Patents by Inventor Maohui LI
Maohui LI 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).
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Patent number: 11913518Abstract: A centrifugal pendulum includes a first support plate, being able to rotate around a rotation axis; a second support plate, facing the first support plate in the axial direction and fixed to the first support plate. A mass is disposed between the first support plate and the second support plate in the axial direction. The first support plate has a first protrusion extending axially, and the first protrusion is integrally formed with the first support plate and defines a first track. The mass has a through hole extending axially, and the through hole defines a second track. The first protrusion extends into said through hole such that the first track faces the second track in the radial direction. A roller is disposed between the first track and the second track in the radial direction, and is capable of rolling against the first track and the second track, such that the mass is able to move relative to the first and second support plates and apply a torque onto the first and second support plates.Type: GrantFiled: August 7, 2020Date of Patent: February 27, 2024Assignee: VALEO KAPEC TORQUE CONVERTERS (NANJING) CO., LTD.Inventors: Shengzhang Wang, Xun Hu, Maohui Li, Ying Yin
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Patent number: 11818979Abstract: 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: GrantFiled: September 20, 2019Date of Patent: November 21, 2023Assignees: Nanjing Chervon Industry Co., Ltd., Chervon (HK) LimitedInventors: Jianpeng Guo, Maohui Li, Fangjie Nie, Toshinari Yamaoka
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Publication number: 20220400609Abstract: 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: ApplicationFiled: July 7, 2022Publication date: December 22, 2022Inventors: Jianpeng Guo, Maohui Li, Fangjie Nie, Toshinari Yamaoka
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Publication number: 20220390003Abstract: The present disclosure relates to a damping system for a hydraulic coupling device, comprising: an output hub having a central axis and a torus which surrounds the central axis, a first track being arranged in the torus; a plurality of turbine mass assemblies uniformly distributed around the central axis, each turbine mass assembly comprising a turbine section, each turbine section carrying a plurality of blades and being provided with a second track corresponding to the first track; a roller that can roll along a roller track defined by the first track and a corresponding second track, so that the turbine mass assembly can move relative to the output hub and exert torque on the output hub; wherein each turbine mass assembly further comprises a mass plate fixedly connected to the turbine section, the output hub being arranged between the mass plate and the turbine section.Type: ApplicationFiled: November 5, 2020Publication date: December 8, 2022Applicant: VALEO KAPEC TORQUE CONVERTERS (NANJING) CO., LTD.Inventors: Teng MENG, Maohui LI, Lu LI, Shengzhang WANG
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Publication number: 20220364628Abstract: A centrifugal pendulum includes a first support plate, being able to rotate around a rotation axis; a second support plate, facing the first support plate in the axial direction and fixed to the first support plate. A mass is disposed between the first support plate and the second support plate in the axial direction. The first support plate has a first protrusion extending axially, and the first protrusion is integrally formed with the first support plate and defines a first track. The mass has a through hole extending axially, and the through hole defines a second track. The first protrusion extends into said through hole such that the first track faces the second track in the radial direction. A roller is disposed between the first track and the second track in the radial direction, and is capable of rolling against the first track and the second track, such that the mass is able to move relative to the first and second support plates and apply a torque onto the first and second support plates.Type: ApplicationFiled: August 7, 2020Publication date: November 17, 2022Applicant: VALEO KAPEC TORQUE CONVERTERS (NANJING) CO., LTD.Inventors: Shengzhang WANG, Xun HU, Maohui LI, Ying YIN
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Patent number: 11419262Abstract: 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: GrantFiled: October 2, 2020Date of Patent: August 23, 2022Assignees: Nanjing Chervon Industry Co., Ltd., Chervon (HK) LimitedInventors: Jianpeng Guo, Maohui Li, Fangjie Nie, Toshinari Yamaoka
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Patent number: 11089724Abstract: 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: GrantFiled: October 2, 2019Date of Patent: August 17, 2021Assignees: Nanjing Chervon Industry Co., LTD., Chervon (HK) LimitedInventors: Jianpeng Guo, Maohui Li, Fangjie Nie, Toshinari Yamaoka
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Publication number: 20210015035Abstract: 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: ApplicationFiled: October 2, 2020Publication date: January 21, 2021Inventors: Jianpeng Guo, Maohui Li, Fangjie Nie, Toshinari Yamaoka
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Patent number: 10849268Abstract: 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: GrantFiled: March 25, 2019Date of Patent: December 1, 2020Assignees: Nanjing Chervon Industry Co., Ltd., CHERVON (HK) LIMITEDInventors: Jianpeng Guo, Maohui Li, Fangjie Nie, Toshinari Yamaoka
