Vehicle brake pressure proportioning valve

Details Vehicle brake pressure proportioning valve Vehicle brake pressure proportioning valve

1986-06-09

1987-10-27

Reger, Duane A.

Fluid-pressure and analogous brake systems

Multiple fluid-receiving devices

Multiple motors

B60T 826

Patent

active

047025298

ABSTRACT:
A vehicle brake pressure proportioning valve in which a stepped plunger in a stepped bore shuttles in first and second opposite directions when inlet hydraulic pressure from a master cylinder increases to a predetermined value. The aforesaid shuttling causes a ball valve, in which the ball is loaded by a spring, to close and open a bore through the plunger leading to an outlet to the brake so that during the shuttling the outlet brake pressure increases at a lower rate than the inlet pressure. Eventually the increasing inlet pressure attains another predetermined value sufficient to hold the ball valve closed against the spring loading so that the ball blocks the bore no matter which direction the plunger moves and thus the brake pressure cannot be increased any further.

REFERENCES:
patent: 3245221 (1966-04-01), James et al.
patent: 3412555 (1968-11-01), Lewis
patent: 3623776 (1971-11-01), Wellman
patent: 3727990 (1973-04-01), Vogt
patent: 3795424 (1974-03-01), Lewis

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