Patents by Inventor Masatoshi Fukinuki
Masatoshi Fukinuki 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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Publication number: 20230405776Abstract: A handheld power tool including a housing including a barrel and a head housing; a drive mechanism including an electric motor and a drive shaft, where the electric motor outputs power through the drive shaft; a transmission mechanism including a gear assembly; and an output mechanism including an output shaft for outputting power to the outside and at least partially disposed in the head housing; where the transmission mechanism drivingly connects the drive mechanism to the output mechanism. The barrel is formed with a first accommodation cavity and a second accommodation cavity, the electric motor is at least partially mounted in the first accommodation cavity, and the gear assembly is at least partially mounted in the second accommodation cavity.Type: ApplicationFiled: August 31, 2023Publication date: December 21, 2023Inventors: Shuai Chen, Rui Xu, Shaobo Liu, Hongtao Ke, Masatoshi Fukinuki, Chao Meng, Xiaoyong Wang
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Publication number: 20230286130Abstract: A power tool includes a shaft locking assembly and an electric motor. The shaft locking assembly includes a first state where a chuck is restrained from rotating and a second state where the chuck is released to rotate. The shaft locking assembly includes multiple locking portions and an execution portion. The multiple locking portions are formed on or connected to a drive shaft or the chuck. The execution portion is optionally engaged with at least one locking portion. When the execution portion moves to a first position, the execution portion is engaged with the at least one locking portion such that the shaft locking assembly is in the first state. The electric motor includes a stop state where the first position is in the at least one locking portion when the electric motor stops.Type: ApplicationFiled: December 28, 2022Publication date: September 14, 2023Inventors: Guoming Tong, Masatoshi Fukinuki, Xiang Zhao, Jiayu Li, Lei Tian, Jun Le, Liangzhe Wang
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Publication number: 20230278163Abstract: A sander includes a housing, a baseplate assembly, an output shaft rotating about a first axis, an electric motor, and an electric motor shaft extending along a second axis. A first included angle formed between the first axis and the second axis is less than or equal to 60 degrees.Type: ApplicationFiled: March 2, 2023Publication date: September 7, 2023Inventors: Muyang Ni, Xiang Zhao, Yasheng Chen, Masatoshi Fukinuki
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Publication number: 20230234193Abstract: An impact tool includes an impact assembly and a housing. The impact assembly is used for applying an impact force to an output shaft and includes a main shaft driven by a drive shaft, an impact block connected to the main shaft, and a hammer anvil mating with and struck by the impact block. A motor is at least partially accommodated in the housing. A length L from a rear end of the housing to a front end of the output shaft is greater than or equal to 78 mm and less than or equal to 97 mm and an outer circumferential diameter D of the housing is less than or equal to 60 mm.Type: ApplicationFiled: January 9, 2023Publication date: July 27, 2023Inventors: Rui Xu, Yuyi Zheng, Chen Wang, Masatoshi Fukinuki, Biao Zhang, Hongtao Ke, Hengyong Hu, Chuan Geng, Xiaoyong Wang, Di Wu
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Publication number: 20230202020Abstract: A power tool includes a power mechanism including a drive shaft; an oscillating mechanism; an airflow element connected to the drive shaft; a heat conducting portion supported on the drive shaft, where the airflow element is disposed on the heat conducting portion. The oscillating mechanism includes a support assembly sleeved on the drive shaft and an oscillating member. Heat generated by the oscillating mechanism is conducted to the heat conducting portion through the drive shaft, the heat conducting portion has a thermal conductivity greater than or equal to 50 W/m•°C, and a ratio of an axial distance L1 of a portion of the heat conducting portion in contact with the drive shaft to a distance L2 of a thermally conductive portion of the drive shaft between the heat conducting portion and the support assembly is greater than or equal to 0.1 and less than or equal to 5.Type: ApplicationFiled: March 1, 2023Publication date: June 29, 2023Inventors: Masatoshi Fukinuki, Guoming Tong, Rui Zhan, Xiang Zhao, Pengpeng Xue
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Publication number: 20220234123Abstract: A hand-held band saw includes a band saw body and an supporting device. The supporting device includes a fixing member, a slider, a supporting member, and a connection assembly. The fixing member is fixedly connected to the band saw body, the slider is slidably connected to the fixing member, the supporting member supports a workpiece and is connected to the slider, and the connection assembly connectes the slider and the supporting member. When the slider moves, the connection assembly is capable of enabling the supporting member to move along with the slider. The connection assembly comprises a buffer member mounted between the slider and the supporting member.Type: ApplicationFiled: April 12, 2022Publication date: July 28, 2022Inventors: Yang Zhou, Guanhai Shao, Masatoshi FUKINUKI, Hao Gao
