B - Operations – Transporting – 62 – D
Patent
B - Operations, Transporting
62
D
180/54
B62D 5/06 (2006.01) B62D 7/15 (2006.01)
Patent
CA 1106767
HYDRAULIC MASTER-SLAVE STEERING SYSTEM FOR A WIDE TRACK VEHICLE ABSTRACT OF THE DISCLOSURE An electro-hydraulic steering system is disclosed for a wide track steerable vehicle which changes the position of each steerable slave wheel to an optimum angle Control means, including electro-hydraulic steering means, are provided to cause the steerable slave wheels to turn relative to one another to assume and maintain an optimum turning radius and optimum turning relationship as the vehicle operator maneuvers the vehicle along a desired curved path of travel by hydraulically controlling a master steerable wheel. The system minimizes tire wear, reduces structural stresses in the vehicle, and maximizes traction during turning maneuvers. No conventional tie rods are required and the system may be implemented to permit two wheel steering, four wheel crab steering, and four or more wheel coordinated steering. The system uses a position sensor on a single hydraulically steered master wheel to produce a signal to control the posi- tioning of the slave wheels. The signal is digitized to produce a signal which, when compared to a position signal from a position sensor for each slave wheel, causes each slave wheel to assume an optimum position which is about perpendicular to the turning radius of the vehicle.
339436
Gowling Lafleur Henderson Llp
R. P. C. Corporation
LandOfFree
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