Self-propelled mower having enhanced maneuverability
First Claim
1. A mower comprising:
- a plurality of wheel assemblies, each wheel assembly associated with a corresponding drivable pivotable wheel, a corresponding electrical steering motor for pivoting the drivable pivotable wheel about a steering axis, and a corresponding electrical drive motor for driving the drivable pivotable wheel about a wheel axis distinct from the steering axis, the electrical drive motor integrated into a hub of the drivable pivotable wheel;
a controller for controlling a steered direction of the corresponding drivable pivotable wheel via the corresponding electrical steering motor and application of electrical energy to the corresponding electrical drive motor consistent with maneuvering the mower in accordance with a movement mode in any desired direction along the ground;
a propulsion unit for rotating at least one cutting blade;
a mowing deck for housing the at least one cutting blade, the mowing deck having indentations to provide a spatial zone for the plurality of wheel assemblies; and
a frame for supporting the plurality of wheel assemblies, the propulsion unit, and the mowing deck.
1 Assignment
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Accused Products
Abstract
A frame of a mower supports wheel assemblies, a propulsion unit, and a mowing deck. Each wheel assembly is associated with a corresponding wheel, a corresponding electrical steering motor, and a corresponding electrical drive motor. A controller controls a direction of orientation of the corresponding wheel via the corresponding electrical steering motor. Further, the controller controls the application of electrical energy to the corresponding drive motor consistent with maneuverable movement of the mower. The propulsion unit is capable of rotating at least one cutting blade. A mowing deck houses the at least one cutting blade. The mowing deck has indentations to provide a spatial zone for the plurality of wheel assemblies.
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Citations
26 Claims
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1. A mower comprising:
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a plurality of wheel assemblies, each wheel assembly associated with a corresponding drivable pivotable wheel, a corresponding electrical steering motor for pivoting the drivable pivotable wheel about a steering axis, and a corresponding electrical drive motor for driving the drivable pivotable wheel about a wheel axis distinct from the steering axis, the electrical drive motor integrated into a hub of the drivable pivotable wheel; a controller for controlling a steered direction of the corresponding drivable pivotable wheel via the corresponding electrical steering motor and application of electrical energy to the corresponding electrical drive motor consistent with maneuvering the mower in accordance with a movement mode in any desired direction along the ground; a propulsion unit for rotating at least one cutting blade; a mowing deck for housing the at least one cutting blade, the mowing deck having indentations to provide a spatial zone for the plurality of wheel assemblies; and a frame for supporting the plurality of wheel assemblies, the propulsion unit, and the mowing deck. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for trimming vegetation with a mower, the method comprising:
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positioning a critical point of a mower over or adjacent to a reference axis of rotation of the mower; orienting each drivable pivotable wheel of the mower generally tangentially to one or more corresponding arcs about the reference axis of rotation via an electrical steering motor for pivoting the drivable pivotable wheel about a steering axis; and controlling the application of rotational mechanical energy to one or more of the drivable pivotable wheels via at least one electrical drive motor for driving a respective one of the drivable pivotable wheels about a wheel axis, distinct from the steering axis, to rotate the mower about the reference axis of rotation by a desired revolutional amount, the at least one electrical drive motor integrated into a hub of the respective drivable pivotable wheel. - View Dependent Claims (16, 17, 18, 19)
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20. A method for trimming vegetation with a mower, the method comprising:
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positioning a critical point of a mower over a reference arc; aligning a steered direction of orientation of drivable pivotable wheels to be generally tangential to respective arcs that are generally concentric with respect to the reference arc via an electrical steering motor for pivoting a respective one of the drivable pivotable wheels about a steering axis; and controlling an application of rotational mechanical energy to one or more of the drivable pivotable wheels via at least one electrical drive motor for driving a respective one of the drivable pivotable wheels about a wheel axis, distinct from the steering axis, to propel or rotate the mower about the object by a desired revolutional amount, the at least one electrical drive motor integrated into a hub of the respective drivable pivotable wheel. - View Dependent Claims (21, 22, 23, 24, 25, 26)
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Specification