Constant speed control for electric greens mower
First Claim
Patent Images
1. An electrically powered mower comprising:
- a frame;
a plurality of wheels to support the frame;
an electric motor operably connected to drive the plurality of wheels;
a power source operatively connected to the electric motor to provide power to the electric motor;
a plurality of cutting units mounted on the frame; and
a controller operably connected to the electric motor, the controller automatically making adjustments to motor currents or voltages as needed in order for the electrically powered mower to maintain a constant speed on non-level terrain.
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Accused Products
Abstract
An electric mower having constant speed control. The mower is powered by a battery and a controller connected to the electric motor. The controller monitors mower operation and ensures that a constant speed is maintained while mowing and transporting even on inclines and declines.
196 Citations
22 Claims
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1. An electrically powered mower comprising:
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a frame; a plurality of wheels to support the frame; an electric motor operably connected to drive the plurality of wheels; a power source operatively connected to the electric motor to provide power to the electric motor; a plurality of cutting units mounted on the frame; and a controller operably connected to the electric motor, the controller automatically making adjustments to motor currents or voltages as needed in order for the electrically powered mower to maintain a constant speed on non-level terrain. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 19, 20, 21, 22)
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17. An electrically powered mower comprising:
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a frame; a plurality of wheels to support the frame; an electric motor operably connected to drive the plurality of wheels; a power source operatively connected to the electric motor to provide power to the electric motor; a plurality of cutting units mounted on the frame; a controller operably connected to the electric motor, the controller automatically making adjustments to motor currents or voltages as needed in order for the electrically powered mower to maintain a constant speed on non-level terrain; and a control shifter operably connected to the controller, the control shifter to relay operator commands to the controller relating to the speed and direction of the electrically powered mower.
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18. An electrically powered mower comprising:
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a frame; a plurality of wheels to support the frame; an electric motor operably connected to drive the plurality of wheels; a power source operatively connected to the electric motor to provide power to the electric motor; a plurality of cutting units mounted on the frame; a controller operably connected to the electric motor, the controller automatically making adjustments to motor currents or voltages as needed in order for the electrically powered mower to maintain a constant speed on non-level terrain; an interlock system operatively connected to the controller, the interlock system to monitor the presence of a plurality of preconditions to operation and prevent power being sent to the controller until all of the plurality of preconditions to operation are present; and a control shifter operably connected to the controller, the control shifter to relay operator commands to the controller relating to the speed and direction of the electrically powered mower.
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Specification