Patents by Inventor Toshinari Yamaoka

Toshinari Yamaoka has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • GRASS TRIMMER
    Publication number: 20200178462
    Abstract: A grass trimmer has a main body and a trimming device. The main body has an operating device and a power source. The trimming device has a grass cutting assembly having a cutting member and a power head for rotating the cutting member. The power head has a housing, a rotor assembly and a stator assembly. The housing is formed integrally and defines an accommodation chamber. The rotor assembly is received in the accommodation chamber of the housing and has a rotor sleeve which rotates around an axis. The stator assembly is at least partly received in the rotor sleeve. The rotor assembly further has two or more magnetic pieces disposed at an inner wall of the rotor sleeve. The stator assembly has a stator support and a coil assembly. The stator support includes a mounting portion and a supporting portion. The coil assembly is disposed in the rotor sleeve by the supporting portion.
    Type: Application
    Filed: February 18, 2020
    Publication date: June 11, 2020
    Inventors: Toshinari Yamaoka, Fangjie Nie, Zheng Geng
  • GRASS TRIMMING HEAD AND GRASS TRIMMER HAVING THE SAME
    Publication number: 20200170182
    Abstract: A grass trimming head includes a housing assembly and a spool. The housing assembly is formed with a housing cavity and an outer aperture for allowing a cutting line to be inserted from an outside of the housing assembly into the housing cavity. At least a portion of the spool is arranged inside the housing cavity, and the spool is rotatable with respect to the housing assembly about a central axis. The spool is formed with an inner aperture for allowing the cutting line to be inserted into the spool or a clamping portion configured to fix the cutting line.
    Type: Application
    Filed: February 4, 2020
    Publication date: June 4, 2020
    Inventors: Jianpeng Guo, Toshinari Yamaoka, Fangjie Nie, Qi Zhang, Zongjing Li, Fei Wang, Lanxi Xu
  • CUTTING HEAD OF A GRASS TRIMMER
    Publication number: 20200154634
    Abstract: A cutting head for use with a cutting tool, such as a grass trimmer. The cutting head has a housing, a line spool and a supporting cap. One end of the housing is coupled to an end of a motor output shaft and another end has an opening. A line spool is disposed in the housing and rotates along with the housing. At least one end of a line wound around the line spool extends out of the housing. The supporting cap is rotatably disposed at the end of the line spool adjacent to the opening and is exposed to an exterior of the housing through the opening.
    Type: Application
    Filed: January 22, 2020
    Publication date: May 21, 2020
    Inventors: Toshinari Yamaoka, Hanzheng Li
  • LAWNCARE APPARATUS
    Publication number: 20200120867
    Abstract: A lawncare apparatus includes a main body, multiple wheels supporting the main body, a cutting blade disposed in the main body, a motor driving the cutting blade, and an operating arm connected to the first end of the main body. The distance in the horizontal direction between the axial central line of the cylindrical gripping portion of the operating arm and the axes of the elongated handle of the main body along the length direction is less than 5 cm. Because of the structure mate relationship between the operating arm and the cylindrical gripping portion, the operator feels more comfortable during the transporting process, the volume of lawncare apparatus during transporting is reduced and the convenience of transporting is improved.
    Type: Application
    Filed: December 20, 2019
    Publication date: April 23, 2020
    Inventors: Toshinari Yamaoka, Fangjie Nie, Haishen Xu, Xiandian Shao
  • HANDHELD BLOWER
    Publication number: 20200096006
    Abstract: A handheld blower includes a fan for generating an air flow, a motor for driving the fan to rotate about a central axis, a battery pack for supplying power to the motor, an air duct portion including an air duct, the air duct extending long the central axis, a coupling portion for coupling with the battery pack, and a connection portion for connecting the air duct portion with the coupling portion. The fan is received in the air duct. The air duct includes an air duct inlet and an air duct outlet which are respectively located at the two ends of the air duct. The air duct inlet is located between the air duct outlet and the coupling portion. The connection portion is provided with an air intake space located between the air duct inlet and the coupling portion. The air intake space is opened in a radial direction of the central axis.
    Type: Application
    Filed: November 25, 2019
    Publication date: March 26, 2020
    Inventors: Xiandian Shao, Toshinari Yamaoka, Fangjie Nie, Jianpeng Guo
  • GARDENING TOOL, PARTICULARLY A MOWER
    Publication number: 20200060091
    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.
    Type: Application
    Filed: October 31, 2019
    Publication date: February 27, 2020
    Inventors: Toshinari Yamaoka, Fangjie Nie, Haishen Xu, Xiandian Shao
  • GRASS TRIMMER, OPERATING METHOD THEREOF AND CONTROL METHOD THEREOF
    Publication number: 20200029497
    Abstract: A grass trimmer includes a trimming head, a driving device for driving the trimming head to rotate so as to cut vegetation and an operating device for a user to operate so as to control the driving device. The trimming head includes a spool and a line holding member, the spool is used to wind a cutting line, and the line holding member is formed with a line holding structure. The driving device includes a motor. The grass trimmer has an auto-winding mode. In the auto-winding mode, the motor drives at least one of the spool and the line holding member to make the spool and the line holding member rotate relatively so that the cutting line is wound on the spool automatically.
