Abstract:
A drum brake assembly (10) for a vehicle includes a drum brake housing (12) and a brake assembly (14). The brake assembly includes an action cam (32) that is actuated by an associated cam shaft when it is desirable to decelerate the vehicle, a first reaction cam (40) matingly engaging the action cam (32), and a second reaction cam (46) matingly engaging the action cam (32). The first reaction cam (40) is actuated by the mating engagement based on actuation of the action cam (32). The second reaction cam (46) is actuated by the mating engagement based on actuation of the action cam (32).
Abstract:
A steering knuckle is provided for use in association with a vehicle steering assembly. The steering knuckle includes a knuckle body having a generally vertical face and an upper yolk arm having a generally vertical face. The generally vertical faces of the steering knuckle and the upper yolk arm are connected to each other. The generally vertical face of the upper yolk arm includes a camshaft bore extending therethrough and configured to receive a camshaft. The generally vertical face of the knuckle body may be welded to a spindle, with a portion of the spindle being cut away to allow for a complete circular weld between the knuckle body and the spindle.
Abstract:
A brake lever for a drum brake of a vehicle comprising a lever section for connection with a brake cylinder and a housing section for attachment to a splined S-cam shaft, which receives an adjustment device, the adjustment device comprising a first clutch (K1), the first clutch (K1) being biased by a first spring element (9) with a spring force and a second clutch (K2) formed as an one-way clutch with a number of teeth, the second clutch (K2) being biased by a second spring element with a spring force, in which the teeth of the second clutch (K2) are configured such that the spring force applied by the second spring element can shift the second clutch (K2) in its completely closed position against the torques which are induced in it by friction, as long as the first clutch (Kl) remains in an open position.
Abstract:
A vehicle brake monitoring system comprises at least one sensor for detecting relative rotational position of a brake camshaft during vehicle braking. The at least one sensor is unconnected to the camshaft for remotely detecting the position. Processing structure communicates with the at least one sensor, and processes the output of the at least one sensor to determine brake status.
Abstract:
A Self Activated Power Brake comprising a rotating disk coaxially fitted to a wheel, a housing (F) to hold brake shoes (G) of a brake in' a fixed position with respect to the rotating disk, a brake pedal system to transmit motion generated by hand or feet to at least one actuating pilot caliper (B), said pilot caliper is attached to at least one actuating mechanism, which actuates said brake shoes. Said actuating mechanism comprising at least one linkage mechanism (M) to link said pilot caliper to at least one transmitting means so that force from pilot caliper can be transmitted to said transmitting means said transmitting means to apply force on at least one engaging means at least one engaging means to engage said brake shoes to said rotating disk when force is applied. Said pilot caliper comprising at least one engaging brake shoe (P) and a movable holding frame.
Abstract:
A Self Activated Power Brake comprising a rotating disk coaxially fitted to a wheel, a housing to hold brake shoes of a brake in a fixed position with respect to the rotating disk, a brake pedal system to transmit motion generated by hand or feet to at least one actuating pilot caliper, said pilot caliper is attached to at least one actuating mechanism, which actuates said brake shoes. Said actuating mechanism comprising at least one linkage mechanism to link said pilot caliper to at least one transmitting means so that force from pilot caliper can be transmitted to said transmitting means said transmitting means to apply force on at least one engaging means at least one engaging means to engage said brake shoes to said rotating disk when force is applied. Said pilot caliper comprising at least one engaging brake shoe and a movable holding frame.
Abstract:
A slack adjuster (10) for a vehicle drum brake includes a pinion (90) that rotates about a worm axis whenever the slack adjuster pivots. Excess clearance is taken up upon commencement of the apply stroke, at an accelerated rate. This enables a larger amount of initial clearance to be built into the brake.
Abstract:
A brake lever for an automotive S-cam drum brake (1-3) has a worm wheel (12) for attachment to an S-cam shaft (5) and meshing with a worm screw (20) on a worm screw shaft (19), and a control arrangement (13, 14, 18, 25) including a control ring (25) rotatable on the worm screw shaft (19). In a force transmitting chain between the control ring and the worm screw shaft there is a clutch sleeve (26), a one-way clutch (28), a clutch ring (27) and a torque limiting clutch (32) biased into engagement by a strong spring (22) on the worm screw shaft, a control distance (A) in the form of a circumferential play being formed between the control ring and the clutch sleeve, which are biased towards a predetermined initial relative circumferential position by a spring (33).
Abstract:
A brake shoe (48, 50) for a drum brake (40) is provided that improves the direction of the brake actuating forces to reduce stress, improve efficiency and permit thicker brake linings. The brake shoe (48, 50) has a web (68) having first (74) and second (78) ends with the first end (74) configured for pivotally coupling to an associated brake spider (44). A brake table is supported on the web. The second end (78) of the web is configured to engage an associated cam follower (58, 60) that causes the brake shoe (48, 50) to move between positions of engagement and disengagement with an associated braking surface at either of first and second radially offset positions on the second end of the web such that the cam followers can engage two brake shoes (48, 50) in the brake at offset positions and improve the direction of the force vectors.