Load sensing proportioner with proportioner delay

Details Load sensing proportioner with proportioner delay Load sensing proportioner with proportioner delay

1977-06-29

1978-09-05

Halvosa, George E. A.

Fluid-pressure and analogous brake systems

Multiple fluid-receiving devices

Multiple motors

188349, B60T 800, B60T 818

Patent

active

041114957

ABSTRACT:
A brake actuating pressure proportioning valve is positioned in a vehicle rear brake circuit. The valve is sensitive to vehicle load to change the rear brake pressure point at which proportioning begins. The valve is also sensitive to front brake circuit pressure. If a significant decrease of front brake circuit pressure occurs, a delay piston is moved to follow the proportioner piston to a predetermined extent. In this condition the delay piston keeps the proportioner from operating in a proportioning mode, permitting full rear brake circuit pressure to be delivered without proportioning action. The delay piston is spring loaded to permit a significant pressure delay in proportioning action before it is moved toward its original position with increasing rear brake circuit pressure.

REFERENCES:
patent: 3329471 (1967-07-01), Oberthur
patent: 3362758 (1968-01-01), Goerke et al.
patent: 3467440 (1969-09-01), Strien
patent: 3733106 (1973-05-01), Rike et al.
patent: 3804468 (1974-04-01), Ishikawa et al.

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