    Type: Application
    Filed: October 2, 2019
    Publication date: January 30, 2020
    Applicants: Nanjing Chervon Industry Co., Ltd., Chervon (HK) Limited
    Inventors: Jianpeng GUO, Maohui LI, Fangjie NIE, Toshinari YAMAOKA
  • Grass Trimmer
    Publication number: 20200008348
    Abstract: A grass trimmer includes a trimming head, a driving device for driving the trimming head to rotate so as to cut vegetation and an operating device for a user to operate so as to control the driving device. The trimming head includes a spool and a line holding member, the spool is used to wind a cutting line, and the line holding member is formed with a line holding structure. The driving device includes a motor. The grass trimmer has an auto-winding mode. In the auto-winding mode, the motor drives at least one of the spool and the line holding member to make the spool and the line holding member rotate relatively so that the cutting line is wound on the spool automatically.
    Type: Application
    Filed: September 20, 2019
    Publication date: January 9, 2020
    Applicants: Nanjing Chervon Industry Co., Ltd., Chervon (HK) Limited
    Inventors: Jianpeng GUO, Maohui LI, Fangjie NIE, Toshinari YAMAOKA
  • Lawncare apparatus
    Patent number: 10524420
    Abstract: A lawncare apparatus includes a main body, multiple wheels supporting the main body, a cutting blade disposed in the main body, a motor driving the cutting blade, and an operating arm connected to the first end of the main body. The distance in the horizontal direction between the axial central line of the cylindrical gripping portion of the operating arm and the axes of the elongated handle of the main body along the length direction is less than 5 cm. Because of the structure mate relationship between the operating arm and the cylindrical gripping portion, the operator feels more comfortable during the transporting process, the volume of lawncare apparatus during transporting is reduced and the convenience of transporting is improved.
    Type: Grant
    Filed: August 16, 2016
    Date of Patent: January 7, 2020
    Assignee: CHERVON (HK) LIMITED
    Inventors: Toshinari Yamaoka, Fangjie Nie, Haishen Xu, Xiandian Shao
  • SNOW THROWER
    Publication number: 20190390424
    Abstract: A snow thrower includes a motor, an auger driven by the motor to rotate, a handle device for a user to operate, an auger housing for containing the auger and a frame for connecting the handle device and the auger housing. The auger housing is made of at least two different materials.
    Type: Application
    Filed: September 3, 2019
    Publication date: December 26, 2019
    Inventors: Xiangqing Fu, Feng Yuan, Keqiong Zhong, Qian Liu, Li Li, Toshinari Yamaoka, Fangjie Nie, Liang Chen
  • Lawncare apparatus
    Patent number: 10492365
    Abstract: A lawncare apparatus includes a main body, multiple wheels supporting the main body, a cutting blade disposed in the main body, a motor driving the cutting blade, an operating arm connected to the first end of the main body, and a transmission assembly. The transmission assembly is configured to prevent the switching device from being controlled in a mechanical way by the operation assembly or/and turning on the motor when the first member is moved towards the main body to a predetermined position relative to the second member.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: December 3, 2019
    Assignee: CHERVON (HK) LIMITED
    Inventors: Toshinari Yamaoka, Fangjie Nie, Haishen Xu, Xiandian Shao
  • Lawn care apparatus
    Patent number: 10485176
    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.
    Type: Grant
    Filed: May 8, 2019
    Date of Patent: November 26, 2019
    Assignee: Chervon (HK) Limited
    Inventors: Toshinari Yamaoka, Fangjie Nie, Haishen Xu, Xiandian Shao
  • Lawncare apparatus
    Patent number: 10485169
    Abstract: A lawncare apparatus includes a main body, multiple wheels supporting the main body, a cutting blade disposed in the main body, a motor driving the cutting blade, an operating arm connected to the first end of the main body, and a transmission assembly. The transmission assembly is configured to prevent the switching device from being controlled in a mechanical way by the operation assembly or/and turning on the motor when the first member is moved towards the main body to a predetermined position relative to the second member.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: November 26, 2019
    Assignee: CHERVON (HK) LIMITED
    Inventors: Toshinari Yamaoka, Fangjie Nie, Haishen Xu, Xiandian Shao
  • Handheld blower
    Patent number: 10487850
    Abstract: A handheld blower includes a fan for generating an air flow, a motor for driving the fan to rotate about a central axis, a battery pack for supplying power to the motor, an air duct portion including an air duct, the air duct extending long the central axis, a coupling portion for coupling with the battery pack, and a connection portion for connecting the air duct portion with the coupling portion. The fan is received in the air duct. The air duct includes an air duct inlet and an air duct outlet which are respectively located at the two ends of the air duct. The air duct inlet is located between the air duct outlet and the coupling portion. The connection portion is provided with an air intake space located between the air duct inlet and the coupling portion. The air intake space is opened in a radial direction of the central axis.
