Fluid-pressure and analogous brake systems – Abs throttle control
Patent
1989-01-18
1990-09-04
Butler, Douglas C.
Fluid-pressure and analogous brake systems
Abs throttle control
188354, 188 16, 303 52, B60T 1124, B60T 1536, B62D 1108
Patent
active
049539175
ABSTRACT:
An off-road vehicle has ground supports on each side which can be simultaneously braked, or independently braked to aid in steering. A braking system includes a brake valve device which feeds high fluid pressure to a pair of reversing valves. The reversing valves deliver the high pressure to respective wheel brake cylinders disposed on opposite sides of the vehicle. The reversing valves and brake valve device are controlled by a common pedal which comprises separately or simultaneously actuable half-pedals. Each half-pedal actuates the brake valve device and a respective reversing valve such that when both half-pedals are depressed the system operates in a dual-sided braking mode, and when only one half-pedal is depressed the system operates in a braked-steering mode. The system can be shifted directly from the dual-sided braking mode to a brake-steering mode by simply releasing one of the half-pedals without having to first release all braking action.
REFERENCES:
patent: 3339986 (1967-09-01), Lowin et al.
patent: 3400788 (1968-09-01), Brace
patent: 3827765 (1974-08-01), Husted
patent: 3834769 (1974-09-01), Just
patent: 4125234 (1978-11-01), Tregre
patent: 4223954 (1980-09-01), Margetts
patent: 4505519 (1985-03-01), Muterel
Butler Douglas C.
Mannesmann Rexroth GmbH
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