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US 2023/0413725 A1Published application
Power tool having a variable height or speed
AssigneeTechtronic Cordless GP
InventorsWilliam E. Colber, Dayu Feng, James C. Ferrell, Jonathan R. Feldkamp, Dongyu Wang
Life of this patent
Estimating the term…
Abstract
A power tool may have features for varying height or speed. The power tool may include a base chassis, one or more wheels mounted to the base chassis, and a handle frame attached to the base chassis. A slider assembly or support rail may further be included with the power tool to, for instance, aid in varying speed or height.
Claims21
-20. (canceled)
A lawnmower comprising:
- a base chassis;
- a first wheel;
- a height-adjustment assembly disposed between the base chassis and the first wheel to selectively raise and lower the base chassis, wherein the height-adjustment assembly comprises:
- a wheel bracket comprising a plurality of bracket slots, wherein the wheel bracket is rotatable about a height-adjustment axis, and wherein each of the plurality of bracket slots is spaced apart circumferentially about the height-adjustment axis;
- a selection rail adjustably coupled to the plurality of bracket slots;
- and
- an adjustment handle comprising a trigger coupled to the selection rail, wherein actuating the trigger releases the selection rail from one of the plurality of bracket slots to permit rotation of the wheel bracket when the adjustment handle is moved in a predetermined roto-translational motion.
4 more elements
A height-adjustment assembly for a lawnmower, the height-adjustment assembly comprising:
- a wheel bracket comprising a plurality of bracket slots, wherein the wheel bracket is rotatable about a height-adjustment axis, and wherein each of the plurality of bracket slots is spaced apart circumferentially about the height-adjustment axis;
- a selection rail adjustably coupled to the plurality of bracket slots;
- and
- an adjustment handle comprising a trigger coupled to the selection rail, wherein actuating the trigger releases the selection rail from one of the plurality of bracket slots to permit rotation of the wheel bracket when the adjustment handle is moved in a predetermined roto-translational motion,
- wherein the height-adjustment assembly is configured to be rotationally coupled to a base chassis of the lawnmower and rotatable relative to the base chassis about the height-adjustment axis.
2 more elements
A method of adjusting a height of a base chassis of a lawnmower, the method comprising:
- with the base chassis at a first height, actuating a trigger of a height-adjustment assembly to unlock a selection rail from a first bracket slot of a wheel bracket, wherein the wheel bracket rotationally supports a first wheel;
- moving an adjustable handle in a predetermined roto-translation motion to align the selection rail with a second bracket slot of the wheel bracket, the second bracket slot being different than the first bracket slot;
- releasing the trigger to engage the selection rail with the second bracket slot and lock the base chassis at a second height different from the first height.
Dependencies are inferred from the claim text.