    Type: Grant
    Filed: April 2, 2019
    Date of Patent: November 26, 2019
    Assignee: Chevron (HK) Limited
    Inventors: Xiandian Shao, Toshinari Yamaoka, Fangjie Nie, Jianpeng Guo
  • Gardening tool
    Patent number: 10477772
    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.
    Type: Grant
    Filed: March 2, 2018
    Date of Patent: November 19, 2019
    Assignee: Chervon (HK) Limited
    Inventors: Toshinari Yamaoka, Fangjie Nie, Haishen Xu, Xiandian Shao
  • Grass trimmer, operating method thereof and control method thereof
    Patent number: 10440882
    Abstract: A grass trimmer includes a trimming head, a driving device for driving the trimming head to rotate so as to cut vegetation and an operating device for a user to operate so as to control the driving device. The trimming head includes a spool and a line holding member, the spool is used to wind a cutting line, and the line holding member is formed with a line holding structure. The driving device includes a motor. The grass trimmer has an auto-winding mode. In the auto-winding mode, the motor drives at least one of the spool and the line holding member to make the spool and the line holding member rotate relatively so that the cutting line is wound on the spool automatically.
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: October 15, 2019
    Assignees: Nanjing Chervon Industry Co., LTD., Chervon (HK) Limited
    Inventors: Jianpeng Guo, Maohui Li, Fangjie Nie, Toshinari Yamaoka
  • Hedge trimmer
    Patent number: 10433491
    Abstract: A hedge trimmer includes a first housing with a first handle, a second housing with a second handle, a transmission mechanism combined to the first housing, a trimming blade for being driven by the transmission mechanism to carry out a shearing motion, an electric motor combined to the first housing and for driving the transmission mechanism, and a battery pack combined to the second housing and for supplying power to the electric motor. The first and second housings respectively include first and second rotation connection parts for making them be connected and rotatable around a rotation axis. The second housing has first and second rotation positions when being rotated with respect to the first housing. A plane perpendicular to the rotation axis is obliquely intersected with a plane perpendicular to a longitudinal axis of the trimming blade.
    Type: Grant
    Filed: January 4, 2018
    Date of Patent: October 8, 2019
    Assignee: CHERVON (HK) LIMITED
    Inventors: Li Li, Fangjie Nie, Toshinari Yamaoka
  • Lawn mower and hand pushed power tool
    Patent number: 10433478
    Abstract: A lawn mower includes a cutting element for cutting grass, a motor for driving the cutting element to rotate, a housing for containing the motor and a handle device for a user to control the lawn mower. The handle device includes a handle including a gripping portion for the user to grip and a connection portion substantially extending along a direction of a first line, and a first operating element for the user to operate. The first operating element is capable of rotating about a first axis relative to the handle. The first axis is substantially parallel to the first line.
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: October 8, 2019
    Assignee: CHERVON (HK) LIMITED
    Inventors: Derek Smith, Toshinari Yamaoka, Qian Liu
  • SELF-PROPELLED MACHINE
    Publication number: 20190299795
    Abstract: A self-propelled machine includes a drive motor, a handle having two grips, an electromechanical converting device, and a speed adjusting element configured to move relative to the handle to adjust a rotational speed of the drive motor and configured to be operated by a user when the user holds one of the two grips with a single hand. The speed adjusting element is disposed between the two grips. The electromechanical converting device is configured to convert a positional change of the speed adjusting element into an electrical signal for adjusting the rotational speed of the drive motor. The speed adjusting element is movable between a first position and a second position. The rotational speed of the drive motor when the speed adjusting element is in the first position is greater than the rotational speed of the drive motor when the speed adjusting element is in the second position.
    Type: Application
    Filed: June 20, 2019
    Publication date: October 3, 2019
    Inventors: Yu Yan, Toshinari Yamaoka, Fangjie Nie, Haishen Xu, Yangzi Liu
  • Snowthrower
    Patent number: 10428479
    Abstract: A snowthrower includes a motor, an auger driven by the motor to rotate, a handle device for a user to operate, an auger housing for containing the auger and a frame for connecting the handle device and the auger housing. The auger housing is made of at least two different materials.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: October 1, 2019
    Assignee: CHERVON (HK) LIMITED
    Inventors: Xiangqing Fu, Feng Yuan, Keqiong Zhong, Qian Liu, Li Li, Toshinari Yamaoka, Fangjie Nie, Liang Chen