Load sensing proportioning valve including inertia responsive el

Details Load sensing proportioning valve including inertia responsive el Load sensing proportioning valve including inertia responsive el

1974-01-21

1976-05-04

Blix, Trygve M.

Fluid-pressure and analogous brake systems

Inertia control

188195, 188349, 303 6C, 303 22R, B60T 816

Patent

active

039543072

ABSTRACT:
A load sensitive proportioning valve for an automotive vehicle having a source of hydraulic fluid and front and rear hydraulically actuated brake systems, the proportioning valve being operable to modulate the brake pressure in one of the brake systems to provide for a reduced brake effect at the rear wheels relative to that at the front wheels to compensate for the weight transfer during braking, the valve including a modulating piston movable between positions opening and closing a flow path from the fluid source and the one brake system a first bias producing element for providing a force to move the piston element as a function of the magnitude of the deceleration of the vehicle, and a second bias producing element providing a force to move the piston in response to the fluid pressure of the one system and the modulated fluid pressure of the proportioning valve, whereby the modulating effect of the proportioning valve compensates for variations in loading of the vehicle.

REFERENCES:
patent: 3143379 (1964-08-01), Eksergian
patent: 3276822 (1966-10-01), Lister et al.
patent: 3463556 (1969-08-01), Kersting
patent: 3582153 (1971-06-01), Pitcher
patent: 3825303 (1974-07-01), Yabuta
patent: 3881786 (1975-05-01), Stelzer et al.

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