A tool for retracting pistons into cylinder bores is disclosed. Plates of the present invention are locked by a key to prevent the plates from spinning independently. Additionally, the key acts as an internal stop, providing a point beyond which the plates cannot be further spread or separated from one another. Additionally, a spring is provided to prevent the thread from turning independently from the plates.

A tool for retracting pistons into cylinder bores is disclosed, with a narrow gap between facing pressure plates allowing use of the tool in tight places, and ratcheting spreading of the facing pressure plates causing outward moving of the pistons, enabling work to be performed, wherein movement of a threaded stud through a coupler moves a first pressure plate.

A method for manufacturing a disc brake, the disc brake having a brake caliper and a brake actuation mechanism being supported in it, in which the brake actuation mechanism includes an amplification mechanism for introducing a clamping force, an adjustment device for compensation of lining wear with a torque clutch, a thrust element for transmitting the clamping force onto a brake disc and a reset device, which components are arranged around a rod, in which the torque clutch is formed as a roller-ramp-mechanism. A spring force can act onto the torque clutch by means of the reset device thereby forming a torque limit.

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).

A system and method are provided for continuous monitoring and controlling of aircraft braking that can reduce brake wear and aircraft operating costs through the retention of carbon brake powder from the brakes or addition of carbon powder in a device mounted with respect to the brake disc stack. The use of carbon powder reduces brake wear by providing small particles between the brake discs, acting as a buffer between the brake discs when the brake stack is clamped together. Moreover, when carbon powder or small particles are used at application, such use reduces the roughness of the carbon surface and reduces the number of large particles from braking off the carbon surface, thereby reducing brake wear. Adaptive or selective braking may be used in conjunction with carbon powder to further reduce carbon brake wear.

A quick release device of a brake cylinder includes: a first support iron plate; a second support iron plate installed with an interval from a side of the first support iron plate; an iron plate ejector, installed between the first and second support iron plates, for expanding the relative distance between the first and second support iron plates; a wrench assembly, sheathed on the iron plate ejector in a quick release status; and at least one quick release portion, installed at a relative position of the iron plate ejector and the second support iron plate, so that the second support iron plate is in a quick release status.

An adjusting assembly of a brake cylinder installation device is provided, including: a fixing member; a guiding member, connected to the fixing member along an axis thereof, the guiding member having a plurality of sliding grooves therethrough and around the axis; a rotatable body, rotatably arranged between the fixing member and the guiding member, the rotatable body having a plurality of guiding grooves which correspond to the sliding grooves; a plurality of positioning pillars, respectively arranged between the sliding grooves and the guiding grooves, when the rotatable body rotates, the positioning pillars move linearly within the sliding grooves; wherein each said positioning pillar further includes a barrel portion and a rod portion which are retractably connected with each other.

A piston position installation device of a brake cylinder is provided, including: a main rod, having a first driving portion and a first threaded section along an axial direction and toward the first driving portion, the main rod having an interior hole with a second threaded section, screwing directions of the first and second threaded section being counter to each other; an abutting rod, having a second driving portion, a restricting portion and an exterior threaded portion screwed with the second threaded section, rotatably arranged within the interior hole; a force exerting member, having first and second force exerting portions, the first and second force exerting portions being arranged on the first driving portion and the second driving portion, respectively; a socket, screwed with a first threaded section of the main rod; a blocking board, laterally outwardly protrusive from the socket.

A multi-function portable optoelectronic apparatus to determine the profile of a brake disk and the profile of the tread of a tyre comprising an optoelectronic assembly for emitting a laminar beam of light along an optical emission axis so as to project onto the brake disk or onto the tread a luminous line and acquire an image containing the projected luminous line, a tubular case which can be gripped by hand, which contains optoelectronic assembly and is designed to be arranged resting on the brake disk during determination of the profile of the brake disk and an angular adapter member designed to be coupled in a stable but easily removable manner to the case and shaped to be arranged resting on the tread during determination of the profile of the tread; an electronic system configured to receive the image and determine the profile of the brake disk or the profile of the tread on the basis of the luminous line contained in the image.

A hydraulic brake caliper piston/plunger tool includes a handle, a barrel with rear and front tubes, and a shaft. The handle is provided therein with a fluid reservoir and a fluid chamber, and pivotally connected with an operation lever having a plunger inserted into the fluid chamber. The shaft is attached with a piston and fitted through the rear tube, the barrel and the front tube. A return spring is fitted around the shaft in a central hole of the barrel, between the piston and the front tube. A front end of the shaft is adapted to be fitted with an accessory for a disc brake. A rear end of the shaft is adapted to be connected with a turning tool. In use, alternately depressing and releasing the operation lever enables fluid to enter the central hole of the barrel to have the piston together with the shaft moved forward.