A tool and method of measuring friction material of a brake pad assembly. The tool includes a sleeve and a plunger that is received in the sleeve. The plunger may have a probe that extends through a sleeve slot and a ground plate that is moveably disposed on the sleeve.

Methods and apparatus to sense brake pad wear are disclosed. An example apparatus includes at least one memory device and at least one processor to execute instructions to determine whether a braking event corresponds to an anti-lock braking event or a non-anti-lock braking event, in response to the braking event corresponding to the anti-lock braking event, determine at least one of a thickness of a brake pad or a wear of the brake pad based on at least operating parameters of a motor associated with pumping a brake fluid, and in response to the braking event corresponding to the non-anti-lock braking event, determine at least one of the thickness or the wear based on at least a first measurement from a rotary sensor operatively coupled to a brake rotor and a second measurement from a pressure sensor operatively coupled to a flow path of the brake fluid.

A multi-disc brake is provided. The brake can include a radial wear pin cartridge for wear indication. The brake can include an integrated water jacket for cooling.

A method (200) for detecting the clearance of a brake (100) of a motor vehicle, in particular a utility motor vehicle, includes the following steps: reading measurement signals of a wear sensor (115) disposed on the brake (100), determining an output signal value that is representative of the non-actuated state of the brake from the measurement signals, determining an event signal value that is representative of the braking state of the brake from the measurement signals, and determining the clearance from the difference between the event signal value and the output signal value, wherein the measurement signals of the wear sensor are examined for the presence of a characteristic signal oscillation that arises as a result of bringing into contact the brake lining with the counterpart thereof that is to be braked. A controller (10) carries out the method on a brake (100).

Methods and apparatus to sense brake pad wear are disclosed. An example apparatus includes at least one memory device and at least one processor to execute instructions to, in response to an anti-lock braking system event, determine a volume of brake fluid in a brake piston chamber based on a flow rate of the brake fluid and a pressure within the brake piston chamber, and determine at least one of a thickness of a brake pad or a wear of the brake pad based on the volume of the brake fluid in the brake piston chamber and a volume of the brake piston chamber.

The present application describes a portable or stationary light electric vehicle brake inspection device that may be used to check the brake system of a light electric vehicle. The light electric vehicle brake inspection device helps manufacturing staff or technicians take the guesswork out of determining whether the brake system of the light electric vehicle is operating as expected. Additionally, the light electric vehicle brake inspection device can remove or minimize brake check inconsistencies across a manufacturing and maintenance team as the light electric vehicle brake inspection device described herein can consistently produce light electric vehicle brake systems and run the same test on a brake system across an entire fleet of light electric vehicles during their manufacturing or field operation processes.

The present application describes a portable or stationary light electric vehicle brake inspection device that may be used to check the brake system of a light electric vehicle. The light electric vehicle brake inspection device helps manufacturing staff or technicians take the guesswork out of determining whether the brake system of the light electric vehicle is operating as expected. Additionally, the light electric vehicle brake inspection device can remove or minimize brake check inconsistencies across a manufacturing and maintenance team as the light electric vehicle brake inspection device described herein can consistently produce light electric vehicle brake systems and run the same test on a brake system across an entire fleet of light electric vehicles during their manufacturing or field operation processes.

A toothed holding brake for a vehicle door has a shaft, an armature plate, a magnet device and a detection device. The armature plate has a first and second main surfaces arranged opposite one another, wherein an armature-plate toothed rim having a plurality of armature teeth is arranged on the second main surface. The armature plate is arranged in a locking position such that the armature teeth mesh in the carry-along teeth to prevent rotation of the shaft in at least one direction, and is arranged in a release position such that the armature teeth are arranged at a distance from the carry-along teeth to enable rotation of the shaft in both directions. The magnet device has a magnet main surface arranged facing the armature plate, wherein the magnet device is designed to move the armature plate between the locking position and the release position.

A brake system and wear monitoring for use in motor vehicles includes a transponder, wherein the transponder is configured and positioned in the brake system such that the transponder is deactivated by an engagement geometry of the brake system when a preselected wear state of the brake system is reached.

A brake device (102), in particular a utility vehicle disc brake, has a brake disc (106), at least one brake pad (104, 104′), a transmission member (114) coupled to the brake pad (104, 104′) for pressing the brake pad (104, 104′) against the brake disc (106), a drive for generating a drive variable, a non-linear mechanism (110) operatively connected to the drive and the transmission member (114) for transmission of the drive variable to the transmission member (114), and an adjusting unit (120) for adjusting a clearance (108) between the transmission member (114) and the brake disc (106). The device includes a brake pad wear sensor for detecting the degree of wear of the brake pad (104, 104′) and a control unit, with a signal-carrying connection to the sensor to vary the clearance (108) as a function of the wear of the brake pad (104, 104′) determined by the sensor.