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Publication number: 20210394288Abstract: A reciprocating saw includes a housing; a motor, disposed in a housing accommodating space and having a winding extending along a first straight direction; a first transmission wheel connected to the motor; and an input shaft driven by the motor to carry out reciprocating motion. The first transmission wheel is fixed in the accommodating space along a support shaft extending along a second straight direction, and is driven by the motor to rotate about a second straight line; the winding includes a first end and a second end along the first straight direction, a first plane perpendicular to the first straight line passes through a first end face of the first end and a second end perpendicular to the first straight line passes through a second end face of the second end; the first plane is parallel with the second plane, and the winding is located between the first plane and the second plane; at least part of the support shaft is located between the first plane and the second plane.Type: ApplicationFiled: December 12, 2019Publication date: December 23, 2021Inventors: Masatoshi FUKINUKI, Yang ZHOU, Hao GAO
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Publication number: 20210091614Abstract: A brushless motor includes a stator and a rotor installed in the stator. The stator includes a front insulating frame and a rear insulating frame. The rotor includes a rotating shaft, a front bearing, a rear bearing, a front-end cover and a rear-end cover. The front-end cover is located on the front side of the rotor and installed on the front bearing. The rear-end cover is located on the rear side of the rotor and is installed on the rear bearing and abuts against the rear insulating frame. The front side of the front insulating frame is provided with multiple first snap parts. The front-end cover is provided with multiple second snap parts in the circumference. The first snap parts are snap-fitted with the second snap parts.Type: ApplicationFiled: December 9, 2020Publication date: March 25, 2021Inventors: Masatoshi Fukinuki, Yasheng Chen, Wei Lu
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Publication number: 20200376705Abstract: An electric circular saw includes a saw blade, a motor, a housing, a bottom plate, a worm gear assembly and a power supply device. The saw blade is configured to rotate about a first axis. The motor has a motor shaft for driving the saw blade to rotate. The housing has an accommodating portion for accommodating the motor. The worm gear assembly realizes power transmission between the motor and the saw blade. The power supply device includes at least one battery pack to power the motor. The ratio of the nominal voltage of one battery pack to the weight of the electric circular saw is greater than or equal to 6 V/Kg and less than or equal to 12 V/Kg.Type: ApplicationFiled: August 17, 2020Publication date: December 3, 2020Inventors: Masatoshi Fukinuki, Songsong Lu, Hongbin Wang
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Patent number: 10744632Abstract: A power tool, including an output member, a motor, a housing, a transmission device, and a shifting device. The shifting device includes a first shifting element, a second shifting element, an operation member, and a connecting member. The first shifting element is capable of switching between a first position and a second position, and the second shifting element is capable of switching between a third position and a fourth position. When sliding relative to the housing, the operation member drives the first shifting element to switch between the first position and the second position, and a position of the second shifting element remains unchanged. When the operation member rotates relative to the housing, the connecting member drives the second shifting element to switch between the third position and the fourth position, and a position of the first shifting element remains unchanged.Type: GrantFiled: September 27, 2018Date of Patent: August 18, 2020Assignee: Nanjing Chervon Industry Co., Ltd.Inventors: Masatoshi Fukinuki, Yasheng Chen, Wei Lu
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Publication number: 20190160645Abstract: A power tool, including an output member, a motor, a housing, a transmission device, and a shifting device. The shifting device includes a first shifting element, a second shifting element, an operation member, and a connecting member. The first shifting element is capable of switching between a first position and a second position, and the second shifting element is capable of switching between a third position and a fourth position. When sliding relative to the housing, the operation member drives the first shifting element to switch between the first position and the second position, and a position of the second shifting element remains unchanged. When the operation member rotates relative to the housing, the connecting member drives the second shifting element to switch between the third position and the fourth position, and a position of the first shifting element remains unchanged.Type: ApplicationFiled: September 27, 2018Publication date: May 30, 2019Inventors: Masatoshi Fukinuki, Yasheng Chen, Wei Lu
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Publication number: 20180043518Abstract: A power tool for impacting fasteners includes a housing, a striking pin for impacting fasteners, a driving device for driving the striking pin to perform an action of impacting fasteners, a first driving source for providing power to the driving device, a locking element for locking the striking pin, and a second driving source for driving the locking element to lock and/or release the striking pin, which is independent of the first driving source.Type: ApplicationFiled: July 31, 2017Publication date: February 15, 2018Inventors: Masatoshi Fukinuki, Jingdong Hao
