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US 2025/0084609 A1Published application
Lift arm arrangements for power machines
OwnerBrent Durkininventor
Life of this patent
Estimating the term…
Abstract
A lift arm structure for a power machine with a frame can include a lift arm and an electrical lift actuator. The lift arm can extend from a rear end to a front end configured to support an implement and can define at least one lift arm pocket. An electrical tilt actuator can be secured at a first end within the at least one lift arm pocket and can be extendable relative to the first end to change an attitude of the implement.
Claims20
A power machine comprising:
- a frame that supports one or more tractive elements;
- and
- a lift arm structure supported by the frame, the lift arm structure including:
- a lift arm extending along a side of the frame to define at least one lift arm pocket, the lift arm including a rear beam portion movably secured to the frame, a middle beam portion extending forward, in a fully lowered configuration, from the rear beam portion to a knee, and a front beam portion extending downward, in the fully lowered configuration, from the knee to an implement interface configured to support an implement or implement carrier;
- and
- an electrical tilt actuator to provide motive power to change an attitude of the implement or implement carrier, the electric tilt actuator including an electrical motor and an extender powered by the electrical motor to extend and retract relative to an extension direction to change the attitude of the implement or implement carrier, the electrical motor being secured at a base end within the at least one lift arm pocket and being fully enclosed by the at least one lift arm pocket around a perimeter of the base end.
3 more elements
A lift arm structure for a power machine with a frame, the lift arm structure comprising:
- a lift arm configured to be movably secured to the frame to extend along a lateral side of the frame, the lift arm defining at least one lift arm pocket;
- an implement interface at a distal end of the lift arm, configured to movably secure an implement or implement carrier to the lift arm;
- and
- an electrical tilt actuator secured to the lift arm, the electrical tilt actuator including an electrical motor having an actuator base end secured to the lift arm, and an extender configured to be powered by the electrical motor to extend and retract relative to an extension direction to change the attitude of the implement or implement carrier when the implement or implement carrier is movably secured to the implement interface,
- the at least one lift arm pocket shielding a perimeter of the actuator base end along one or more of:
- a top side, a bottom side, and a laterally outboard side of the actuator base end;
- or
- a front side, a rear side, and the laterally outboard side of the actuator base end.
5 more elements
A lift arm structure for a power machine having a frame, the lift arm structure comprising:
- a lift arm extending along a lateral side of the power machine from a rear end to a front end configured to support an implement, the lift arm defining at least one lift arm pocket;
- and
- an electrical tilt actuator secured at a first end within the at least one lift arm pocket and extendable relative to the first end to change an attitude of the implement, the electrical tilt actuator including an electrical motor that is surrounded by the at least one lift arm pocket around a perimeter of the electrical motor.
Dependencies are inferred from the claim text.