Land vehicles – Wheeled – Articulated vehicle
Patent
1976-09-13
1978-08-15
Pekar, John A.
Land vehicles
Wheeled
Articulated vehicle
280476R, 280492, B62D 5306
Patent
active
041067916
ABSTRACT:
A semi-trailer is connected to an agricultural-type tractor by means of a coupling dolly. The coupling dolly has a chassis which is supported by wheels at its rear end and is connected to a weight transfer hitch at its front end. The semi-trailer is connected to the dolly by means of a universal coupling supported between the ends of the dolly chassis and having mutually intersecting rearwardly disposed pitching, rolling and yawing axes. The weight transfer hitch is pivotally connected to the tractor for articulation about a horizontal forwardly disposed pitching axis extending transversely of the tractor, between the axes of the front and rear wheels of the tractor and below the level of the axis of the rear wheels of the tractor. The weight transfer hitch also has bearing means, disposed to the rear of the horizontal forwardly disposed pitching axis, for accommodating rolling and yawing articulation between the dolly and the tractor, the bearing means provided for yawing articulation being disposed on an axis which passes through the bearing means provided for rolling articulation.
REFERENCES:
patent: 1590582 (1926-06-01), Johnson
patent: 2496515 (1950-02-01), Bayes
patent: 2919928 (1960-01-01), Hoffer
patent: 3620551 (1971-11-01), Brown
LandOfFree
Coupling dolly does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Coupling dolly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coupling dolly will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1431153