Compound steering system for endless-track vehicles

Motor vehicles – Steering by driving – Auxiliary steering motor

Patent

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Details

747205, B62D 1116

Patent

active

039660052

ABSTRACT:
The driven sprockets of a pair of endless tracks on opposite sides of a vehicle are coupled with an engine by way of a hydraulic torque converter and a reversible transmission, the latter including two differential-gear sets with secondary inputs which can be rotated in mutually opposite directions by a steering unit comprising a mechanical and a hydraulic power train linked by two cascaded planetary-gear sets. The hydraulic power train receives torque directly from the engine whereas the mechanical power train is driven by the output of the torque converter to provide intensified steering action when, on downhill driving, the turbine of the converter outruns its impeller. The mechanical power train includes a pair of reversing clutches nested within a pair of similar clutches of the reversible transmission.

REFERENCES:
patent: 3373636 (1968-03-01), Livezey et al.
patent: 3534635 (1970-10-01), Polak

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