Control system for an integral spring-loaded parking and service

Details Control system for an integral spring-loaded parking and service Control system for an integral spring-loaded parking and service

1975-08-18

1976-12-21

Reger, Duane A.

Fluid-pressure and analogous brake systems

Charging

Motor

188170, 303 14, B60T 712

Patent

active

039990753

ABSTRACT:
A control system for a spring-applied service brake which can also be used as a parking brake. Pressure from the vehicle hydraulic system is normally used to release the brakes. In the event of a loss of the primary pressure from the hydraulic system, the control system switches automatically to use of secondary pressure from the vehicle compressed air system to release the brakes, while maintaining the ability of the operator to apply the brakes by normal operation of the service and parking brake controls.

REFERENCES:
patent: 2871066 (1959-01-01), Pannier et al.
patent: 3547233 (1970-12-01), Girvan
patent: 3759357 (1973-09-01), Bianchetta

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