Abstract: A self-energizing disc brake includes a brake-internal hydraulic arrangement with a supply circuit and an expansion vessel; a brake application device with a brake application cylinder for applying a brake pad toward a brake disc; a force transmission unit supporting the brake pad at a wedge angle on the brake application device; a tangential-force absorbing cylinder for switching over the wedge angle; an electric-motor actuator acting on the brake application device via the hydraulic arrangement; a distributor cylinder arranged in series between the electric-motor actuator and the brake application device for pressure boosting; and a control unit. A parking brake device has an adjustable screw spindle for adjusting the brake pad, which spindle is coupleable to the electric-motor actuator for driving. The tangential-force absorbing cylinder is connectable hydraulically to the supply circuit and the expansion vessel.

Abstract: A torque sensing apparatus for use with a brake caliper having opposing brake pads positioned on opposite sides of a rotor. The brake caliper causes the brake pads to apply a braking force against the rotor that generates a braking torque. A torque transfer device is supported by the brake caliper and is in contact with one of the brake pads. The torque transfer device is resiliently movable with respect to the brake caliper in response to the braking torque. A torque sensor is positioned in a sensing relationship relative to the torque transfer device. Thus, the torque sensor provides an output signal related to a change of position of the torque transfer device and the braking torque. The torque sensor includes a magnet mounted on the torque transfer device and a magnet field sensor, for example, a Hall Effect sensor, is mounted on the brake caliper.

Abstract: The invention relates to a device for controlling a braking arrangement on a heavy vehicle. The braking arrangement comprises a main brake, which includes braking devices (1a -f), for example disc brakes, that are each arranged to act on one of the vehicle wheels (2a-f). Furthermore, the braking arrangement comprises at least one auxiliary brake (3) and a brake control (10) with which the named main brake (1a-f) and auxiliary brake (3) are activated. When a driver activates the brake control (10), a control unit (9) in the arrangement is arranged to initiate activation of the main brakes (1a-f) and the auxiliary brake (3) and thus distributes the braking effect between these brakes in such a way that the braking effect requested by the driver is obtained in the shortest possible time and in such a way that the use of the brake devices (1a-f) of the main brake is minimised after an initial period. The invention relates to a braking system for a heavy vehicle, which comprises an arrangement described above.

Abstract: A hydraulic brake system for braking a vehicle wheel includes a hydraulic fluid source, a pump connected to the hydraulic fluid source for pumping hydraulic fluid based on operation of an operating member of the vehicle and a connecting arrangement having one end connected to the pump. A wheel cylinder which is adapted to be mounted adjacent a brake disk of a vehicle wheel includes a brake pad element for being urged against the brake disk upon the application of a hydraulic fluid pressure to impart a braking force to the brake disk. The brake pad element is movable with the brake disk when the brake disk element is urged against the brake disk. In addition, a movable pressure increasing element is positioned adjacent the brake pad element and is movable away from the brake pad element as a result of the brake pad element moving with the brake disk.

Abstract: An orifice and a one-way valve for permitting a flow of a liquid only in one direction from a primary master cylinder to an input port in a secondary master cylinder of a brake system are incorporated in parallel in an hydraulic pressure introduction passageway which connects the input port in the secondary master cylinder and an output port in the primary master cylinder. Thus, it is possible to moderate a kick-back phenomenon due to a back-flow of a pressure oil from a hydraulic pressure chamber in the secondary master cylinder via the input port toward the primary master cylinder, and to rapidly fill a brake oil in the secondary master cylinder from the side of the primary master cylinder.

Abstract: A hydraulic brake system for braking a vehicle wheel includes a hydraulic fluid source, a pump connected to the hydraulic fluid source for pumping hydraulic fluid based on operation of an operating member of the vehicle and a connecting arrangement having one end connected to the pump. A wheel cylinder which is adapted to be mounted adjacent a brake disk of a vehicle wheel includes a brake pad element for being urged against the brake disk upon the application of a hydraulic fluid pressure to impart a braking force to the brake disk. The brake pad element is movable with the brake disk when the brake disk element is urged against the brake disk. In addition, a movable pressure increasing element is positioned adjacent the brake pad element and is movable away from the brake pad element as a result of the brake pad element moving with the brake disk. As a result, an increase in pressure in the wheel cylinder arises in a relatively rapid manner to compensate for compliant characteristics in the braking system.

