Backhoe with multi-movement capabilities
AssigneeCaterpillar Tractor Co.
InventorRobert N. Stedman
Life of this patent
Estimating the term…
Abstract
A backhoe comprises a support member pivotally mounted thereon for horizontal swinging movements relative thereto by actuating means operatively interconnected between the support member and frame. A boom is pivotally mounted on the support member for horizontal pivotal movements relative thereto by a first hydraulic swing motor and a dipper stick assembly is pivotally mounted on said boom for vertical pivotal movements relative thereto by a hydraulic cylinder pivotally interconnected therebetween. The dipper stick assembly comprises a support bracket having a dipper stick rotatably mounted therein and a dipper bucket mounted on a lower end of the dipper stick. A second hydraulic swing motor is operatively interconnected between the dipper stick and the bracket for selectively rotating the dipper stick thereon.
Claims26
A backhoe comprising
- a frame,
- a support member,
- first pivot means pivotally mounting said support member on said frame for horizontal pivotal movements relative thereto,
- first actuating means operatively interconnected between said support member and said frame for selectively pivoting said support member relative thereto,
- a boom assembly,
- second pivot means pivotally mounting a lower end of said boom assembly on said support member for horizontal pivotal movements relative thereto,
- second actuating means operatively interconnected between said boom assembly and said support member for selectively swinging said boom assembly relative thereto,
- a dipper stick assembly, including a support bracket and a dipper stick having a clevis, defining a pair of spaced arms, rotatably mounted on said support bracket,
- third pivot means pivotally mounting said support bracket on an upper end of said boom assembly for vertical pivotal movements relative thereto,
- third actuating means operatively interconnected between said support bracket and said boom assembly for selectively pivoting said dipper stick assembly relative thereto,
- fourth actuating means operatively interconnected between said dipper stick and said bracket for selectively rotating said dipper stick thereon, and
- a work tool mounted on a lower end of said dipper stick.
Dependencies are inferred from the claim text.