Rear spring actuated brake proportioner

Details Rear spring actuated brake proportioner Rear spring actuated brake proportioner

1984-12-26

1986-04-22

Butler, Douglas C.

Fluid-pressure and analogous brake systems

Load control

Responsive to fluid pressure spring

188195, 267 54R, B60T 818

Patent

active

045837899

ABSTRACT:
An improved braking system, particularly for a vehicle such as a truck, subject to relatively large differences in loading, including a force responsive proportioning valve inserted between a master brake cylinder and the rear brakes for increasing the rear braking effort relative to the front as the load on the vehicle increases. A spring position follower device is operably connected to the force input of the proportioning valve to respond to angular movements of the pivotally mounted end portion of the rear leaf spring whereby an increased input force is transmitted to the proportioning valve as the spring flexes due to vehicle load increases.

REFERENCES:
patent: 4012079 (1977-03-01), Takeshita
patent: 4445725 (1984-05-01), Sivulka

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