Abstract: 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.

Abstract: 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.

Abstract: A tool for finding a point on the ground that is directly below the bottom dead center of a rotatable drum. The tool includes magnetic wheels that support the weight of the tool as the tool is rolled along the bottom of the drum and a level that indicates when the tool is in the proper position to direct a pointer downwardly to define the point on the ground.

Abstract: A caliper for measuring the size of an object, especially the thickness of an object with non-planar surfaces. After measured, the caliper can be removed from the object without changing the measured value. The caliper includes a scale ruler, a vernier slidably disposed on the scale ruler, a first jaw fixedly connected to the scale ruler and a second jaw pivotally connected to the vernier. In normal state, the second jaw is kept in a position in alignment with and in parallel to the first jaw, whereby the caliper can be used to measure the object in a common manner. After measured, the second jaw is rotated to another position, permitting the caliper to be removed from the measured object.

Abstract: A brake pad measuring device is designed to be small enough to fit through various suspension components or many vehicles' wheel aperture and still maintain the ability to move in three-dimensions. The device is compact enough so that it may take an accurate reading of the thickness of a brake pad while being between the caliper housing and the brake pad backing plate of a vehicle. The device also comprises a spring so that once it is correctly placed, it may be manipulated in order to automatically get a reading of the thickness of a brake pad to the closest millimeter or 32nd of an inch by releasing the spring to cause a measurement to be automatically taken. Using this device, any user can get quick, reliable measurements for all four sets of brake pads in a matter of minutes and all without having to remove a single wheel from the vehicle.

Abstract: A device for measuring an inside diameter of a drum brake has a generally planar beam with a readout member slidingly mounted for longitudinal translation along the beam. A face of the readout member is adapted for display of a distance measurement that is obtained from a measuring device also on the readout member. First and second measuring jaws extend outwardly from the beam in a direction that is normal to both a longitudinal and a transverse axis of the beam, the first measuring jaw being affixed to the beam inwardly from a first end of the beam, leaving a portion of the beam between the first end and the first measuring jaw and the second measuring jaw affixed to the readout member. Measuring tips, extending in opposite directions are affixed to the respective measuring jaws.

Abstract: A device for measuring a thickness of a disc brake has a frame with a pair of spaced-apart clovis arms. A fixed first anvil is arranged in the first of the clovis arms, with a tip of the anvil directed inwardly towards a tip of a opposing, co-axial second anvil. The second anvil is mounted for sliding motion in a bore in the second of the clovis arms. The second anvil has a meter for displaying an axial translation measurement disposed on it, outside of the clovis arm. The meter is in communication with a device for measuring the axial translation, such as a vernier. A lift device on the second anvil may be provided to facilitation fine control of the axial translation. Preferably, a biaser urges the second anvil towards the first anvil, and a delimiter of this biasing urge may be provided.

Abstract: A brake evaluation gauge is useful to determine a brake lining thickness and/or brake drum wear. Depending on the particular embodiment selected, one of a thickness measurement, a percentage of brake life left, a pass or a fail indication may be indicated for the thickness of the brake lining. A first end of a gauge is inserted between a brake shoe table and a brake drum of applied air brakes to provide this reading. Furthermore, a recess in the gauge is placed over a ridge created by wear of the brake lining on the brake drum. If the ridge contacts the interior surface of the recess, then excessive wear of the brake drum is indicated.

Abstract: A brake drum caliper is disclosed having a beam and two jaws for measuring the inside diameter of a cylinder, with the improvement of limit stops on each jaw for accurately measuring diameter of the cylinder in at least two depths from the top of the cylinder.

Abstract: A wear detection probe is provided to cushion an impact from a rotor to the wear detection probe and to hold the wear detection probe in a specified position during the contact with the rotor. For these purposes, a biasing mount plate 16 is formed with biasing pieces 21. A stopper mount plate 15 is formed with stopper pieces 19, and a wear detection probe 10 is provided with locking pins 14. When being subjected to an impact from a rotor R, the wear detection probe 10 moves backward while the biasing pieces 21 undergo an elastic deformation by being pushed by the locking pins 14, with the result that the impact is cushioned. When the wear detection probe 10 moves backward, the locking pins 14 come into contact with the stopper pieces 19 and, accordingly, the wear detection probe 10 is held in contact with the rotor R while being held in the specified position.

