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US 6,186,198 B1Granted
Method and apparatus for distributing hydraulic power in a feller-buncher
AssigneeCaterpillar Inc.
InventorRobert H. Holmes
Life of this patent
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AssigneeCaterpillar Inc.
InventorRobert H. Holmes
Estimating the term…
A feller-buncher includes a work tool having a hydraulically powered blade. The feller-buncher also includes a first axle having a number of first wheels attached thereto and a first hydraulic motor operable to rotate the first axle. The feller-buncher also includes a first hydraulic pump operable to supply pressurized hydraulic fluid to the first hydraulic motor and a second hydraulic pump operable to supply pressurized hydraulic fluid to both the work tool and the first hydraulic motor. Yet further, the feller-buncher includes a load sensing circuit for sensing a load on the work tool when the work tool is contacting a tree. The first hydraulic pump is configured to adjust hydraulic fluid flow to the first hydraulic motor based on the load on the work tool sensed by the load sensing circuit. A method for operating a feller-buncher is also disclosed.
A method of operating a feller-buncher which has (i) a work tool having a hydraulically powered blade, (ii) a first hydraulic motor operable to rotate a first axle having a number of first wheels attached thereto, (iii) a first hydraulic pump operable to supply pressurized hydraulic fluid to said first hydraulic motor, and (iv) a second hydraulic pump operable to supply pressurized hydraulic fluid to both said work tool and said first hydraulic motor, comprising the steps of:
A feller-buncher, comprising:
A method of operating feller-buncher having a saw blade for sawing a tree, comprising the steps of:
Dependencies are inferred from the claim text.