Hydraulic system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 1, 2010
Grant Date -
Jan 25, 2007
app pub date -
Jun 1, 2004
filing date -
Jul 11, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Disclosed is a hydraulic steering system (100) for a vehicle, especially a mobile working machine, comprising at least two steering cylinders (1, 2) within which two cylinder pistons (3, 4) can be displaced, and a first hydraulic pump (14) that can be adjusted regarding the swept volume. The position or the direction of displacement of the cylinder pistons (3, 4) in the steering cylinders (3, 4) defines the steering angle or the steering direction of the steerable vehicle wheels relative to a body (5) of the vehicle. The displaceable cylinder pistons (3, 4) divide the associated steering cylinder (1, 2) into two respective pressure chambers (6 and 7, 8 and 9). The first connection (46) of the adjustable hydraulic pump (14) is joined to one of the pressure chambers (6 or 7, 8 or 9) of the two steering cylinders (1, 2) according to the steering direction while the second connection (15) thereof is joined to the other respective pressure chamber (6 or 7, 8 or 9) of the two steering cylinders (1, 2) in a closed circuit.
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