Abstract: A braking system utilizing a hydrodynamic brake has a control circuit that adjust the torque exerted by the hydrodynamic brake to adjust the deceleration of the axle on which the hydrodynamic brake is mounted toward a desired value of deceleration, which desired value may be zero.

Abstract: Strain gauge devices are mounted on the brake shoe carrying levers of an underground mine winding engine to sense induced strain and effective braking force when the brake is applied. A summation unit adds outputs from strain gauges. Indicators are operated by the result to indicate the effective braking force. A comparator compares the result with predetermined desired braking levels. Controls prevent release of other brake devices until the effective braking force exceeds a preselected magnitude.

Abstract: A vehicle braking system with regenerative braking and conventional braking, the system integrating the two braking forces to obtain a consistent total braking effort and brake pedal feel when the regenerative braking force decreases with the decrease in vehicle speed.

Abstract: A hydraulic parking brake with an electric actuator is provided for an automotive vehicle and is adapted for use with a hydraulic brake system in the vehicle. A manually operated switch engages an electric motor which drives a ram to increase hydraulic pressure to force the caliper pads or brake shoes of a brake into engagement with a brake disk or drum. The electric motor is equipped with associated limit switches, which disengage the motor following operation to prescribed limits. A torsion spring is part of the mechanism that activates the hydraulic master cylinder. This spring holds hydraulic pressure within a range of pressure values adequate to hold the brake and still avoid damage to the brake components. This ensures that the electric motor can travel far enough to activate the limit switches.

Abstract: The invention relates to control devices for electrical, hydraulic or other forms of decelerator for heavy vehicles. For the purpose of avoiding skidding of the wheels of the vehicles when empty, in the case of a false maneuvre by the driver, the devices comprise means for automatically neutralizing the brake when the deceleration of the vehicle exceeds a predetermined level of the order of 1-3 m/s.sup.2.

Abstract: An improved braking device for an electric motor incorporating a solenoid operated valve which meters air or fluid flow to a diaphragm, operable and effective to cause movement of a brake ring into and out of braking engagement with a companionate brake disc on a motor shaft.

Abstract: A brake apparatus is disclosed in which a rotary shaft coupled to a load to be rotated is rotatably supported by a plain bearing and a biasing device is located near the shaft to bias or move the shaft to the biasing device to applying braking force to the rotating load by the friction between the shaft and its bearing so as to stop the rotation of shaft and hence load.

Abstract: A braking system for automotive vehicles wherein a hydrodynamic brake normally furnishes the required braking torque in all effective positions of the brake pedal but its braking action can be supplemented or replaced by the braking force which is furnished by one or more fluid-operated mechanical friction brakes. The hydrodynamic brake is actuated only when the brake pedal is depressed sufficiently to insure that the pressure of fluid in the brake lines for the mechanical brakes at least equals that (application) pressure at which the pressurized fluid can overcome the friction-induced resistance of moving parts which serve to apply the mechanical brakes.

Abstract: In a solenoid-operated hydraulic brake pressure regulating valve assembly, a solenoid-operated valve and a pressure responsive valve are located in parallel connection between an inlet and an outlet, the solenoid-operated valve being closed when regenerative braking is in operation but open at all other times to provide communication between the inlet and the outlet, and the pressure-responsive valve being normally open but being adapted to close to isolate the inlet from the outlet after the solenoid-operated valve has closed and only after the pressure at the inlet has attained a predetermined value.

Abstract: Braking device for railroad bogie running at high speed, comprising a fixed part integrally connected to the frame of the bogie and a movable part suspended from the fixed part and adapted to be vertically displaced by suitable means towards a rail. The movable part is provided at its lower face with a series of electromagnets arranged above the rail. The series of electromagnets is flanked at each of its sides with a braking shoe adapted to be applied on the rail at the moment of braking in such a way that the electromagnets be placed at a relatively small distance from the rail. Means are provided for controlling the position of the braking shows as a function of the wearing of the shoe.