Tractor-trailer control apparatus

Details Tractor-trailer control apparatus Tractor-trailer control apparatus

1988-03-29

1989-05-02

Marmor, Charles A.

Land vehicles

Wheeled

Articulated vehicle

2804551, B62D 600, B62D 5308

Patent

active

048261980

ABSTRACT:
Anti-jackknifing apparatus beneath the fifth wheel of a tractor-trailer vehicle includes a control ring carried rotably by the tractor and coupled to the trailer by interfering vertical projections directed from each of the tractor and the control ring. A sector plate, shiftable between angular stops, is mounted on the tractor co-axial with the control ring and carries three angularly spaced apart braking devices for selectively gripping the control ring. The central one of the braking devices grips the control ring in response to application of the vehicle service brakes while a control valve causes the other braking devices to grip the control ring in response to angular shifting of the sector plate.

REFERENCES:
patent: 3874699 (1975-04-01), Hayes et al.

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