Patent ID: 11952036
Assignee: ASPEN CUSTOM TRAILERS INC.
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 1:
2. A method of steering a heavy haul trailer dolly comprising:
providing a heavy haul trailer dolly comprising a main frame, a turntable mounted on the main frame, a wheel group pivotally connected the main frame, a pivot frame pivotally connected to the main frame located between the turntable and the wheel group, a stinger bar mounted centrally across said turntable and an end of said stinger bar pivotally connected to a compensator bar mounted centrally within the pivot frame and being extendable through the pivot frame, and configured such that when said dolly is not being turned, the stinger bar and the compensator bar are aligned with a longitudinal center line of said dolly, and a pair of hydraulic cylinders each of said cylinders being connected to the pivot frame and to the wheel group;
and;
operating the dolly in an automatic steering mode by causing the hydraulic cylinders to be locked at a fixed length.