B - Operations – Transporting – 62 – D
Patent
B - Operations, Transporting
62
D
280/110
B62D 53/08 (2006.01) B62D 13/04 (2006.01) B62D 53/04 (2006.01)
Patent
CA 1143406
ABSTRACT OF THE DISCLOSURE The invention provides a self-steering converter dolly that in operation is releasably connected to the rear of a forward vehicle, such as a tractor-trailer combination, the dolly supporting the front end of a towed rearward vehicle, such as a second or "pup" trailer, via a fifth wheel connection and so that the vehicles are in tandem. The connecting means between the dolly frame and the forward vehicle frame consist of two transversely-spaced connectors that permit free pitching movement between the two frames but without substantial rolling or yawing movements between the two frames. The wheels of the dolly are mounted for steering and are urged to the neutral or straight-ahead position by a centering device. Means for releasably connecting the dolly and the forward vehicle for the required movement may comprise two transversely-spaced upwardly opening loop members on the dolly each engagable by a respective hook member on the frame of the forward vehicle.
411442
Auto Steering Trailers Limited
Hirons & Rogers
LandOfFree
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