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Patent number: 8439243Abstract: A nailer device includes a housing having a nozzle portion formed in an upper end thereof. A motor and a rotary-linear motion transmission mechanism are arranged in the housing and the rotary-linear transmission mechanism functions to couple an output shaft of the motor to a striking rod disposed in the nozzle portion to thereby move the striking rod in a reciprocating manner. A bias device exerts a force on the striking rod towards the outside of the housing along a longitudinal direction of the striking rod.Type: GrantFiled: November 19, 2009Date of Patent: May 14, 2013Assignee: Chervon LimitedInventors: Masatoshi Fukinuki, Toshinari Yamaoka, Gan Wei, Zhiguo Chen, Guillaume Keller
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Patent number: 8424213Abstract: A circular saw has a housing, a direct current motor, a battery assembly, a handle having first and second ends, a circular saw blade and a base plate. The motor is located outside of an area defined by the radius of the circular blade and between the first and second ends of the handle and the blade is laterally aligned with the handle. The circular saw also has a center of gravity which lies close to the plane defined by the saw blade, is below the handle and is within the length of the base plate. As a result of this arrangement, the circular saw of the present invention reduces the influence of the torque created during a cutting operation and improves the balance and operation of the circular saw.Type: GrantFiled: May 25, 2010Date of Patent: April 23, 2013Assignee: Chervon LimitedInventor: Masatoshi Fukinuki
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Patent number: 8348119Abstract: A nailer device has a housing containing a motor, a gear box, a transmission mechanism, and a striking rod. The motor, the gear box, and the transmission mechanism cooperate to cause the striking rod to be moved back and forth. The striking rod has a peripheral outer surface and a longitudinal axis and the striking rod and the gear box are connected through a sliding connection structure which allows the striking rod to be moved along its longitudinal axis and which prevents the striking rod from rotating around its longitudinal axis.Type: GrantFiled: November 19, 2009Date of Patent: January 8, 2013Assignee: Chervon (HK) LimitedInventors: Masatoshi Fukinuki, Toshinari Yamaoka, Gan Wei, Zhiguo Chen, Guillaume Keller
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Patent number: 8342375Abstract: A nailer device has a housing containing a motor and a striking device arranged in a compact manner. A transmission mechanism is mounted in the housing for translating the rotating motions of the motor into the periodic impact motions upon the striking device. The transmission mechanism includes an impact assembly which imparts the periodic impact motions upon the striking device.Type: GrantFiled: April 15, 2010Date of Patent: January 1, 2013Assignee: Chervon (HK) LimitedInventors: Masatoshi Fukinuki, Gan Wei, Zhiguo Chen, Guillaume Keller, Toshinari Yamaoka
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Patent number: RE44344Abstract: A nailer device has a housing containing a motor and a striking device arranged in a compact manner. A transmission mechanism is mounted in the housing for translating the rotating motions of the motor into the periodic impact motions upon the striking device. The transmission mechanism includes an impact assembly which imparts the periodic impact motions upon the striking device.Type: GrantFiled: May 17, 2012Date of Patent: July 9, 2013Assignee: Chervon (HK) LimitedInventors: Masatoshi Fukinuki, Gan Wei, Zhiguo Chen, Guillaume Keller, Toshinari Yamaoka
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Patent number: RE44571Abstract: An electrical device, such as a nailer device, has a motor and a gear housing containing a transmission mechanism. The transmission mechanism is coupled to the motor for driving an impact member. The transmission mechanism includes a shaft having a through-hole wherein a first opening of the through-hole is communicated with the interior of the gear housing and a second opening of the through-hole is communicated with an exterior of the gear housing.Type: GrantFiled: May 17, 2012Date of Patent: November 5, 2013Assignee: Chervon (HK) LimitedInventors: Masatoshi Fukinuki, Toshinari Yamaoka, Gan Wei, Zhiguo Chen, Guillaume Keller
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Patent number: RE44572Abstract: A nailer device is carried within a housing having a nozzle portion wherein the nozzle portion is connected with the housing via a head portion of the housing. The nozzle portion includes a sleeve, a fixing member, and a magnetic member located between the sleeve and the fixing member. The fixing member is mounted on the sleeve and the fixing member has a groove in which the magnetic member is arranged.Type: GrantFiled: October 26, 2012Date of Patent: November 5, 2013Assignee: Chervon (HK) LimitedInventors: Masatoshi Fukinuki, Toshinari Yamaoka, Gan Wei, Zhiguo Chen, Guillaume Keller
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Patent number: RE44602Abstract: A nailer device has a housing containing a motor and a transmission mechanism. The housing has a nozzle portion with a striking rod for striking a nail arranged therein, the striking rod being moved in a reciprocating manner. A rotating shall is mounted in the housing and the rotating shaft is coupled to the output shaft of the motor through the transmission mechanism. An impact member surrounds the rotating shaft and is moved with the rotating shaft. Corresponding slots are formed on the rotating shaft and the impact member respectively and mate with each other with engagement members being contained in the corresponding slots.Type: GrantFiled: May 17, 2012Date of Patent: November 19, 2013Assignee: Chervon (HK) LimitedInventors: Masatoshi Fukinuki, Toshinari Yamaoka, Gan Wei, Zhiguo Chen, Guillaume Keller