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).

  • Publication number: 20210016817
    Abstract: A hand-propelled power tool includes a main body, a handle assembly, a fixing plate assembly, and a walking assembly connected to the main body. The handle assembly includes a first connecting rod and a second connecting rod. The first connecting rod is provided with a first adjusting assembly. The second connecting rod is provided with a second adjusting assembly. The first adjusting assembly and the second adjusting assembly form a linkage by a connecting member. The first adjusting assembly and the second adjusting assembly include a first movement state and a second movement state. When in the first movement state, the connecting member can transmit a force between the first adjusting assembly and the second adjusting assembly. When in the second movement state, the connecting member does not transmit a force between the first adjusting assembly and the second adjusting assembly.
    Type: Application
    Filed: July 7, 2020
    Publication date: January 21, 2021
    Inventors: Guangqian Zhu, Na Guo, Toshinari Yamaoka, Fangjie Nie, Qi Zhang
  • Publication number: 20210015038
    Abstract: A hand-propelled power tool includes a main body and a handle device connected to the main body. The handle device includes a rod body connected to the main body extending along a first straight line and an adjustment assembly connected to the rod body comprising an operating piece capable of sliding along the first straight line relative to the rod body. The adjustment assembly has a locked state and an unlocked state, the operating piece is operative to slide along the rod body to switch the adjustment assembly between the locked state and the unlocked state, when the adjustment assembly is in the unlocked state, the handle device is operative to rotate relative to the main body, and, when the adjustment assembly is in the locked state, the handle device is fixedly connected to the main body.
    Type: Application
    Filed: July 7, 2020
    Publication date: January 21, 2021
    Inventors: Toshinari Yamaoka, Qi Zhang, Fangjie Nie, Shichang Fu
  • Publication number: 20210015035
    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 and 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: Application
    Filed: October 2, 2020
    Publication date: January 21, 2021
    Inventors: Jianpeng Guo, Maohui Li, Fangjie Nie, Toshinari Yamaoka
  • Patent number: 10892449
    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: Grant
    Filed: August 8, 2018
    Date of Patent: January 12, 2021
    Assignee: Nanjing Chervon Industry Co., Ltd.
    Inventors: Toshinari Yamaoka, Kaichao Dai
  • Publication number: 20200404840
    Abstract: A lawn mower includes a blade assembly configured to perform a cutting function, a deck formed with an accommodation space for accommodating at least a portion of the blade assembly, a motor configured to drive the blade assembly to rotate about a rotation axis, and a battery pack configured to power the motor. The blade assembly includes a first cutting portion configured to cut grass and a second cutting portion configured to cut grass. In the direction parallel to the rotation axis, the second cutting portion is located under the first cutting portion. The battery pack includes a battery pack housing and battery cells provided in the battery pack housing.
    Type: Application
    Filed: June 26, 2020
    Publication date: December 31, 2020
    Inventors: Haishen Xu, Toshinari Yamaoka, Jian Yang
  • Patent number: 10869424
    Abstract: A lawn mower includes a blade configured to cut grass, a chassis, configured to accommodate the blade, and front and rear wheels connected to the chassis. A motor is configured to drive at least the rear wheel to rotate. A detection apparatus detects the rotational speed of the front wheel and a controller controls the motor. Accordingly, the 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: Grant
    Filed: September 26, 2018
    Date of Patent: December 22, 2020
    Assignee: Nanjing Chervon Industry Co., Ltd.
    Inventors: Haishen Xu, Zhao Hu, Yangzi Liu, Toshinari Yamaoka
  • Publication number: 20200392685
    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: August 28, 2020
    Publication date: December 17, 2020
    Inventors: Xiangqing Fu, Feng Yuan, Keqiong Zhong, Qian Liu, Li Li, Toshinari Yamaoka, Fangjie Nie, Liang Chen
  • Publication number: 20200390031
    Abstract: A riding lawn mower includes a chassis, a power output assembly, a walking assembly, a power supply device, a control module, and an operating apparatus. The operating apparatus includes at least one bracket, an operating lap bar assembly, a pivoting assembly, and a position detecting module. The pivoting assembly mounts the operating lap bar of the operating lap bar assembly on the bracket. The operating lap bar can rotate around different positions in a first direction F1 and/or a second direction F2. The position detecting module includes a magnetic element and a magnetic sensor. The magnetic element is provided on the pivoting assembly or the bracket and the magnet sensor is spaced from the magnetic element so that the magnetic element and the magnetic sensor can generate a relative movement for detecting the position of the operating lap bar in the first direction F1 and/or the second direction F2.
    Type: Application
    Filed: August 26, 2020
    Publication date: December 17, 2020
    Inventors: Dezhong Yang, Jicun Cai, Xiubo Dai, Zhen Wang, Toshinari Yamaoka, Dingming Meng
  • Patent number: 10856466
    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: Grant
    Filed: February 4, 2020
    Date of Patent: December 8, 2020
    Assignee: Nanjing Chervon Industry Co., Ltd.
