Patents by Inventor Jianpeng Guo

Jianpeng Guo 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: 20210076564
    Abstract: A trimmer head includes a spool configured to rotate about a rotation axis. The spool is provided with a plurality of first transmission teeth. A head housing accommodates at least a part of the spool. The head housing is provided with a plurality of second transmission teeth for engaging with the plurality of first transmission teeth. When the trimmer head rotates about the rotation axis and along a predetermined direction, the plurality of first transmission teeth engage with the plurality of second transmission teeth to transmit force between the head housing and the spool. The force acts on a point of action of the head housing or the spool to drive the head housing and the spool to rotate synchronously along the predetermined direction.
    Type: Application
    Filed: September 10, 2020
    Publication date: March 18, 2021
    Inventor: Jianpeng Guo
  • Publication number: 20210022287
    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: October 9, 2020
    Publication date: January 28, 2021
    Inventors: Jianpeng Guo, Toshinari Yamaoka, Fangjie Nie, Qi Zhang, Zongjing Li, Fei Wang, Lanxi Xu
  • 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: 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
  • 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
  • Publication number: 20200281116
    Abstract: A grass trimmer line includes a first line body having a first free end and a first non-free end and a second line body having a second free end and a second non-free end. A length of the second line body is substantially equal to a length of the first line body. The first line body has a first feature, the second line body has a second feature corresponding to the first feature, and the second feature is different from the first feature. A connecting portion is configured to connect the first non-free end of the first line body and the second non-free end of the second line body so that the first line body and the second line body are connected into the complete grass trimmer line.
    Type: Application
    Filed: March 4, 2020
    Publication date: September 10, 2020
    Inventors: Jianpeng Guo, Yi Xu
  • 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
  • Publication number: 20200236848
    Abstract: A trimmer head includes a spool formed with a winding portion for winding a trimmer line and a head housing formed with an accommodating space for accommodating at least a portion of the spool. The trimmer head further includes an intermediate element for transmitting a torque between the spool and the head housing such that one of the spool and the head housing rotates with the other. The spool drives the intermediate element to rotate and the intermediate element is slidably connected to the spool in a direction along a rotation axis or parallel to the rotation axis. The spool does not move in the axial direction when the trimmer head of the grass trimmer is playing the trimmer line, thereby effectively avoiding the problem of the trimmer line jamming.
    Type: Application
    Filed: April 13, 2020
    Publication date: July 30, 2020
    Inventors: Jianpeng Guo, Sanglong Wang, Longhai Chen, Qi Zhang, Hao Wang, Toshinari Yamaoka, Fangjie Nie
  • Publication number: 20200236845
    Abstract: A grass trimmer includes an operating device configured for a user to operate and a grass trimmer device including a grass trimmer head and a motor. The grass trimmer head includes a spool configured for a grass trimmer line to wind around and a housing formed with an accommodating cavity. When the grass trimmer is mounted with the grass trimmer line, a part of the grass trimmer line protruding outside the housing is defined as an effective part of the grass trimmer line. The grass trimmer further includes a controller configured to control the grass trimmer head to release a grass trimmer line when the grass trimmer head is mounted with the grass trimmer line and a length of the effective part is detected to be less than or equal to a preset value.
    Type: Application
    Filed: April 10, 2020
    Publication date: July 30, 2020
    Inventors: Sanglong Wang, Jianpeng Guo
  • 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
  • Publication number: 20200128728
    Abstract: A trimming head for use with a grass trimmer includes a spool for winding a cutting line and rotatable about an axis, a head housing formed with apertures for the cutting line to pass through, a touched element configured to be activated, a first driving member configured to drive the spool to rotate to send out the cutting line, and a first transmitting member configured to cooperate with a first driving member to receive a driving force of the first driving member. The trimming head has a sending mode in which a length of the cutting line extends without rotating the head housing.
    Type: Application
    Filed: September 10, 2019
    Publication date: April 30, 2020
    Inventors: Jianpeng Guo, Fangjie Nie
  • 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
  • Publication number: 20200084962
    Abstract: A grass trimmer includes a cutting head for mounting a cutting member, a drive head having a output shaft for driving the cutting head to rotate, and an anti-winding member for preventing the output shaft from being wound to by grass. The drive head includes a drive device to drive the output shaft and a head housing for accommodating the drive device. The output shaft connects to the cutting head and passes through the anti-winding member and the anti-winding member is mounted to the cutting head so as to rotate with the cutting head and is disposed between the cutting head and the head housing so as to fill the space between the cutting head and the head housing.
    Type: Application
    Filed: November 25, 2019
    Publication date: March 19, 2020
    Inventors: Feng Yuan, Ming Peng, Jianpeng Guo, Zichun Tang
  • 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
  • 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
  • Patent number: 10485165
    Abstract: A grass trimmer includes a cutting head for mounting a cutting member, a drive head having a output shaft for driving the cutting head to rotate, and an anti-winding member for preventing the output shaft from being wound to by grass. The drive head includes a drive device to drive the output shaft and a head housing for accommodating the drive device. The output shaft connects to the cutting head and passes through the anti-winding member and the anti-winding member is mounted to the cutting head so as to rotate with the cutting head and is disposed between the cutting head and the head housing so as to fill the space between the cutting head and the head housing.
    Type: Grant
    Filed: November 19, 2015
    Date of Patent: November 26, 2019
    Assignee: Chervon (HK) Limited
    Inventors: Feng Yuan, Ming Peng, Jianpeng Guo, Zichun Tang
  • 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
  • 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
  • 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