A parking brake apparatus is provided for a vehicle having components of a parking brake system and a number of devices providing a plurality of output signals indicative of a plurality of vehicle factors. The parking brake apparatus comprises an electronic controller arranged to (i) monitor the output signals indicative of a plurality of vehicle factors, and (ii) provide one or more control signals to be applied to components of the parking brake system to apply parking brakes based upon a predefined sequence of the plurality of vehicle factors having been met.

A parking brake apparatus is provided for a vehicle having components of a parking brake system and devices for providing a plurality of output signals indicative of a plurality of vehicle factors. The parking brake apparatus comprises an electronic controller that monitors the output signals indicative of a plurality of vehicle factors, monitors for a pre-startup sequence of the plurality of vehicle factors having been met, monitors for a driver request to unpark the vehicle, monitors for a pre-release sequence of the plurality of vehicle factors having been met, and applies one or more control signals to components of the parking brake system to release parking brakes based upon a valid pre-startup sequence of the plurality of vehicle factors having been met, a driver request to unpark the vehicle, and at least one valid pre-release sequence of the plurality of vehicle factors having been met.

Disclosed herein is an electromagnetic brake system. The electromagnetic brake system includes a brake disc configured to be rotated together with a drive shaft of a drive motor configured to operate a vehicle wheel, an armature disc configured to be movable so as to be in close contact with or so as to be separated from one side of the brake disc, an elastic member configured to elastically press the armature disc to the one side of the brake disc to a direction in which the armature disc is in close contact with the brake disc, and an inductor configured to separate the armature disc from the brake disc by an electrical signal. The brake disc includes a tube portion mounted on the drive shaft, and a plate portion provided to extend in an outward direction of the tube portion to be opposite to the armature disc. The tube portion and the plate portion are provided as a single member in which the tube portion and the plate portion are integrally formed with each other.

Disclosed herein is an electronic brake apparatus that includes a spring pack, a first piston in which the spring pack is mounted, a bolt screw rotated in conjunction with a motor and having one end in point contact with the spring pack, a fixing member configured to bind the bolt screw to the first piston, and a second piston screwed to the other end of the bolt screw.

A parking lock arrangement for a drive train of a motor vehicle includes a controllable locking mechanism and an unlocking mechanism. The controllable locking mechanism includes a spindle drive with a spindle shaft rotationally drivable about a spindle axis, an actuator for rotating the spindle shaft and a positioning element movable by rotating the spindle shaft for actuating a blocking element. The blocking element acts at least indirectly on a drive element in a blocking or releasing manner. The unlocking mechanism includes an unlocking element and a manually operable control element. The unlocking element is movable via the control element from a normal position, in which the unlocking element is spaced apart from the spindle shaft, into an engagement position, in which the unlocking element is coupled in torque-transmitting manner to the spindle shaft for forced releasing of the locking mechanism.

A traction assembly for terrestrial traction machines, which includes at least one gearmotor adapted to be associated with a track or wheel of the terrestrial traction machine, and a parking brake of an electromagnetic type which is associated with the gearmotor, and wherein the parking brake is of a multi-dry-disk type and is interposed between the driving component of the gearmotor and a speed limiter of the gearmotor.

The invention relates to an electromechanical brake booster for a vehicle brake system, comprising an actuating unit that can be coupled to a brake cylinder. The actuating unit comprises at least one actuating element that can be coupled to an electric motor by means of a transmission. The actuating unit also comprises an actuating member that can be coupled to a force input member. The brake booster comprises at least one housing in which at least sections of the actuating unit are received. At least one damping element is arranged between the at least one housing and at least the at least one actuating element.

An electric motor-driven parking brake of a motor vehicle can be released in an emergency by applying emergency current from a parallel emergency current source to the motors controlling the parking brake. The direction of the emergency current is selected to reverse the motors, i.e., release the parking brake.

A parking brake valve device for controlling a spring accumulator parking brake in an electro-pneumatic brake system includes a compressed air inlet configured to connect to a compressed air supply. The parking brake valve device also includes an electro-pneumatic handbrake (EPH) valve configuration and a parking brake control outlet configured to connect a spring accumulator parking brake, and a trailer control valve (TCV) device configured to control a trailer control outlet and a trailer supply outlet for a trailer brake system. The parking brake valve device further includes a multiplex switching device connected to the compressed air inlet and having electro-pneumatic switching valves configured to be controlled via electrical control signals for selective compressed air supply and venting of the EPH valve configuration and/or the TCV device.

A parking lock arrangement for a drive train of a motor vehicle includes: a controllable locking mechanism for blocking a rotational movement of a drive element in the drive train of the motor vehicle, wherein the locking mechanism comprises a spindle drive with a spindle shaft rotationally drivable about a spindle axis, an actuator for rotatingly driving the spindle shaft and a positioning element movable by rotating the spindle shaft for actuating a blocking element, which acts at least indirectly on the drive element in a blocking or releasing manner, and an unlocking mechanism for forced releasing of the locking mechanism, the unlocking mechanism comprises an unlocking element for rotating the spindle shaft and a manually operable control element for operating the unlocking element, characterized in that the unlocking element is movable via the control element from a normal position, in which the unlocking element is spaced apart from the spindle shaft, into an engagement position, in which the unlocking element is coupled in torque-transmitting manner to the spindle shaft for forced releasing of the locking mechanism. A drive unit comprises such a parking lock arrangement.