B - Operations – Transporting – 60 – G
Patent
B - Operations, Transporting
60
G
B60G 17/016 (2006.01) E02F 3/40 (2006.01)
Patent
CA 2638085
A working machine includes a body and an axle which is mounted so as to be moveable relative to the body, the axle carrying at or towards each end, a ground engaging wheel by means of which the machine can travel over the ground, the machine including a speed sensor sensitive to the machine ground speed, and there being a hydraulic control system including at least one control actuator connected between the body and the axle for controlling movement of the axle relative to the body, and the hydraulic system further including at least one control valve which is operable to restrict fluid flow occurring as a result of the control actuator extending or retracting in response to axle movements relative to the body, depending upon the signal provided by the speed sensor, wherein the control valve is an electrically operated control valve, operated proportionally by a valve controller which responds to changes in machine speed, by adjusting the restriction to fluid flow so as to permit more fluid flow as the machine speed increases.
Ford Kevin William
North Alexander
Borden Ladner Gervais Llp
J.c.bamford Excavators Limited
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