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AssigneeHUSCO International, Inc.
InventorsKeith A. Tabor, Joseph L. Pfaff, Dwight B. Stephenson
Estimating the term…
When a swinging boom driven by a hydraulic cylinder stops, inertia causes continued motion of the boom which increases pressure in a chamber of the hydraulic cylinder. Eventually that pressure reaches a level which causes the boom to reverse direction. Then pressure in an opposite cylinder chamber increases until reaching a level that causes the boom movement to reverse again. This oscillation continues until the motion is dampened by other forces acting on the boom. As a result, an operator has difficulty in properly positioning the boom. To reduce this oscillating effect, a sensor detects when the cylinder chamber pressure increases above a given magnitude and then a determination is made when the rate of change of that pressure is less than a defined threshold. Upon that occurrence, a control value is opened to relieve the pressure in that cylinder chamber.
A method for controlling movement of a member that is driven by a hydraulic actuator connected to a valve assembly through which fluid flows, the method comprising:
A method for controlling movement of a member that is driven by a hydraulic actuator having a first chamber and a second chamber, the method comprising:
A method for controlling movement of a member that is driven by a hydraulic actuator having a first chamber and a second chamber, the method comprising:
Dependencies are inferred from the claim text.