A device for detecting a layer thickness of a coated component, particularly a brake disc for a disc brake of a motor vehicle, includes at least one holding device and a guiding device. The holding device has a bearing surface for the component. The guiding device is configured to hold and guide a sensor in order to measure the layer thickness. The sensor is configured to be moved by the guiding device along a vertical axis and pivot about a first axis of rotation that is oriented horizontally. The sensor is further configured to be moved by the guiding device along a horizontal axis.

The invention relates to a master brake cylinder arrangement with actuation detection for a motor vehicle braking system, having at least one piston arrangement with a piston, which is movably guided in a cylinder bore in a cylinder housing, said piston with the cylinder bore defining a pressure chamber which is fluidically coupled to a hydraulic brake circuit. During a forward stroke, the piston can be moved from a start position into a possible actuation piston along a movement axis, which coincides essentially with a longitudinal axis of the cylinder bore, and during a return stroke, said piston is moved from an actuation position into a start position. The piston is associated with a coupling element which is coupled to a position detecting rod for common movement therewith, said position detecting rod being moved essentially parallel to the first cylinder bore, the position of the position detecting rod can be detected by means of a position detecting sensor placed on the cylinder housing. According to the invention, in order to save space, the coupling element can be locked relative to the piston for a common lift movement therewith and after exceeding a predetermined path of the lift movement, the piston can be moved further relative to the coupling element.

In one example, the disclosure is directed to a method of determining a length of a wear pin in a brake assembly. The method includes obtaining an input image of a portion of the brake assembly, such as with a camera. The input image includes the wear pin and a reference object, and the reference object has a known dimension. A processor may determine, based on the input image, an image dimension of the reference object. The processor may determine, based on the input image, an image dimension of the wear pin. The processor may further determine, based on the image dimension of the reference object, the image dimension of the wear pin, and the known dimension of the reference object, an estimated measurement of the dimension of the wear pin.

A brake wear gauge assembly includes a plurality of wires that is each comprised of a bendable material such that each of the wires is retained in a desired shape for guiding between a brake rotor of a vehicle and a brake pad of a vehicle. A ring is provided that has each of the wires movably disposed thereon thereby facilitating the plurality of wires to be portable. A plurality of feeler gauges is each coupled to a respective one of the wires. Each of the feeler gauges can be inserted between the brake rotor and the brake pad and each of the feeler gauges has a unique measuring thickness with respect to each other. In this way the plurality of feeler gauges can measure a variety of distances between the brake rotor and the brake pad.

A marking and measuring device for assessing a need for a brake adjustment includes a shaft. A marking means is selectively couplable to a first end of the shaft, positioning a user to grasp the shaft proximate to a second end of the shaft and to manipulate the shaft so that the marking means leaves a mark on a push rod of a brake. A ruler is coupled to the shaft proximate to the second end. The shaft is configured to be grasped in the hand of the user proximate to the first end of the shaft, positioning the user to abut the second end to a brake cylinder so that the shaft is substantially parallel to the push rod. The ruler is configured to measure the distance traveled by the mark on the push rod when the brake is actuated to ascertain a need for a brake adjustment.

The present application relates to an on-line automatic detection device for wheel brake space, which is composed of a lower lifting drive system, a detection system, a synchronous clamping drive system and an upper driving and pressing system. In use, the device may not only detect the brake space of the back cavity of the wheel, but also detect the specific value of the interference amount of the brake space. Moreover, it has the characteristics of high automation, powerful function, advanced technology, strong versatility, and safe and stable performance.

An apparatus for monitoring condition of a braking system includes a brake pad with a friction material, a plurality of light transmission fibers, and a plurality of optical image fibers. A first end of each of the plurality of light transmission fibers coupled to one or more light emitting-diodes and a second end of each of the plurality of light transmission fibers directed towards a contact surface of the brake rotor. A first end of each of the plurality of optical image fibers coupled to an image sensor and a second end of each of the plurality of optical image fibers directed towards the contact surface of the brake rotor, where the plurality of light transmission fibers and the plurality of optical image fibers are configured to capture an image of at least a section of the contact surface of the brake rotor.

In some examples, a device can be used for measuring a length of a wear indicator on a brake assembly. The device includes a moveable component configured to move based on contact with the wear indicator. The device also includes a sensor configured to detect a displacement of the moveable component. The device further includes processing circuitry configured to determine the length of the wear indicator based on the displacement of the moveable component detected by the sensor.

A brake wear gauge assembly includes a plurality of wires that is each comprised of a bendable material such that each of the wires is retained in a desired shape for guiding between a brake rotor of a vehicle and a brake pad of a vehicle. A ring is provided that has each of the wires movably disposed thereon thereby facilitating the plurality of wires to be portable. A plurality of feeler gauges is each coupled to a respective one of the wires. Each of the feeler gauges can be inserted between the brake rotor and the brake pad and each of the feeler gauges has a unique measuring thickness with respect to each other. In this way the plurality of feeler gauges can measure a variety of distances between the brake rotor and the brake pad.

The present disclosure relates to a method of measuring wear of a disk in an aircraft brake having a wear indicator that is movably mounted on a stationary portion of the aircraft brake and that moves progressively with increasing wear of the disk. The method includes using a picture-taking appliance to take at least one photograph of the wear indicator while an aircraft is stationary on the ground, and estimating a position of the wear indicator and a wear level of the disk by analyzing the photograph.