| 摘要 |
Power-assisted steering mechanism for a motor vehicle comprising a double-acting power-assist piston and cylinder means, a valve having a member movable to connect one side or the other of the power-assist piston and cylinder means with a source of fluid under pressure, and control means for controlling the movement of the movable valve member, the control means comprising a closed hydrostatic circuit which includes at least one positive displacement pump motor adapted for actuation by a manual steering control.
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