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).

  • Blower
    Patent number: 10405714
    Abstract: A blowing machine has a main machine where the main machine includes a housing, a motor and a fan with the housing having a main machine air channel in which the motor and the fan are at least partially accommodated. An airflow guiding assembly is attachable to the housing and has an air duct for guiding the airflow and an airflow guiding member for guiding a part of the airflow in the air duct to flow in a direction deflecting from the first axis.
    Type: Grant
    Filed: July 30, 2015
    Date of Patent: September 10, 2019
    Assignee: CHERVON (HK) LIMITED
    Inventors: Jianpeng Guo, Fangjie Nie, Xiandian Shao, Toshinari Yamaoka
  • GARDENING TOOL, PARTICULARLY A MOWER
    Publication number: 20190269073
    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: May 8, 2019
    Publication date: September 5, 2019
    Inventors: Toshinari Yamaoka, Fangjie Nie, Haishen Xu, Xiandian Shao
  • Gardening tool, particularly a grass trimmer
    Patent number: 10362731
    Abstract: A gardening tool such as a grass trimmer is provided with a tool head, a motor for driving the tool head, a front housing for accommodating the motor, a trigger switch for activating the motor, a trigger operable to control the trigger switch, a battery pack for providing electric energy to the motor, a circuit board for electrically connecting the motor to the battery pack, and a rear housing for accommodating the circuit board. The rear housing forms a housing chamber for accommodating the trigger switch, the circuit board, and wires between the circuit board and the trigger switch.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: July 30, 2019
    Assignee: CHERVON (HK) LIMITED
    Inventor: Toshinari Yamaoka
  • HANDHELD BLOWER
    Publication number: 20190226494
    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: April 2, 2019
    Publication date: July 25, 2019
    Inventors: Xiandian Shao, Toshinari Yamaoka, Fangjie Nie, Jianpeng Guo
  • GRASS TRIMMER
    Publication number: 20190216013
    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 use in controlling the driving device. The trimming head includes a spool and a line holding element 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 element to make the spool and the line holding element rotate relatively so that a trimming line is wound on the spool automatically.
    Type: Application
    Filed: March 25, 2019
    Publication date: July 18, 2019
    Inventors: Jianpeng Guo, Maohui Li, Fangjie Nie, Toshinari Yamaoka
  • Handheld electric tool
    Patent number: 10350743
    Abstract: A handheld electric tool includes a working device for performing a function of the handheld electric tool, a powering device for provide a driving force to the working device, and a connecting device for connecting the working device and powering device. The powering device includes: an electric motor, a power housing having an air inlet and an air outlet, a transmission mechanism for transmitting power generated by the electric motor and a circuit board for controlling the electric motor, a fan can be driven by the electric motor to provide an airflow which flows from the air inlet to the air outlet. The circuit board, the transmission mechanism and the electric motor are disposed between the air inlet and the air outlet such that the airflow flows through the circuit board, the transmission mechanism and the electric motor successively. The handheld electric tool has excellent cooling effect.
    Type: Grant
    Filed: September 7, 2016
    Date of Patent: July 16, 2019
    Assignee: CHERVON (HK) LIMITED
    Inventors: Huixing Fu, Fangjie Nie, Toshinari Yamaoka, Fangtian Deng
  • Blower
    Patent number: 10337526
    Abstract: A 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: May 5, 2016
    Date of Patent: July 2, 2019
    Assignee: CHERVON (HK) LIMITED
    Inventors: Xiandian Shao, Toshinari Yamaoka, Fangjie Nie, Jianpeng Guo
  • HANDHELD BLOWER
    Publication number: 20190191638
    Abstract: A handheld blower includes a housing having an air inlet and a duct assembly mounted in front of the air inlet, the duct assembly including a duct connected with the housing, a motor and a fan mounted in the duct, a battery, and a blowpipe connected to the housing by the duct assembly, the blowpipe defining a central axis in the length direction, and a handle arranged above the housing and the battery. The handle includes a gripping portion arranged on opposite sides of a plane in which the gravity center of the blower is located, and the plane is parallel to a central axis of the blowpipe and substantially perpendicular to a working ground. The gravity center of the handheld blower is adjacent to the gripping portion which enhances the handling comfort and reduces operator fatigue during long times of operation.
    Type: Application
    Filed: March 5, 2019
    Publication date: June 27, 2019
    Inventors: Toshinari Yamaoka, Xiandian Shao, Fangjie Nie, Jianpeng Guo
  • Handheld blower
    Patent number: 10264739
    Abstract: A handheld blower includes a housing having an air inlet and a duct assembly mounted in front of the air inlet, the duct assembly including a duct connected with the housing, a motor and a fan mounted in the duct, a battery, and a blowpipe connected to the housing by the duct assembly, the blowpipe defining a central axis in the length direction, and a handle arranged above the housing and the battery. The handle includes a gripping portion arranged on opposite sides of a plane in which the gravity center of the blower is located, and the plane is parallel to a central axis of the blowpipe and substantially perpendicular to a working ground. The gravity center of the handheld blower is adjacent to the gripping portion which enhances the handling comfort and reduces operator fatigue during long times of operation.
