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US 2014/0271078 A1Published application
Lift arm structure with an articulated knee portion
OwnerRodney Kochinventor
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OwnerRodney Kochinventor
Estimating the term…
A lift arm structure for use on a power machine is disclosed. As disclosed, the lift arm structure includes an articulated knee portion pivotally attached to a main lift arm portion. The articulated knee portion is pivotally coupled to a distal end of the main lift arm portion at a bend angle. The bend angle can be fixed by a fixed length rod connected to the main lift arm portion and the articulated knee portion or adjustable through an actuator operably connected to the main lift arm portion and the articulated knee portion. In some applications, the actuator is a hydraulic cylinder connected to the lift arm portion and the articulated knee portion. A rod of the cylinder is extended and retracted to increase or decrease the bend angle of the articulated knee portion. The bend angle can be adjusted utilizing input from operator input devices or machine controlled utilizing pre-programmed bend angle parameters.
A lift arm assembly for attachment to a power machine having a frame and a front end and a rear end wherein the lift arm assembly includes a lift arm structure configured to be pivotally attached to the frame and movable between a lowered position and a raised position comprising:
A method comprising:
A kit for use with a lift arm structure for a power machine provided with an articulated knee portion pivotally connected to a main lift arm portion, the kit comprising:
Dependencies are inferred from the claim text.