includes a housing configured to be rigidly fixed to a bicycle frame containing a pair of opposing brake pad assemblies configured to reside on opposite sides of a disc operatively associated therewith. At least one of the brake pad assemblies is advanced and retracted relative to the disc by a drive mechanism along an advancement axis to effect braking. A pad wear compensation apparatus is operatively associated with at least one of the brake pad assemblies to advance the brake pad assembly along the advancement axis as it wears. The pad wear compensation apparatus includes an adjustment knob attached to the housing for rotation about a rotation axis and fixed against axial movement.