    Type: Grant
    Filed: July 13, 2018
    Date of Patent: April 23, 2019
    Assignee: Chervon (HK) Limited
    Inventors: Toshinari Yamaoka, Xiandian Shao, Fangjie Nie, Jianpeng Guo
  • Grass trimmer, operating method thereof and control method thereof
    Patent number: 10264725
    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 element, the spool is used to wind a trimming line, and the line holding element 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 or the line holding element to make the spool and the line holding element rotate relatively so that the trimming line is wound on the spool automatically.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: April 23, 2019
    Assignees: Nanjing Chervon Industry Co., Ltd., Chervon (HK) Limited
    Inventors: Jianpeng Guo, Maohui Li, Fangjie Nie, Toshinari Yamaoka
  • BACKPACK TOOL SYSTEM AND BACKPACK POWER SUPPLY APPARATUS THEREOF
    Publication number: 20190074489
    Abstract: A backpack tool system and a backpack power supply apparatus for use with an electric tool. The backpack power supply apparatus includes a battery pack for providing electric energy, a body for carrying the battery pack, and a wearable device connected to the body and wearable by a user to carry the body. The battery pack is detachably connected to the body. The body defines a plane and a height extending in a heightwise direction. The body is at least partially symmetrical about the plane. The wearable device includes a strap, which includes an upper end connected to an upper portion of the body. The upper end of the strap applies a force to the body when the user wears the wearable device. An included angle between a projection of a direction of the force on the plane and the heightwise direction is greater than or equal to 30 degrees and less than or equal to 50 degrees.
    Type: Application
    Filed: August 8, 2018
    Publication date: March 7, 2019
    Inventors: Toshinari Yamaoka, Kaichao Dai
  • POWER TOOL, LAWN MOWER, AND CONTROL METHOD THEREOF
    Publication number: 20190021223
    Abstract: The present invention discloses a power tool, a lawn mower, and a method for controlling a lawn mower. The lawn mower includes a blade, configured to cut grass; a chassis, configured to accommodate the blade; a front wheel connected to a front side of the chassis; a rear wheel connected to a rear side of the chassis; a motor at least configured to drive the rear wheel to rotate; a detection apparatus configured to detect a rotational speed of the front wheel; and a controller configured to enable the motor to decelerate when the rotational speed of the front wheel decreases, where the motor is connected to the rear wheel, and the detection apparatus is electrically connected to the controller. In the present lawn mower disclosed herein, a speed of a front wheel is detected to control a moving speed of the lawn mower, thereby enhancing the performance of the lawn mower and improving the user's experience.
    Type: Application
    Filed: September 26, 2018
    Publication date: January 24, 2019
    Inventors: Haishen Xu, Zhao Hu, Yangzi Liu, Toshinari Yamaoka
  • AUGER FOR A SNOW THROWER
    Publication number: 20180334781
    Abstract: A snow thrower and an auger. The snow thrower includes the auger. The auger includes a supporting shaft having a central axis, a snow throwing bracket configured to throw snow, a left snow scraper configured to push snow to the right towards a region where the snow throwing bracket is located, a right snow scraper configured to push snow to the left towards the region where the snow throwing bracket is located, a left supporting plate secured to a left end of the supporting shaft, and a right supporting plate secured to a right end of the supporting shaft. The left snow scraper and the right snow scraper are symmetrical about a plane perpendicular to the central axis. An angle of the left snow scraper around the central axis is greater than 180 degrees and smaller than 360 degrees.
    Type: Application
    Filed: April 18, 2018
    Publication date: November 22, 2018
    Inventors: Feng Yuan, Toshinari Yamaoka, Fangjie Nie
  • HANDHELD BLOWER
    Publication number: 20180317403
    Abstract: A handheld blower includes a housing having an air inlet and a duct assembly mounted in front of the air inlet, the duct assembly including a duct connected with the housing, a motor and a fan mounted in the duct, a battery, and a blowpipe connected to the housing by the duct assembly, the blowpipe defining a central axis in the length direction, and a handle arranged above the housing and the battery. The handle includes a gripping portion arranged on opposite sides of a plane in which the gravity center of the blower is located, and the plane is parallel to a central axis of the blowpipe and substantially perpendicular to a working ground. The gravity center of the handheld blower is adjacent to the gripping portion which enhances the handling comfort and reduces operator fatigue during long times of operation.