Abstract: A device for ensuring safety by preventing mechanically raised and lowered components, roll-up gates for example, from crashing down when the motor or transmission fails. The device is characterized by a friction clutch. The friction clutch comprises a stationary half and a moving half. The stationary half is secured to the shaft inside a housing. The moving half is mounted on a base and can be electromagnetically displaced axially in relation to the base and against the stationary half. The force exerted by the moving half against the stationary half is augmented by resilient components that engage between the housing and the moving-half base.

Abstract: In a motorcycle provided with a brake, a link supporting brake caliper is fitted to a wheel axle such that it is free to oscillate, an oil chamber being provided which enlarges or contracts according to the oscillation of this link, and which is connected to a pressure passage supplying oil pressure to the brake caliper. An electromagnetic valve is provided for opening and shutting this pressure passage, and a mechanism for detecting a pre-lock condition of the wheel. By shutting the electromagnetic valve when a pre-lock condition is detected, oil pressure supply to the brake caliper is shut off, and rise of braking pressure is prevented. If the pre-lock condition persists after the oil pressure has been shut off, the oil chamber is enlarged by varying the oscillation angle of the link so as decrease the braking pressure and prevent the wheel from locking.

Abstract: In a motorcycle provided with a brake, a link supporting brake caliper is fitted to a wheel axle such that it is free to oscillate, an oil chamber being provided which enlarges or contracts according to the oscillation of this link, and which is connected to a pressure passage supplying oil pressure to the brake caliper. An electromagnetic valve is provided for opening and shutting this pressure passage, and a mechanism for detecting a pre-lock condition of the wheel. By shutting the electromagnetic valve when a pre-lock condition is detected, oil pressure supply to the brake caliper is shut off, and rise of braking pressure is prevented. If the pre-lock condition persists after the oil pressure has been shut off, the oil chamber is enlarged by varying the oscillation angle of the link so as decrease the braking pressure and prevent the wheel from locking.

Abstract: A disk brake having an electromagnetic friction clutch that can be brought into controllable frictional engagement with a brake disk. The friction clutch can act on a device for generating hydraulic pressure independent of the direction of rotation, and this pressure can act upon a clamping device for operating friction linings. To press the friction linings against the brake disk, energy is taken from the rotating vehicle wheel by means of the friction clutch and metered to the clamping device with pressure fluid as the energy carrier. The friction brake can be used in passenger cars, for example.

Abstract: A braking device for an automotive vehicle having a master cylinder to be operated by depression of a brake pedal for producing master cylinder pressure and a wheel brake assembly movably mounted to a road wheel to be operated by the master cylinder pressure applied thereto for applying a braking force to the road wheel in accordance with the depression force of the brake pedal. The braking device includes a hydraulic servo unit mounted on an axle housing of the road wheel and operatively connected to the wheel brake assembly for generating a servo-pressure in a predetermined relationship with the braking force in response to movement of the wheel brake assembly and a hydraulic control device arranged to apply the servo-pressure to the wheel brake assembly when the servo-pressure does not increase in a predetermined relationship with a increase of the master cylinder pressure.

Abstract: A brake apply system having both a mechanical system and a hydraulic system. The hydraulic system will supply the majority of braking effort. It is desirable to initiate the mechanical system slightly before the fluid brake system. If only light braking pressure is engaged upon the brake system of the operator, the brake system control valve will reduce the amount of flow to the brake apply piston. To provide for a more rapid filling, and therefore more consistent brake reaction times within the system, a valve mechanism responsive to the reaction torque within the locating brake members is provided to establish a direct fluid connection between the brake apply piston and the line pressure or main pressure of the transmission control.

