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US 10,477,772 B2Granted
Gardening tool
AssigneeChervon (HK) Limited
InventorsToshinari Yamaoka, Fangjie Nie, Haishen Xu, Xiandian Shao
Life of this patent
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Abstract
A gardening tool, such as a mower, has a main body having an accessory, such as a mowing blade, and a motor for driving the accessory. A handle is rotatably connected to the main body. At least one operation assembly is associated with the handle for being operated by a user to control the motor when the handle is located in a predetermined position. A control system prevents the motor from being controlled by the operation assembly and halts the motor when the handle is located out of the predetermined position.
Claims18
A gardening tool, comprising:
- a main body;
- a plurality of wheels supporting the main body;
- a cutting blade disposed in the main body;
- a motor supported by the main body for driving the cutting blade;
- an operation assembly for being operated by a user to activate the motor;
- a handle rotatably connected to the main body and including two telescopic members slidably connected to each other;
- and
- a control device for sending a control signal to allow the motor to be activated by the operation assembly when one of the telescopic members is caused to be moved to a predetermined position relative to another one of the telescopic members and to prevent the motor from being activated by the operation assembly when the one of the telescopic members is caused to be moved away from the predetermined position relative to the another one of the telescopic members.
5 more elements
A lawn care apparatus, comprising:
- a main body;
- a plurality of wheels supporting the main body;
- a cutting blade disposed in the main body;
- a motor supported by the main body and drivingly connected to the cutting blade;
- a control circuit for controlling operation of the motor;
- an operating arm connected to the main body, the operating arm comprising an inner pipe and an outer pipe wherein the inner pipe is disposed at least in part within the outer pipe and moveable relative to the outer pipe in a direction that is towards the main body in response to the operating arm being subjected to a first force that is in the direction that is towards the main body;
- and
- a safety assembly for triggering the control circuit to cause the control circuit to disable operation of the motor, wherein the safety assembly is positioned between the outer pipe and the inner pipe such that the safety assembly is caused to trigger the control circuit when the inner pipe is moved towards the main body to a predetermined position relative to the outer pipe.
5 more elements
Dependencies are inferred from the claim text.