Land vehicles – Wheeled – Articulated vehicle
Patent
1992-02-21
1994-09-20
Huppert, Michael S.
Land vehicles
Wheeled
Articulated vehicle
2804551, B60D 122
Patent
active
053483316
ABSTRACT:
A stabilizer for a multi-trailer rig has a cylinder assembly including a cylinder A and a piston rod E pivotally mounted between a front trailer on one end and a wheeled dolly at H exerting a force which at all times is in a direction tending to bring the dolly into alignment and thereby bring a rear trailer which follows the dolly into alignment. A pair of such cylinder assemblies may be provided with each having a central stop member B carried internally of a cylinder with pistons C and D on each respective side for effectively moving to pull or to push until such action may be reversed following engagement of a piston with the central stop member. Exerting control over alignment of the dolly stabilizes the trailers and continues to exert a force to maintain alignment, yet permits turning. A locking clutch member I may be manually fixed to limit movement of the cylinder and piston rod thereby preventing the dolly from coming out of alignment during backing. An anti-jackknifing apparatus includes a stop J pivoted downwardly from the trailer into the slot of the tractor fifth wheel.
REFERENCES:
patent: 2726097 (1955-12-01), Darrough
patent: 3663039 (1972-05-01), Morgan
patent: 3815939 (1974-06-01), Pettay
patent: 3955655 (1976-05-01), Pornin
patent: 4262920 (1981-04-01), Mett et al.
patent: 4645226 (1987-02-01), Gustavsson et al.
patent: 4700966 (1987-10-01), Hawkins et al.
patent: 4902030 (1990-02-01), Andre
Bailey Ralph
Delta Estates, Inc.
Huppert Michael S.
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