Brake feedback valve

Details Brake feedback valve Brake feedback valve

1993-02-04

1994-11-08

Oberleitner, Robert J.

Fluid-pressure and analogous brake systems

Motorman's valves

303 56, 91434, B60T 1504

Patent

active

053621387

ABSTRACT:
A brake apply control system for a vehicle. The control system has a selectively operable mechanical brake apply portion and a selectively operable hydraulic brake apply portion. The mechanical brake apply portion includes an operator linkage for connecting the operator with a mechanical brake apply mechanism and a hydraulic piston and valve combination for providing a hydraulic feedback force to the operator. The hydraulic brake apply portion includes a source of hydraulic pressure, a brake apply valve for supplying a selective brake signal of variable intensity in response to operator input, a conduit system which connects the source of hydraulic pressure to the hydraulic piston and valve combination and which communicates the brake signal to the hydraulic piston and valve combination. The hydraulic piston and valve combination responds not only to the source of hydraulic pressure to provide a first feedback force to the operator, but also to the brake signal for providing a second feedback force to the operator that is proportional to the intensity of the brake signal.

REFERENCES:
patent: 2959450 (1960-11-01), Gladden et al.
patent: 3334548 (1967-08-01), van House
patent: 4422293 (1983-12-01), Ewald

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