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

Claim 2:
3. 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 on the turntable and pivotally connected to a compensator bar mounted on the pivot frame, and a pair of hydraulic cylinders connecting the pivot frame and the wheel group;
operating the dolly in an automatic steering mode by causing the hydraulic cylinders to be locked at a fixed length; and
rotating the turntable in one direction to actuate a turn such that a rear end of the stinger bar moves a front end of the compensator bar towards the outside of the turn thereby causing the pivot frame to rotate in an opposite direction whereby to cause the hydraulic cylinders to rotate the wheel group in said opposite direction.