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Patent number: 10695946Abstract: A method of manufacture of medium and high density fibreboard with moisture and mildew resistance and low formaldehyde emission, which includes the steps of: (a) providing wood chips; (b) pre-steaming; (c) refining the wood chips into fibers and adding 250-800 kg/m3 urea-formaldehyde resin adhesive, mildew inhibiting agent, fireproof bonding agent, nigrosine solution with a mass percentage of nigrosine in absolutely dried fiber of 1-1.2%, 6-8 kg/m3 refined paraffin and 1.5-2 kg/m3 curing agent; (d) feeding activated carbon of 100-200 mesh to mix with the fibers and then drying the fibers to a water content between 8-10%; (e) separating qualified fibers to measuring silo; (f) laying the fibers onto a mat formation platform uniformly to form a fiber mat by pre-pressing; (g) pre-heating the fiber mat; and (h) processing continuous hot-pressing to form a raw board. The resulting fiberboard is black in color, has good physical properties and low formaldehyde emission rate.Type: GrantFiled: August 28, 2019Date of Patent: June 30, 2020Inventor: Maohui Li
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Publication number: 20200029497Abstract: 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: ApplicationFiled: October 2, 2019Publication date: January 30, 2020Applicants: Nanjing Chervon Industry Co., Ltd., Chervon (HK) LimitedInventors: Jianpeng GUO, Maohui LI, Fangjie NIE, Toshinari YAMAOKA
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Publication number: 20200008348Abstract: 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: ApplicationFiled: September 20, 2019Publication date: January 9, 2020Applicants: Nanjing Chervon Industry Co., Ltd., Chervon (HK) LimitedInventors: Jianpeng GUO, Maohui LI, Fangjie NIE, Toshinari YAMAOKA
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Publication number: 20190389088Abstract: A method of manufacture of medium and high density fibreboard with moisture and mildew resistance and low formaldehyde emission, which includes the steps of: (a) providing wood chips; (b) pre-steaming; (c) refining the wood chips into fibers and adding 250-800 kg/m3 urea-formaldehyde resin adhesive, mildew inhibiting agent, fireproof bonding agent, nigrosine solution with a mass percentage of nigrosine in absolutely dried fiber of 1-1.2%, 6-8 kg/m3 refined paraffin and 1.5-2 kg/m3 curing agent; (d) feeding activated carbon of 100-200 mesh to mix with the fibers and then drying the fibers to a water content between 8-10%; (e) separating qualified fibers to measuring silo; (f) laying the fibers onto a mat formation platform uniformly to form a fiber mat by pre-pressing; (g) pre-heating the fiber mat; and (h) processing continuous hot-pressing to form a raw board. The resulting fiberboard is black in color, has good physical properties and low formaldehyde emission rate.Type: ApplicationFiled: August 28, 2019Publication date: December 26, 2019Inventor: Maohui LI
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Patent number: 10440882Abstract: 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: GrantFiled: May 31, 2018Date of Patent: October 15, 2019Assignees: Nanjing Chervon Industry Co., LTD., Chervon (HK) LimitedInventors: Jianpeng Guo, Maohui Li, Fangjie Nie, Toshinari Yamaoka
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Patent number: 10399244Abstract: A method of manufacture of medium and high density fibreboard with moisture and mildew resistance and low formaldehyde emission, which includes the steps of: (a) providing wood chips; (b) pre-steaming; (c) refining the wood chips into fibers and adding 200-230 kg/m3 urea-formaldehyde resin adhesive, nigrosine solution with a mass percentage of nigrosine in absolutely dried fiber of 1-1.2%, 6-8 kg/m3 refined paraffin and 1.5-2 kg/m3 curing agent; (d) feeding activated carbon of 100-200 mesh to mix with the fibers and then drying the fibers to a water content between 8-10%; (e) separating qualified fibers to measuring silo; (f) laying the fibers onto a mat formation platform uniformly to form a fiber mat by pre-pressing; (g) pre-heating the fiber mat; and (h) processing continuous hot-pressing to form a raw board. The resulting fiberboard is black in color, has good physical properties and low formaldehyde emission rate.Type: GrantFiled: November 9, 2016Date of Patent: September 3, 2019Inventor: Maohui Li
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Publication number: 20190216013Abstract: 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: ApplicationFiled: March 25, 2019Publication date: July 18, 2019Inventors: Jianpeng Guo, Maohui Li, Fangjie Nie, Toshinari Yamaoka
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Patent number: 10264725Abstract: 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: GrantFiled: December 12, 2017Date of Patent: April 23, 2019Assignees: Nanjing Chervon Industry Co., Ltd., Chervon (HK) LimitedInventors: Jianpeng Guo, Maohui Li, Fangjie Nie, Toshinari Yamaoka
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Publication number: 20180271012Abstract: 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: ApplicationFiled: May 31, 2018Publication date: September 27, 2018Applicants: NANJING CHERVON INDUSTRY CO., LTD., CHERVON (HK) LIMITEDInventors: Jianpeng GUO, Maohui Li, Fangjie Nie, Toshinari Yamaoka
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Publication number: 20180098492Abstract: 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: ApplicationFiled: December 12, 2017Publication date: April 12, 2018Inventors: Jianpeng Guo, Maohui Li, Fangjie Nie, Toshinari Yamaoka
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Publication number: 20170151690Abstract: A method of manufacture of medium and high density fibreboard with moisture and mildew resistance and low formaldehyde emission, which includes the steps of: (a) providing wood chips; (b) pre-steaming; (c) refining the wood chips into fibers and adding 200-230 kg/m3 urea-formaldehyde resin adhesive, nigrosine solution with a mass percentage of nigrosine in absolutely dried fiber of 1-1.2%, 6-8 kg/m3 refined paraffin and 1.5-2 kg/m3 curing agent; (d) feeding activated carbon of 100-200 mesh to mix with the fibers and then drying the fibers to a water content between 8-10%; (e) separating qualified fibers to measuring silo; (f) laying the fibers onto a mat formation platform uniformly to form a fiber mat by pre-pressing; (g) pre-heating the fiber mat; and (h) processing continuous hot-pressing to form a raw board. The resulting fiberboard is black in color, has good physical properties and low formaldehyde emission rate.Type: ApplicationFiled: November 9, 2016Publication date: June 1, 2017Inventor: Maohui LI