Fluid-pressure and analogous brake systems – Inertia control
Patent
1976-03-29
1977-09-13
Halvosa, George E. A.
Fluid-pressure and analogous brake systems
Inertia control
60551, 60581, B60T 818
Patent
active
040477657
ABSTRACT:
A hydraulic braking system is provided for automatically apportioning braking of the wheels of a vehicle in accordance with the load on respective wheels. A plurality of brake control assemblies each dedicated to one of the wheels of the vehicle are coupled to produce braking of the corresponding wheel upon activation of the brake pedal. The degree of actuation of each brake control assembly is controlled by an element which senses load differences between all wheels on the vehicle (including load differences between wheels on either side of the vehicle and between front and rear wheels), and adjusts the degree of actuation of the corresponding brake control assembly accordingly. In an illustrative embodiment each brake control assembly includes a brake control cylinder having a piston movably disposed therein. The pistons are coupled to the brake pedal so as to be maximally advanced into the brake control cylinder when a maximum brake force is applied. The load sensing device is a pendulum which is mounted for displacement along the length and width of the vehicle from a predefined normal position. The pendulum is coupled to each of the pistons so that, in its normal position, all pistons are equally displaced within their corresponding cylinders so that, when a force is applied to the brake pedal, all wheels receive an equal braking force. In operation, when the wheels of the vehicle have unequal loads, such as on turns, the pendulum is displaced from its normal position and causes the various pistons to be displaced by different amounts in their corresponding cylinders. Thus, when a force is applied to the brake pedal, the braking force is apportioned unequally among the wheels and in proportion to the load on each wheel.
REFERENCES:
patent: 2807337 (1957-09-01), Starling
patent: 2867299 (1959-01-01), Jankauskas
patent: 2940797 (1960-06-01), Abell
patent: 2953413 (1960-09-01), Jankauskas
patent: 3035869 (1962-05-01), Francia
patent: 3707845 (1973-01-01), Mitton
Halvosa George E. A.
Tex-Trans, Inc.
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