B - Operations – Transporting – 62 – D
Patent
B - Operations, Transporting
62
D
B62D 49/00 (2006.01) A01B 69/00 (2006.01) B60B 33/00 (2006.01) B60B 35/10 (2006.01) B62D 11/04 (2006.01)
Patent
CA 2450967
A hydrostatic agricultural tractor has front ground wheels mounted on the frame at fixed angles parallel to each other and parallel to a center line of the frame and rear ground wheels mounted on a respective castor, with each of the front ground wheels being driven by a respective drive motor which allows variable speed in both the first and second directions such that steering of the tractor is effected by a differential in speed between the front wheels with the rear wheels following the steering in a castoring action. A pair of damper cylinders is provided each connected between a bracket on a rear axle of the frame and a fever in the castor plane of the castor so as to provide a damping force tending to restrict rotation of the respective second wheel about the respective vertical pivot axis with the damping force at a maximum value when the rear wheels are parallel to the center line in either the forward or reverse directions.
Bergman Leonard
Dunn James Thomas
Schulz Henry Jerome
Battison Williams Dupuis
Macdon Industries Ltd.
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