Abstract: A vehicle disc brake is provided which, in a preferred embodiment, includes a first caliper pivotally mounted with respect to the vehicle, a first brake shoe slidably mounted with respect to the first caliper for selective contact with a vehicle wheel rotor, an electric actuator to selectively move the first shoe into engagement with the rotor, an actuator plate mounted for relative motion with respect to the vehicle and operatively associated with the first caliper wherein movement of the first caliper resultant of the first shoe engagement with the rotor causes the actuator plate to move, a second caliper generally locationally fixed with respect to the vehicle wheel axis, a second brake shoe mounted by the second caliper operatively associated with the actuator plate for engagement with the rotor, and a ball captured in a ramp between the actuator plate and second brake shoe for converting movement of the actuator plate into movement of the second brake shoe to engage with the rotor.

Abstract: A brake assembly with hydraulic boosting, comprises at least one disk brake having a fixed part (1), a caliper (3), a brake motor (82) actuated by a fluid under pressure, a master cylinder (48) and a device (15) for recovering the energy dissipated during braking. The device (15) comprises at least one energy-recovering cylinder (21) with its piston (19) which is associated with the fixed part (1) and with the caliper (3) and the working chamber of which is connected fluidly to the brake motor (82). A hydraulic booster/limiter is connected between the energy-recovering cylinder (15) and the brake motor (82), the hydraulic booster/limiter being controlled by the pressure of the fluid generated in the master cylinder (48).

Abstract: A pressure stabilization valve is provided for a vehicle wheel brake with a self actuated auxiliary presssure. The valve modifies the output of the auxiliary pressure to make it proportional with the pressure of a primary pressure source for actuating the brakes.

Abstract: A vehicle wheel braking system activated by a master cylinder is provided including a rotor connected to a vehicle wheel, a bracket having a position fixed with respect to the rotor, and a caliper slidably mounted with respect to the bracket in a plane generally perpendicular to the rotor rotational axis. A first hydraulic cylinder activated by the master cylinder is connected with the caliper. The first hydraulic cylinder has a piston for frictionally engaging the rotor to retrain rotation thereof. A second hydraulic cylinder is positioned between the caliper and the bracket. The second hydraulic cylinder has a piston that is pressurized by a reaction force experienced between the caliper and the bracket when the first hydraulic cylinder is activated. A third hydraulic cylinder is fluidly connected with the second hydraulic cylinder to receive pressure therefrom. The third hydraulic cylinder has a piston to frictionally engage the rotor to retrain rotation thereof.

Abstract: A mechanical arrangement to provide power assistance for the application of vehicle brakes with a positive shut-off of power assistance immediately upon release of the brake control by the user. The shut-off is achieved mechanically by providing pressure relief from the power assist pressure chamber by connecting a pressure relief channel between the power assist chamber and the brake fluid reservoir or by disconnecting the power piston in the power assist chamber from the main piston as soon as the brake control is released by the user.

Abstract: A disk brake system employing a caliper support bracket pivotally mounted about the axis of a first disk which is coupled with a hydraulic cylinder. The hydraulic cylinder in turn drives a second caliper assembly on a second disk. The hydraulic cylinder driven by the caliper support bracket is aligned with the plane of the disk. A bell crank may be employed in alignment with the disk to couple the caliper support bracket and the hydraulic cylinder together.

Abstract: An anti dive device for a motorcycle having a front wheel supported by front forks, each fork having an inner pipe and an outer case. The outer case of each front fork has two chambers filled with working fluid, at least two working fluid passages of different sizes between the two chambers, and elements to select which passage is open between the chambers. The device further has two brake assemblies and a hydraulic pressure generator. When braking torque is applied to the first brake assembly, a caliper bracket connected to the first brake assembly activates the hydraulic pressure generator, causing the activation of the second brake assembly as well as the selection of the smaller working fluid passage. Restricting the size of the passage causes the fork suspension to stiffen, thus preventing the motorcycle from nosediving upon braking.