A slack adjuster for narrow gauge rail cars including a housing having a body with a first clevis joint, a coupling secured to the body, and a guide tube secured to the body coupling. A lever is pivotally coupled to the housing for moving an actuator coupled to a clutch. The clutch is engaged with the external threads of a rod and moveable between a first captured position, a second position where the clutch is free to rotate, and a second captured position to selectively control movement of the rod. Movement of the lever withdraws the actuator so that the clutch releases and can spin, allowing the threaded rod to translate from the retracted to extended positions. Opposing forces applied to a ram causes the clutch to move to the second captured position, thereby preventing rotation of the clutch and preventing the threaded rod from retracting further into the housing.

An adjuster for an air disc brake includes an over-torque clutch arrangement that includes an adjuster drive plate having ramped detents, and a ball-carrying plate having pockets for retaining ball bearings. Ball bearings are carried and retained in the ball-carrying plate, and transmit rotation between the adjuster drive plate and the ball-carrying plate below a torque threshold. Above a torque threshold, the balls move axially away from the adjuster drive plate against the force of a spring, and ride up the ramped detents. Above the torque threshold, rotation is not transmitted.

A disk brake includes a brake disk, a brake caliper, at least one application device lying within the brake caliper on one side of the brake disk, an axially movable device configured to move a brake pad axially toward the brake disk, and an adjustment mechanism configured to be rotated about an rotation axis lying parallel to a rotation axis of the brake disk and which, in the case of rotation in a first direction of rotation bringing about adjustment, is configured to rotate the actuating spindle. The adjustment mechanism includes a thread device which, at least in a rotation in a second direction of rotation opposite the first direction of rotation, is configured to mesh with the external thread of the actuating spindle and to screw the adjustment mechanism in relation to the actuating spindle.

An internal expanding shoe brake includes expansion pistons for forcing opposing brake shoes apart. In each expansion piston one adjusting pin is axially movably arranged and presses against a brake shoe web by means of a pressure piece. Said pressure piece is supported on the adjusting pin by means of a ball joint so as to pivot in any direction. In order to prevent the adjusting pin from being twisted inside the expansion piston, an anti-rotation element is provided and comprises a pressure piece projection which projects over the ball joint surface of the pressure piece, said projection interlockingly engaging in a receiving opening of the adjusting pin with lateral play and forming a rotational coupling connection.

The invention relates to an actuating device for an internal shoe brake, including an automatic adjusting device with an adjusting lever which includes a guide track in the form of a guiding slot with two opposing track surfaces which cooperate with opposing sides of a housing-fixed guide element in order to convert a displacement of the adjusting lever relative to the housing-fixed guide element into pivoting movements of the adjusting lever.

The invention relates to an actuating device for an internal shoe brake, including an automatic adjusting device with an adjusting lever which includes a guide track in the form of a guiding slot with two opposing track surfaces which cooperate with opposing sides of a housing-fixed guide element in order to convert a displacement of the adjusting lever relative to the housing-fixed guide element into pivoting movements of the adjusting lever.

An adjusting device is disclosed for adjusting friction surface wear on brake linings and a brake disk of a disk brake. The adjusting device is couplable to a brake application device on the drive side, and to a spindle unit of the disk brake on the output side. The adjusting device includes a drive element on both sides of which a rolling element assembly is axially arranged; a pressure element; an output element coupled to the pressure element for coupling to a coupling wheel; an energy storage element; and a support body, one end of which is connected to a bearing plate and around which the drive element, the rolling element assemblies, the output element and the energy storage element are arranged axially in series with the bearing plate. The energy storage element is arranged between a bearing portion of the support body and the pressure element.

A brake actuation assembly comprising a thrust and support element comprising a first thrust end adapted to cooperate with a first jaw of a brake; the thrust and support element comprising a second thrust and support element end; a lever rotatably supported to the thrust and support element for rotating at least along a rotation thrust direction; the lever comprising a first lever end adapted to cooperate with a second jaw of the brake; the lever comprising a second lever end, wherein the second lever end comprises a hooking seat; and wherein the hooking seat is adapted to firmly receive a connecting portion of a coupling end of a traction cable, the traction cable having a cable body capable of an elastic flexural deformation; the hooking seat being arranged undercut with respect to the rectilinear development direction of the cable body; the lever being adapted to oscillate; wherein the lever comprises a lever abutment surface which cooperates with a stop abutment counter-surface provided in the thrust and support element to prevent a free rotation of the lever in the opposite direction to the rotation thrust direction; the thrust and support element and the second lever end delimiting a guide channel which allows the passage of at least the coupling end; the guide channel allowing the coupling end to rotate about the second lever end and to be coupled to the hooking seat upon the elastic return of the cable body to a substantially straight cable body position, preventing the rotation of the lever in the opposite direction to the rotation thrust direction.

A transmission mechanism (1) for actuating a friction clutch, which can be disengaged against a spring force and is arranged between an internal combustion engine and a manual transmission, includes two lockable elements (11, 16) that are movable toward one another longitudinally to automatically change the length and compensate for clutch wear. The first element (16) consists of a spindle (16) which is coupled to a non-rotatable component of a disengagement mechanism of the friction clutch in a rotationally fixed and axially displaceable manner and has a steep-pitch external thread (19). second element (11) consists of a nut (11) having a steep-pitch internal thread (15) which is complementary thereto and into which the spindle (16) can be screwed, the pitch of the steep-pitch thread (15, 19) being dimensioned in such a way that no self-locking can occur between the two elements (11, 16).

A transmission mechanism (1) for actuating a friction clutch, which can be disengaged against a spring force and is arranged between an internal combustion engine and a manual transmission, includes two lockable elements (11, 16) that are movable toward one another longitudinally to automatically change the length and compensate for clutch wear. The first element (16) consists of a spindle (16) which is coupled to a non-rotatable component of a disengagement mechanism of the friction clutch in a rotationally fixed and axially displaceable manner and has a steep-pitch external thread (19). second element (11) consists of a nut (11) having a steep-pitch internal thread (15) which is complementary thereto and into which the spindle (16) can be screwed, the pitch of the steep-pitch thread (15, 19) being dimensioned in such a way that no self-locking can occur between the two elements (11, 16).