    Inventors: Jianpeng Guo, Toshinari Yamaoka, Fangjie Nie, Qi Zhang, Zongjing Li, Fei Wang, Lanxi Xu
  • Patent number: 10849268
    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: Grant
    Filed: March 25, 2019
    Date of Patent: December 1, 2020
    Assignees: Nanjing Chervon Industry Co., Ltd., CHERVON (HK) LIMITED
    Inventors: Jianpeng Guo, Maohui Li, Fangjie Nie, Toshinari Yamaoka
  • Publication number: 20200367451
    Abstract: A sweeper head includes a cleaning device, a transmission shaft, and a shield. The cleaning device includes a rolling member rotatable about a first axis and a cleaning element. The transmission shaft is rotatable about a second axis. The shield includes a surrounding portion for surrounding at least a part of the cleaning element. The surrounding portion includes a front surrounding portion and a rear surrounding portion located on two sides of a first plane and the first plane passes through the second axis and is parallel to the first axis. The ratio of a maximum measurement of the front surrounding portion in a direction parallel to the first axis to a maximum measurement of the rear surrounding portion in the direction is greater than or equal to 2 and is less than or equal to 3.
    Type: Application
    Filed: May 19, 2020
    Publication date: November 26, 2020
    Inventors: Fangjie Nie, Chengxin Pan, Toshinari Yamaoka
  • Publication number: 20200344947
    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: July 20, 2020
    Publication date: November 5, 2020
    Inventors: Yu Yan, Toshinari Yamaoka, Fangjie Nie, Haishen Xu, Yangzi Liu
  • Publication number: 20200325645
    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: June 26, 2020
    Publication date: October 15, 2020
    Inventors: Xiangqing Fu, Feng Yuan, Keqiong Zhong, Qian Liu, Li Li, Toshinari Yamaoka, Fangjie Nie, Liang Chen
  • Publication number: 20200315095
    Abstract: An electric riding lawn mower includes a seat for a user to ride, a main frame to support the seat, a power output assembly including a mowing element to output power to realize mowing function and a first motor to drive the mowing element, a walking assembly to at least drive the electric riding lawn mower to travel in the direction of a first straight line on the ground and a second motor to drive the walking assembly, and a power supply device to power the electric riding lawn mower with a first battery pack, which includes a first battery pack housing and a plurality of battery cells disposed therein. The power supply device is mounted to the main frame. At least one of the first battery packs of the power supply device forms a pluggable connection with the main frame. The battery cells are lithium batteries.
    Type: Application
    Filed: June 23, 2020
    Publication date: October 8, 2020
    Inventors: Qian Liu, Toshinari Yamaoka, Zhen Wang, Fangjie Nie
  • Patent number: 10774487
    Abstract: A handheld blower includes a housing, the housing including an air inlet and a duct assembly, the duct assembly including a duct, a motor and a fan mounted in the duct, a battery, a handle, and a blowpipe which defines a central axis. Along the direction of the central axis, the area of the flowing cross-section of an air passage at the rear end of the fan adjacent to the air inlet is larger than that of the flowing cross-section of an air outlet of the blowpipe, and the rate between the area of the flow cross-section of the air outlet of the blowpipe and the area of the flow cross-section of the flow-through area at the position of the fan is greater than or equal to 0.8.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: September 15, 2020
    Assignee: Chervon (HK) Limited
    Inventors: Toshinari Yamaoka, Jianpeng Guo, Fangjie Nie, Xiandian Shao
  • Patent number: 10767326
    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: Grant
    Filed: April 18, 2018
    Date of Patent: September 8, 2020
    Assignee: Nanjing Chervon Industry Co., Ltd.
    Inventors: Feng Yuan, Toshinari Yamaoka, Fangjie Nie
  • Patent number: 10760230
    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: Grant
    Filed: September 3, 2019
    Date of Patent: September 1, 2020
    Assignee: Chervon (HK) Limited
    Inventors: Xiangqing Fu, Feng Yuan, Keqiong Zhong, Qian Liu, Li Li, Toshinari Yamaoka, Fangjie Nie, Liang Chen
  • Patent number: 10753364
    Abstract: An assembly including a wearable blower having a fan, a motor, an air duct having a duct housing thereof, a handle attached to the duct housing, and a hanger disposed on the duct housing. The hanger has an attachment part attached to the duct housing and adjacent to the handle and a hanger part connected to the attachment part for holding an accessory attached to the blower. The hanger part rotates with respect to the duct housing at a first hanging position whereat the hanger part is unfolded with an opening mouth for holding the accessory of the blower and the hanger part rotates with respect to the duct housing at a second folded position. Thus, the arrangement of the hanger can help the user to hold the accessory of the blower at the work states.
    Type: Grant
    Filed: June 22, 2017
    Date of Patent: August 25, 2020
    Assignee: CHERVON (HK) LIMITED
    Inventors: Toshinari Yamaoka, Xiandian Shao
  • Patent number: 10736403
    Abstract: Embodiments of the disclosure are directed to a back-mounted power tool system. The power tool system includes a battery package that can be used on other power tool systems, a backpack apparatus, a power tool, and a connecting member. The backpack apparatus includes a backpack harness to mount the backpack apparatus onto a user's body and a first connector to removably couple the battery package to the backpack apparatus. The power tool includes a motor driven by a power supply from the battery package. The connecting member transfers a weight of the power tool and/or a force received from the power tool to the backpack apparatus by rotatably coupling the power tool to the backpack apparatus. The connecting member further enables the power tool to rotate about a first rotation axis or a second rotation axis, the first rotation axis being perpendicular to the second rotation axis.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: August 11, 2020
    Assignee: Chevron (HK) Limited
    Inventors: Toshinari Yamaoka, Fangjie Nie, Jianpeng Guo
  • Patent number: 10729066
    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: Grant
    Filed: June 20, 2019
    Date of Patent: August 4, 2020
    Assignee: Nanjing Chevron Industry Co., Ltd.
    Inventors: Yu Yan, Toshinari Yamaoka, Fangjie Nie, Haishen Xu, Yangzi Liu