A railroad brake stick can include: a head having a planar shape with a recesses and/or protrusions on one or more side surfaces of the planar shape, the planar shape having a head interlocking groove on a hilt region; a cross-support having a planar shape with a support interlocking groove interlocked with the head interlocking groove such that the planar shape of the head crosses with the planar shape of the cross-support to form an interlocking region; and a handle coupled to the head and cross-support such that the interlocking region is within an end of the handle. In some aspects, a cover is over the handle. n some aspects, the head is a composite material and the cross-support is a composite material and the handle is a composite material.

A yoke installation and removal assisting device includes a structural body, a pair of yoke-receiving channels, a tool-receiving recess, and a pin-receiving channel. The pair of yoke-receiving channels terminally traverses into the structural body at a first end and is used to position a yoke. To prevent slipping during operation, a safety pin is preferably inserted through the pin-receiving channel and a pair of pin holes of the yoke. The pin-receiving channel laterally traverses into the structural body perpendicular to the pair of yoke-receiving channels and is used to hold the yoke against the structural body. The tool-receiving recess traverses into the structural body at a second end and is used to connect to an air tool or a manual ratchet. By operating the air tool/manual ratchet the yoke positioned within the structural body can be installed/removed.

The invention relates to a method and an apparatus for ascertaining a positional deviation of a brake disc (30) relative to a caliper seat (11). According to the invention, an angular deviation (34) from the parallel between the brake disc (30) and the caliper seat (11) is measured in that an apparatus (1) for ascertaining the positional deviation of the brake disc (30) is connected to the caliper seat (11), the apparatus (1) comprising at least two distance sensors (20, 22) that are stationary with respect to the caliper seat (11) and take measurements in the direction of a first flat face of the brake disc (30), the distance sensors (20, 22) transmitting distances (A, A′) between the first flat face of the brake disc (30) and the distance sensors (20, 22) measured at different radii (R, R′) of the brake disc (30) to an evaluation device, the angular deviation (34) of the brake disc (30) being ascertained by the evaluation device from the distances.

A disc brake (1) for motor vehicles includes at least two brake pads (25, 26), an application unit (4) with a setting spindle (5) arranged axially in the direction of the brake pads (25, 26), and a resetting device (7) for central adjustment of the setting spindle (5) after reaching a degree of wear of the brake pads (25, 26). The resetting device (7) has a housing (8), a sensor (9), a resetting shaft (10), and an adapter (11) with a decentral output (12). In one example, the adapter (11) has a cover (13) and a chain drive (14) for to transmitting an actuating movement from the decentral output (12) to the resetting shaft (10).

The disclosure relates to a method for determining a starting condition for cleaning a brake disk. A first step (S1) of this method determines that an amount of rust on the brake disk exceeds a defined threshold. Additionally, an energy quantity being necessary for removing the amount of rust from the brake disk is determined (S2). In a further step (S3), a distribution of brake energy over a current drive is estimated by using at least one parameter describing historic driving behavior and at least one parameter characterizing the current drive cycle. Subsequently, a starting speed and a starting brake force request is derived (S4). Additionally, a method for cleaning a brake disk is presented which comprises the determination of a starting condition for cleaning the brake disk by the method mentioned before. Moreover, a data processing device comprising means for carrying out said methods is explained.

The aim of the invention is to ensure a reliable lift of both brake pads of a floating-caliper brake (1) after releasing the brake. This is achieved in that a lifting part (20) is hinged to the brake caliper (2) at a hinge point (21), and the lifting part (20) is supported on the support structure (7) at a contact point (23) at least partly at releasing the floating-caliper brake (1), wherein a lift drive (22) is provided which rotates the lifting part (20) about the hinge point (21) such that a support for the lifting part (20) is produced on the contact point (23), whereby the hinge point (21) and the brake caliper (2) are moved.

The present invention is a vehicle disc brake for which incorrect installation of a friction pad can be prevented with a simple structure. The disc brake is provided with incorrect installation-preventing parts with which, if a friction pad (4) is installed with an incorrect installation orientation when a pair of tabs (10, 11) provided on the disc entry-side and disc exit-side of the back plate (4d) of a friction pad (4) is installed into pad guide grooves (9) formed on a caliper body (3), the tabs bump into the caliper body (3) and prevent the incorrect installation. The incorrect installation-preventing parts are formed from caliper-side recesses (9d, 9e), which are formed in the pad guide grooves (9) towards the center of the caliper body, and tab-side protrusions (10a, 11a), which have shapes that correspond to the caliper-side recesses (9d, 9e).

An electromechanical brake system includes a brake actuator having a power transmission for transmitting an actuating force to a brake pad, the power transmission including a rotatable shaft. A coupler with a locking element can be controlled so that the locking element is engaged with the rotatable shaft and blocks its rotation or so that the locking element is disengaged from the rotatable shaft so that the rotatable shaft can be rotated. The brake actuator has an interface configured to be connected to the locking element and to engage or disengage the locking element from the rotatable shaft.

A piston retraction tool is provided. The tool can be operated with one hand. When an operating handle is operated, the helical movements of a first external thread and a second external thread drive a first pressure plate and a second pressure plate to extend and move away from each other. First engaging pieces of first L-shaped elastic plates and second engaging pieces of second L-shaped elastic plates are distributed in the roots and on the crests of the first and second external threads. The helical movements of the first and second external threads don't interfere with each other because the first and second engaging pieces of the first and second L-shaped elastic plates are configured to jump along the first and second external threads independently. The helical movements of the first and second external threads will not be locked.

A disc brake piston retraction tool is provided. When the tool is applied to a large-scale disc brake, it is necessary to increase the width in the left-to-right direction of the working surface of a pressure plate of the tool. A plate expansion unit is coupled to the outer surface of the pressure plate. When a locking unit is inserted in a coupling hole of the pressure plate, a steel ball is retracted. After the steel ball passes through the coupling hole, a compression spring rebounds to produce a positioning effect. The backing plate can be easily and quickly mounted to the outer surface of the pressure plate to increase the width of the working surface of the pressure plate. The locking device allows the steel ball to be retracted to exit the coupling hole.