Steering control system for dual path hydrostatic vehicle

Motor vehicles – Steering by driving – Independently operable drive motors

Patent

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Details

60395, 60420, 60486, 180 77H, B62D 1104, F15B 1800, F16H 3946, B60K 2300

Patent

active

041756282

ABSTRACT:
A steering control system is disclosed for use on a dual path, hydrostatic drive vehicle. The steering control system includes a steering signal generator, the steering signal representing commanded steering ratio and direction. The system senses vehicle direction and steering direction and generates an electrical switch signal having a first or second condition, depending upon which transmission must have its speed reduced to achieve the desired vehicle orientation. The steering signal and the main speed command signal are multiplied to generate a speed modification signal and an electrical switch transmits the modification signal to one transmission or the other depending upon whether the switch signal is in the first or second condition. The disclosed steering system permits use of a T-handle control, for both speed and steering, such that vehicle orientation may be maintained generally perpendicular to handle orientation for both forward and reverse vehicle travel.

REFERENCES:
patent: 3848690 (1974-11-01), Hawkins
patent: 3876020 (1975-04-01), Barsby
patent: 3914938 (1975-10-01), Cornell et al.

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