Abstract: In a method for applying a parking brake of a vehicle depending on the roadway conditions, at least one electromechanical braking system has a parking brake and an operational brake function. An operational brake force is produced on each wheel to slow the vehicle down to a standstill. A parking brake force is generated on at least two wheels of the vehicle. The parking brake forces have an amount that corresponds to the total of the previous parking brake forces applied to all of the wheels and subsequently the stopping of the vehicle is tesste. When the vehicle is maintained in the stop position, the amount of the parking brake force on the at least two wheels is reduced and simultaneously, the service brake forces that are reduced by a certain amount corresponding to the parking brake forces are built up at least on the other wheels.

Abstract: An electrically controlled brake includes a rotatable first mechanical system and a second mechanical system that is stationary or fixed. The two systems have friction surfaces/parts that can be made to come in engagement with each other, providing a braking effect, and be withdrawn from each other releasing the braking effect. In the second system, windings can be wound around two braking shoes made from soft magnetic material so that an electric current flowing in the windings affects magnetic fluxes through the soft magnetic parts to move at least one thereof. The movement is in a direction that affects the effective width of an air gap in the closed main magnetic path. The electric current gives attraction forces over the air gap which tend to move the braking shoes to reduce the length of the air gap. A spring that e.g.

Abstract: An automatic shoe clearance adjustment apparatus having a ratchet wheel 124b and a driving member 127 comprising a pawl section 127f making a ratchet engagement with the ratchet wheel 124b and an arcuate leaf spring section 127e developing a resilient force for adjusting the automatic shoe clearance adjustment apparatus. The leaf spring section 127e is made of bi-metal. When the temperature of the leaf spring section 127e exceeds the predetermined degree, the arcuate leaf spring section 127e thermo-deflects so as to weaken the resilient force, thereby the automatic shoe clearance adjusting operation is suspended.

Abstract: An electromechanical brake assembly 10 having a pair of selectively movable and dissimilar self energization wedge members 24, 26 which are respectively and independently controlled by motors 30, 34, and which have respectively dissimilar angles of inclination 60, 62, thereby providing a controllably varying amount of self energization.

Abstract: It is an object of this invention to provide a drum brake device which solves a problem of decreasing the strength of a back plate near an anchor block and reduces potential damage to the parking brake cable. A pivot lever 60 is pivotally mounted on one brake shoe 20. Upper and lower portions of the pivot lever functionally engage with the other brake shoe 30 via struts 81, 70. A parking brake actuator 90 which pivotally supports on the upper strut 81 and activates upon an activation of a parking brake is arranged to be adjacent to a service brake actuator which activates upon an activation of a service brake. Preferably an operational part of the parking brake actuator is projected out from the brake back plate.

Abstract: A bike brake has two stages of braking, including a brake drum, a drum cap, plural brake bands and a stopping structure in the brake drum and the drum cap. The stopping structure has a separator, an interactive device, plural springs, plural stopping devices able to be pushed upward and outward by the springs. In case the stopping structure is rotated to alter its angle, the stopping devices are moved upward and outward by the springs to move the stopping devices outward push the brake bands to contact and rub against the inner wall of the brake drum to perform a first stage of baking. If the stopping structure continues to alter the angle larger and larger, the springs shrink and the stopping devices also move down to rest on the stop plates to perform a second stage of strong braking.

Abstract: Counter braking force acting on a secondary shoe is input to one end portion of a control lever supported with an anchor pin vertically provided on a backing plate in such a manner that the control lever is capable of swinging. An inner end portion in the radial direction of the control lever engages with a strut for pressing a primary shoe against a brake drum. Pressing force A with which the strut is pressing the primary shoe against the brake drum is drastically reduced when braking force, that is, the counter braking force increases and slightly reduced when the braking force, that is, the counter braking force decreases, whereby an increase or a decrease in the braking force is made automatically controllable.

