Governing device for a spring brake actuator

Details Governing device for a spring brake actuator Governing device for a spring brake actuator

1977-10-11

1980-10-28

Hershkovitz, Abraham

Motors: expansible chamber type

With motive fluid valve

Pilot valve

91517, 92 29, F15B 1108

Patent

active

042300215

ABSTRACT:
A spring brake actuator has a quick release clutch for deactivating the brake in absence of fluid pressure and a governing device operating the clutch in response to the relative pressures prevailing at the service brake and spring brake cylinders. The governing device comprises a biased pilot valve and a signal valve which permit alternate operation of the brake release clutch manually or automatically.

REFERENCES:
patent: 3188916 (1965-06-01), Beatty
patent: 3255676 (1966-06-01), Berg
patent: 3359869 (1967-12-01), Avrea
patent: 3893552 (1975-07-01), Dahl
patent: 4014579 (1977-03-01), Dubois
patent: 4063491 (1977-12-01), Roger

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