    Type: Application
    Filed: July 13, 2018
    Publication date: November 8, 2018
    Inventors: Toshinari Yamaoka, Xiandian Shao, Fangjie Nie, Jianpeng Guo
  • Chain saw
    Patent number: 10118307
    Abstract: A chain saw has a fluid pump. The fluid pump has a pump rod, a pump core assembly defining a pumping channel, and a pump body. The pump core assembly has an inner pump core and an outer pump core. The pumping channel is formed at least by a first hole defined in the inner pump core and a second hole defined in the outer pump core and the first hole is in communication with the inlet and the outlet. The pump rod is arranged to do a straight reciprocating motion in the pumping channel along a first axis so as to force fluid to flow from the inlet to the outlet by passing through the first hole.
    Type: Grant
    Filed: September 5, 2017
    Date of Patent: November 6, 2018
    Assignee: Chervon (HK) Limited
    Inventors: Toshinari Yamaoka, Fangjie Nie, Huixing Fu
  • Hand pushed lawn mower
    Patent number: 10111383
    Abstract: A hand pushed lawn mower includes a power unit including a motor and a circuit board, a support device for supporting the power unit, and a fan that rotates about a rotating axis. The power unit is detachably connected with the support device and includes a power unit housing. The power unit housing includes a containing chamber for containing the motor and the circuit board, an air inlet allowing an air flow to flow into the containing chamber, and an air outlet allowing the air flow to flow out of the containing chamber. When the fan is rotated, the air flow which flows into the containing chamber from the air inlet at least passes in contact with the circuit board and then flows out of the containing chamber through the air outlet.
    Type: Grant
    Filed: May 12, 2016
    Date of Patent: October 30, 2018
    Assignee: Chervon (HK) Limited
    Inventors: Toshinari Yamaoka, Fangjie Nie, Haishen Xu
  • Gardening tool and hedge trimmer
    Patent number: 10098285
    Abstract: A gardening tool includes a motor, a working assembly for performing a function of the gardening tool, and a transmission system for causing the motor to drive the working assembly. The transmission system includes a first clutch member, a movable member that is moveable from a first position to a second position, a bias member for biasing the movable member to the first position, and a second clutch member configured to rotate with the first clutch member when the movable member is biased to the first position and to rotate relative to the first clutch member when the movable member is located at the second position.
    Type: Grant
    Filed: February 19, 2016
    Date of Patent: October 16, 2018
    Assignee: Chervon (HK) Limited
    Inventors: Li Li, Toshinari Yamaoka, Fangjie Nie
  • HANDHELD BLOWER
    Publication number: 20180288952
    Abstract: A handheld blower includes a housing having an air inlet and a duct assembly mounted in front of the air inlet, the duct assembly including a duct connected with the housing, a motor and a fan mounted in the duct, a battery, and a blowpipe connected to the housing by the duct assembly, the blowpipe defining a central axis in the length direction, and a handle arranged above the housing and the battery. The handle includes a gripping portion arranged on opposite sides of a plane in which the gravity center of the blower is located, and the plane is parallel to a central axis of the blowpipe and substantially perpendicular to a working ground. The gravity center of the handheld blower is adjacent to the gripping portion which enhances the handling comfort and reduces operator fatigue during long times of operation.
    Type: Application
    Filed: April 25, 2018
    Publication date: October 11, 2018
    Inventors: Toshinari Yamaoka, Xiandian Shao, Fangjie Nie, Jianpeng Guo
  • Handheld blower
    Patent number: 10091954
    Abstract: A handheld blower includes a housing having an air inlet and a duct assembly mounted in front of the air inlet, the duct assembly including a duct connected with the housing, a motor and a fan mounted in the duct, a battery, and a blowpipe connected to the housing by the duct assembly, the blowpipe defining a central axis in the length direction, and a handle arranged above the housing and the battery. The handle includes a gripping portion arranged on opposite sides of a plane in which the gravity center of the blower is located, and the plane is parallel to a central axis of the blowpipe and substantially perpendicular to a working ground. The gravity center of the handheld blower is adjacent to the gripping portion which enhances the handling comfort and reduces operator fatigue during long times of operation.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: October 9, 2018
    Assignee: Chervon (HK) Limited
    Inventors: Toshinari Yamaoka, Xiandian Shao, Fangjie Nie, Jianpeng Guo
  • GRASS TRIMMER, OPERATING METHOD THEREOF AND CONTROL METHOD THEREOF
    Publication number: 20180271012
    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: May 31, 2018
    Publication date: September 27, 2018
    Applicants: NANJING CHERVON INDUSTRY CO., LTD., CHERVON (HK) LIMITED
    Inventors: Jianpeng GUO, Maohui Li, Fangjie Nie, Toshinari Yamaoka