Abstract: Device for positioning a rotating body movable about an axis in relation to a stator body including a magnetic bearing and a locking/releasing device. The locking/releasing device embodies a plurality of clamps with pads adapted to radially grip a shaft of the rotating body. The clamps are articulated on the stator body about axial pins spaced from the rotational axis and evenly distributed in an angular manner about the rotational axis, and can be pivotally moved about the axis, by a moving control part between a released configuration in which the gripping pads are at a maximum distance from the axis and a locked configuration in which the pads are at a minimum distance from the axis suitable for inducing radial clamping of the shaft.

Abstract: An air balancing hoist is described having an axially movable drum reel supported on a ball nut and screw with a piston defining a pressure chamber containing regulated air pressure acting on one end of the drum reel to counter the unwinding force of a load supported on a cable wound on the drum reel. A centrifugal brake retards drum rotation when there is a sudden release of the load tending to cause too rapid wind up of the cable by the regulated air pressure applied on the piston.

Abstract: An internal shoe-drum brake includes a first actuator disposed between one pair of adjacent brake shoe ends, a strut extending between the shoes adjacent the actuator, an abutment device disposed between the other pair of adjacent shoe ends, and a mechanical second actuator. Lever arms are pivotally engaged with the strut at spaced locations and are operatively associated with the second actuator. Rollers carried by the lever arms engage the brake shoes at intermediate locations lengthwise thereof so that actuating forces from the second actuator are applied to the shoes at said intermediate locations to initiate duo-servo operation of the brake.

Abstract: An overrunning wheel brake has a brake drum, two brake shoes including a first brake shoe which, upon forward movement will be leading, and a second brake shoe, a bracket member provided with at least one guiding part arranged to support the first brake shoe, a tensioning member formed as an eccentric cam expanding the bracket in direction toward the drum and acting in running up direction of the first shoe, at least one incline provided on the first brake shoe in the region of its contact with the guiding part of the bracket member and forming relative to an outer curvature of the first brake shoe a wedge surface tapering in the running-up direction of the first brake shoe, an abutment member, and a displaceable pin arranged so that the brake shoes abut via the pin against one another and against the abutment member, and the tensioning member abutting with its free end against the second brake shoe via the pin.

Abstract: A drum brake assembly includes a pair of brake shoes (16, 18) which are movable by a hydraulic actuator (14) to a braking position. A parking brake lever assembly (24) is operable to also move the pair of brake shoes to the braking position. An anchor assembly (40) is attached to a backing plate (12) and is engageable with the pair of brake shoes to either absorb braking torque during a service brake application, or impart movement from one brake shoe to the other during a parking brake application. The anchor assembly includes a connecting member (44) engageable with the pair of brake shoes and rotatable in response to operation of the parking brake lever assembly to a released position on the anchor assembly (40).

Abstract: A wheel brake, particularly an overrunning wheel brake comprising a brake drum, first and second brake shoes movable in forward and rearward directions, amplifying formations arranged to cooperate with the first brake shoe and to amplify a force with which the first brake shoe is pressed against the brake drum, a displacing element for displacing the first brake shoe in the forward direction and thereby pressing the same against the brake drum with amplified pressure force, and an urging projection provided on the first brake shoe and arranged so that when the first brake shoe is displaced in the rearward direction, the projection displaces the second brake shoe which acts upon the amplifying formations and thereby the first brake shoe is again pressed against the brake drum with the amplified pressure force.

Abstract: A spring-applied, electrically released drum brake which is self-energizing in one direction, and partially deenergizing in the other direction. Regardless of braking direction, the brake shoes are applied with substantially zero force, with the braking force being increased to decelerate and stop the drum within predetermined jerk and deceleration constraints.

Abstract: An internal shoe-drum brake in which arcuate shoes carrying friction linings for engagement with a rotatable drum are mounted on a stationary back-plate and the shoes are separated at one end to bring them into engagement with the drum by a service actuator for normal service braking and at the other end by a mechanical parking actuator. Abutments are provided at or adjacent to the mechanical parking actuator to take the braking loads when the brake is applied by the service actuator, and means are provided in or adjacent to the service actuator for transmitting servo braking forces from one shoe to the other when the brake is applied by the mechanical parking actuator. An actuating member is operative to actuate the parking actuator to release energy stored therein thereby applying continuously to the shoes a force to urge them into engagement with the drum irrespective of the initial position of the shoes when the actuating member is operated.