IP Library › Granted Patent US 12,532,807
Granted Patent B2
US 12,532,807 · App. 17/570,032 · Granted Jan 27, 2026

Handle and safety control device for a mower

Inventors: Toshinari Yamaoka (Nanjing, CN); Fangjie Nie (Nanjing, CN); Haishen Xu (Nanjing, CN); Xiandian Shao (Nanjing, CN)
Assignee: Chervon (HK) Limited
A01D34/824A01D34/67A01D34/6806A01D34/828A01D69/02A01D69/10A01D2034/6843A01D2101/00
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Quick Facts
Patent No.
US 12,532,807
App. No.
17/570,032
Granted
Jan 27, 2026
Kind
B2
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.

Claims (38)

1 . A mower, comprising:

a main body comprising a motor configured to drive a mowing member;

a plurality of wheels supporting the main body;

a handle connected to the main body and comprising a first telescopic member and a second telescopic member, the first telescopic member slidable relative to the second telescopic member to a designated position, the handle further comprising an operation assembly operable by a user to control the motor; and

a control device configured to detect a position of the first telescopic member relative to the second telescopic member and to send a first signal to allow the motor to be activated when the operation assembly is operated by the user and the first telescopic member slides to the designated position,

wherein when the motor is in a stopped state, and the first telescopic member slides to a position other than the designated position, the control device sends a second signal to the motor to prevent the motor from being activated when the operation assembly is operated by the user.

2 . The mower according to claim 1 , wherein the mower further comprises a power supply circuit configured to power the motor, and the control device comprises a switch connected to the power supply circuit to send the first signal and the second signal.

3 . The mower according to claim 2 , wherein the switch is a contact switch.

4 . The mower according to claim 2 , wherein the switch is a Hall switch.

5 . The mower according to claim 2 , wherein the switch is coupled to at least one of the first telescopic member or the second telescopic member.

6 . The mower according to claim 1 , wherein the control device comprises a contact switch and at least a portion of the contact switch is coupled to at least one of the first telescopic member or the second telescopic member.

7 . The mower according to claim 1 , wherein the control device comprises a signal source device and at least a portion of the signal source device is coupled to at least one of the first telescopic member or the second telescopic member.

8 . The mower according to claim 1 , wherein the mower further comprises a power supply circuit configured to power the motor, and the control device comprises a signal source device for sending the first signal and the second signal to the power supply circuit.

9 . A mower, comprising:

a main body comprising a motor configured to drive a mowing member;

a plurality of wheels supporting the main body;

a handle connected to the main body and comprising a first telescopic member and a second telescopic member, the first telescopic member being configured to slide relative to the second telescopic member to a designated position, the handle further comprising an operation assembly configured to be operated by a user to control the motor; and

a control device configured to detect a position of the first telescopic member relative to the second telescopic member and to send a control signal to cause the motor to be activated when the operation assembly is operated by the user and the first telescopic member is in the designated position,

when the motor is in a stopped state, and the first telescopic member slides to a position other than the designated position, the control device sends a signal to the motor to prevent the motor from being activated when the operation assembly is operated by a user.

10 . A mower, comprising:

a main body comprising a motor configured to drive a mowing member;

a plurality of wheels supporting the main body;

a handle connected to the main body and comprising a first member and a second member, the first member slidable relative to the second member to a designated position, the handle further comprising an operation assembly configured to be operated by a user to control the motor;

a control device configured to detect a position of the first member relative to the second member and to send a control signal to prevent the motor from being activated when the motor is in a stopped state and the operation assembly is operated by the user and the first member is in a position other than the designated position.

11 . A mower, comprising:

a main body comprising a motor configured to drive a mowing member;

a plurality of wheels supporting the main body;

a handle connected to the main body and comprising a first telescopic member and a second telescopic member, the first telescopic member being configured to be capable of sliding relative to the second telescopic member to a designated position, the handle further comprising an operation assembly configured to be operated by a user to control the motor;

a control device configured to detect a position of the first telescopic member relative to the second telescopic member and capable of sending a signal to control the motor;

wherein when the motor is in a stopped state and the first telescopic member slides to a position other than the designated position, the control device sends the signal to control the motor and prevent the motor from being activate by operation of the operation assembly.

12 . The mower according to claim 11 , wherein the mower further comprises a power supply circuit configured to power the motor, and the control device comprises a switch connected to the power supply circuit to send the signal.

13 . The mower according to claim 12 , wherein the switch is a contact switch.

14 . The mower according to claim 12 , wherein the switch is a Hall switch.

15 . The mower according to claim 12 , wherein the switch is coupled to at least one of the first telescopic member or the second telescopic member.

16 . The mower according to claim 11 , wherein the control device comprises a contact switch and at least a portion of the contact switch coupled to at least one of the first telescopic member or the second telescopic member.

17 . The mower according to claim 11 , wherein the control device comprises a signal source device and at least a portion of the signal source device coupled to at least one of the first telescopic member or the second telescopic member.

18 . The mower according to claim 11 , wherein the mower further comprises a power supply circuit configured to power the motor, and the control device comprises a signal source device for sending the signal to the power supply circuit.

19 . The mower according to claim 11 , wherein the control device comprises a switch configured to be triggered, and the control device allows the motor to be activated by the operation assembly when the switch is triggered.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 7, 2022
From: YAMAOKA, TOSHINARI; NIE, FANGJIE; XU, HAISHEN; SHAO, XIANDIAN
To: CHERVON (HK) LIMITED
Reel/Frame 058573/0209 →
Priority Claims (4)
CN 201210387914.9 · Oct 15, 2012 · national
CN 201220602040.X · May 3, 2013 · national
CN 201310468919.9 · Oct 10, 2013 · national
CN 201410167041.X · Apr 23, 2014 · national
Continuity (9)
Continuation 16824858 · Mar 20, 2020
Continuation 16670821 · Oct 31, 2019
Continuation 16406337 · May 8, 2019
Continuation 15910282 · Mar 2, 2018
Continuation 15250476 · Aug 29, 2016
Continuation 14511490 · Oct 10, 2014
Continuation In Part 15238276 · Aug 16, 2016
Continuation 14048158 · Oct 8, 2013
Related Publication 20220124982A1 · Apr 28, 2022
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