Abstract: The invention provides a brake lining wear indicator for use with a brake pad/shoe having a friction lining secured to a plate. The indicator includes a flag positionable adjacent a thickness of the lining, and a base and a resilient member for clipping the indicator onto the plate. The base rigidly extends from the flag, generally perpendicular to the flag and is positionable against a side of the plate. The resilient member is for extending to the other side of the plate to clamp the base against the plate and secure the flag adjacent the thickness of the lining. The thickness of the lining can then be compared to the height of the flag to determine the amount of lining wear.

Abstract: A brake drum gage is described for measuring the inside diameter of a brake drum of a vehicle with the wheel mounted on the vehicle in the presence of an axle tube and other undercarriage components or parts. The brake drum gage includes an elongate generally flat bar having proximate and remote ends and defines an elongate axis in a reference plane. A fixed element is fixedly mounted at the proximate end of the bar and a movable element is movably mounted on the bar for movements along the bar between the proximate and remote ends for adjusting the spacing between these elements. Each element includes a generally V-shaped arm that includes an upright portion generally parallel to the reference plane and an angled portion inclined in relation to an associated upright portion.

Abstract: A brake testing device evaluates the condition of a disk having a disk axis and first and second disk surfaces that are normal to the disk axis. The device has a pair of gauges, each having a sensing element for measuring the position of one of the disk surfaces along a line parallel to the disk axis. The gauges generate position signals corresponding to the measured positions of the disk surfaces. The gauges are secured with respect to each other so as to measure positions along parallel lines, and the device positions the gauges to measure the disk surfaces at points equidistant from the disk axis. The gauges are preferably configured to allow testing a disk surrounded by a wheel and a dust shield. The device may be part of a system which processes the position signals to determine the thickness and the lateral run-out of the disk. The system may additionally compare the thickness and lateral runout to manufacturer-specified standards.

Abstract: An apparatus and method for measuring the circularity of a brake drum while the brake drum is mounted upon a vehicle. The apparatus includes a linear voltage displacement transducer mounted upon a stationary portion of the vehicle. The transducer senses the variation of the braking surface and generates a signal proportional thereto. The apparatus also includes an optical encoder that generates a signal indicative of the angular position of the drum. The transducer and encoder are connected to a central processing unit which receives the transducer and encoder signals. The drum is rotated through a plurality of complete revolutions while the central processing unit combines the transducer and encoder signals to generate a set of data points. The central processing unit operates upon the data points to determine the circularity of the braking surface.

Abstract: An adjustable gage is provided with a plurality of pairs of depth stops along the jaws or arms which support the pointed anvils which contact an internal or external cylindrical surface. By adjusting selected depth stops, an either retracted or extended positions, one pair of depth stops engages a rim or abutment surface of a cylindrical member, thereby insuring that the measurement anvils will contact diametrically opposite sides of the cylindrical surface to be measured along a plane which is substantially normal to the axis of the cylindrical surface. This avoids oblique misalignments of the gage and assures precise measurements.

Abstract: A round open end container is supported and held on a turntable by a chuck. The edge of the container is guided and supported by rollers on roller heads mounted on brackets of stanchions positioned on opposite sides of the container. The brackets are movable vertically on the stanchions and the stanchions are movable radially relative to the turntable for positioning the rollers in supporting engagement with the edge of the container. A robot arm carries a C-shaped frame with opposing arms movable over the edge of the container between the rollers. Non-contact sensors are mounted on the arms of the C-shaped frame and are movable with the arms to predetermined vertical positions on opposite sides of the container wall for measuring the thickness of the wall at predetermined positions provided by rotation of the turntable.

Abstract: A brake drum measuring apparatus. There is a receiving bracket having a main portion with a longitudinal cavity and a distal, depending portion for mounting a pin to abut against the inner circumference of a brake drum. A guage member is slidably received within the longitudinal cavity of the receiving bracket, and has a main portion with a coarse measuring scale, an actuating means for operating a fine measuring scale and a distal depending portion for mounting a pin to abut against the inner circumference of a brake drum. There is a lock for fixing the position of the guage member in the longitudinal cavity of the receiving bracket. A fine measuring scale is mounted on the receiving bracket and cooperates with the actuator of the guage member as the guage member slides in the longitudinal cavity. A pointer is mounted on the receiving bracket to point to the coarse measuring scale.