Hydraulic brake force amplifier

Details Hydraulic brake force amplifier Hydraulic brake force amplifier

1980-10-17

1982-11-02

Reger, Duane A.

Fluid-pressure and analogous brake systems

Motorman's valves

Multiple motors

303 9, B60T 1124

Patent

active

043570550

ABSTRACT:
A hydraulic brake force amplifier is proposed, which has a control valve actuatable via a travel-imparting spring which directs the exertion of pressure medium from a supply source as an auxiliary force.
The travel-imparting spring disposed subsequent to the brake pedal provides sensitive response by the control valve. If the auxiliary force fails, the action of the travel-imparting spring is precluded, so that pedal travel is not used unnecessarily.
In order to effect this preclusion, a barrier piston is used, which is exposed on one side to the force of a spring and on the other side to a varying pressure, so that it does not seize due to corrosion and always remains in a functionally ready condition.
The combination of the brake force amplifier with an anti-wheel-lock apparatus is possible.
The hydraulic brake force amplifier is preferably applicable in vehicle braking systems for passenger cars and light trucks.

REFERENCES:
patent: 3672729 (1972-06-01), Blakey
patent: 3927915 (1975-12-01), Adachi
patent: 4015881 (1977-04-01), Adachi
patent: 4286826 (1981-09-01), Leiber

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