B - Operations – Transporting – 62 – D
Patent
B - Operations, Transporting
62
D
342/32
B62D 5/32 (2006.01)
Patent
CA 1279714
Abstract of the Disclosure Steering Control System The steering system of some lightweight vehicles are electronically controlled and have a manually operated mechanical control as a backup. Such manual backup control would not be adequate for large earthmoving, construction and industrial type vehicles. The subject steering system includes an electrically controlled circuit actuated by rotation of a steering wheel for controlling a main pilot operated steering valve as the primary steering control. A hydraulic control circuit is also actuated by rotation of the steering wheel for controlling the same steering valve as a backup control when the electrically controlled circuit is not active. The hydraulic steering circuit is disabled when the electrically controlled circuit is activated. By using the same steering valve as an integral part of both circuits, the complexity and cost of the overall steering control system is reduced.
567229
Holloway Dwight Selwyn
Marsden Howard Arthur
Rytter Noel Joy
Caterpillar Inc.
Kirby Eades Gale Baker
LandOfFree
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