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US 11,991,952 B2Granted
Walk-behind electric gardening device
AssigneeTechtronic Cordless GP
InventorKoon For Chung
Life of this patent
Estimating the term…
Abstract
A walk-behind electric gardening device, comprising: a base unit arranged to move on a surface; a handle assembly connected to the base unit; a tool connected to the base unit for performing gardening operation; a first drive unit operable to propel the base unit; a second drive unit operable to drive the tool; and a switch assembly operable by a user to selectively activate and deactivate the first drive unit.
Claims13
A walk-behind electric gardening device, comprising:
- a base unit arranged to move on a surface;
- a handle assembly connected to the base unit;
- a tool connected to the base unit for performing gardening operation;
- a first electric drive unit operable to propel the base unit;
- a second electric drive unit operable to drive the tool;
- a sensing unit including one or both of:
- a motion sensor arranged to detect motion or orientation of the base unit;
- and
- a user-input sensor arranged to detect an input applied by the user on the handle assembly;
- a controller, operably connected with the sensing unit and the first electric drive unit, for controlling operation of the first electric drive unit based on input received from the sensing unit;
- a switch assembly operable by a user to selectively activate or deactivate the first electric drive unit, the switch assembly further operable by a user to selectively control the first electric drive unit in response to detection of motion or orientation of the base unit by the motion sensor,
- wherein the switch assembly further includes:
- a mode change switch configured to switch between
- an automatic control mode in which the first electric drive unit is controlled using the input from the sensing unit when the electric gardening device is in the automatic control mode, and
- a manual control mode in which the first electric drive unit is controlled manually by the user through the switch assembly without using the input from the sensing unit.
12 more elements
A walk-behind electric gardening device, comprising:
- a base unit arranged to move on a surface;
- a handle assembly connected to the base unit;
- a tool connected to the base unit for performing gardening operation;
- a first electric drive unit operable to propel the base unit;
- a second electric drive unit operable to drive the tool;
- a switch assembly is operable by a user to selectively activate and deactivate the first electric drive unit;
- a sensing unit including one or both of:
- a motion sensor arranged to detect motion or orientation of the base unit;
- and
- a user-input sensor arranged to detect an input applied by the user on the handle assembly;
- and
- a controller, operably connected with the sensing unit and the first electric drive unit, configured to control operation of the first electric drive unit based on input received from the sensing unit, the input received from the sensing unit including the input from the user-input sensor involving actuation of the switch assembly to move the base unit on the surface in response to the input applied by the user on the handle assembly;
- a movement detector for detecting actual speed of movement of the base unit;
- and
- wherein the controller is further arranged to control the operation of the first electric drive unit based on input from the movement detector.
12 more elements
Dependencies are inferred from the claim text.