Control valving for a hydraulic retarder

Details Control valving for a hydraulic retarder Control valving for a hydraulic retarder

1988-06-27

1989-11-21

Butler, Douglas C.

Brakes

Internal-resistance motion retarder

Using a rotary-type fluid damper

60337, 192 4B, 188264R, 188296, F16D 5706, B60K 4120

Patent

active

048816256

ABSTRACT:
A control system for a hydraulic retarder includes an inlet regulator valve and an outlet regulator valve. The inlet regulator valve admits fluid to the retarder at a predetermined pressure. The outlet regulator valve prevents fluid flow from the retarder unless the main system pressure is greater than a predetermined value.

REFERENCES:
patent: 3592304 (1971-07-01), Thompson
patent: 3696893 (1972-10-01), Koivunen
patent: 3774734 (1973-11-01), Forster et al.
patent: 3774735 (1973-11-01), Hanke et al.
patent: 3931870 (1976-01-01), Memmer
patent: 3987874 (1976-10-01), Fuehrer et al.
patent: 3989127 (1976-11-01), Staudenmaier et al.
patent: 4324320 (1982-04-01), Spurlin et al.
patent: 4432442 (1984-02-01), Vogelsang

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