Patents by Inventor Takuya Konnai
Takuya Konnai 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: 11571793Abstract: A driving tool includes a housing having a support shaft for operably supporting an operating member, a contacting member which is capable of contacting and separating from a workpiece into which a fastener is to be driven, and which operates by contacting the workpiece, a pressure chamber to which and from which a compressible gas is supplied and discharged, a striking part operating in a direction to strike the fastener, a gas supply mechanism, and a transmission control member for controlling the operation of the gas supply mechanism, said operation being based on the operation of at least one of the operating member and the contacting member or the operation of both of them, wherein the fastener is struck when an operating force is applied to the operating member and to the transmission control member, and the contacting member is operated.Type: GrantFiled: May 17, 2019Date of Patent: February 7, 2023Assignee: Koki Holdings Co., Ltd.Inventors: Kazuhiro Ootsuka, Takuya Konnai
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Publication number: 20210229249Abstract: A driving tool includes a housing having a support shaft for operably supporting an operating member, a contacting member which is capable of contacting and separating from a workpiece into which a fastener is to be driven, and which operates by contacting the workpiece, a pressure chamber to which and from which a compressible gas is supplied and discharged, a striking part operating in a direction to strike the fastener, a gas supply mechanism, and a transmission control member for controlling the operation of the gas supply mechanism, said operation being based on the operation of at least one of the operating member and the contacting member or the operation of both of them, wherein the fastener is struck when an operating force is applied to the operating member and to the transmission control member, and the contacting member is operated.Type: ApplicationFiled: May 17, 2019Publication date: July 29, 2021Applicant: Koki Holdings Co., Ltd.Inventors: Kazuhiro OOTSUKA, Takuya KONNAI
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Patent number: 10991228Abstract: A technique capable of immediately reporting to an operator an occurrence of abnormality in an electric tool is provided. A communication terminal includes a communication-terminal-side control unit that determines whether abnormality has occurred in any of electric tools based on information acquired from the electric tools via wireless communication. When the communication-terminal-side control unit determines the occurrence of abnormality in any one of the electric tools, the occurrence of abnormality in the electric tool is reported by at least one of a report unit included in the electric tools other than the electric tool in which the occurrence of abnormality is determined and a report unit included in the communication terminal.Type: GrantFiled: April 15, 2019Date of Patent: April 27, 2021Assignee: KOKI HOLDINGS CO., LTD.Inventors: Tomomasa Nishikawa, Takuya Konnai, Tatsuya Ito
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Patent number: 10391599Abstract: There is provided an electric power tool having a plurality of operation modes with different rotation speeds at least in a predetermined load range. The electric power tool is capable of switching between the operation modes when a predetermined condition is satisfied even during a motor is driven, and configured such that a rotation speed of the motor is changed smoothly or in a stepwise manner at the switching between the operation modes.Type: GrantFiled: July 10, 2014Date of Patent: August 27, 2019Assignee: KOKI HOLDINGS CO., LTD.Inventors: Kenichirou Yoshida, Akira Onose, Shinji Kuragano, Takuya Konnai
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Publication number: 20190244509Abstract: A technique capable of immediately reporting to an operator an occurrence of abnormality in an electric tool is provided. A communication terminal includes a communication-terminal-side control unit that determines whether abnormality has occurred in any of electric tools based on information acquired from the electric tools via wireless communication. When the communication-terminal-side control unit determines the occurrence of abnormality in any one of the electric tools, the occurrence of abnormality in the electric tool is reported by at least one of a report unit included in the electric tools other than the electric tool in which the occurrence of abnormality is determined and a report unit included in the communication terminal.Type: ApplicationFiled: April 15, 2019Publication date: August 8, 2019Inventors: Tomomasa NISHIKAWA, Takuya KONNAI, Tatsuya ITO
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Patent number: 10325475Abstract: A technique capable of immediately reporting to an operator an occurrence of abnormality in an electric tool is provided. A communication terminal 100 includes a communication-terminal-side control unit that determines whether abnormality has occurred in any of electric tools 10, 200, 300, and 400 based on information acquired from the electric tools 10, 200, 300, and 400 via wireless communication. When the communication-terminal-side control unit determines the occurrence of abnormality in any one of the electric tools 10, 200, 300, and 400, the occurrence of abnormality in the electric tool 10, 200, 300, or 400 is reported by at least one of a report unit included in the electric tools 10, 200, 300, and 400 other than the electric tool 10, 200, 300, or 400 in which the occurrence of abnormality is determined and a report unit included in the communication terminal 100.Type: GrantFiled: March 13, 2018Date of Patent: June 18, 2019Assignee: KOKI HOLDINGS CO., LTD.Inventors: Tomomasa Nishikawa, Takuya Konnai, Tatsuya Ito
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Publication number: 20180204443Abstract: A technique capable of immediately reporting to an operator an occurrence of abnormality in an electric tool is provided. A communication terminal 100 includes a communication-terminal-side control unit that determines whether abnormality has occurred in any of electric tools 10, 200, 300, and 400 based on information acquired from the electric tools 10, 200, 300, and 400 via wireless communication. When the communication-terminal-side control unit determines the occurrence of abnormality in any one of the electric tools 10, 200, 300, and 400, the occurrence of abnormality in the electric tool 10, 200, 300, or 400 is reported by at least one of a report unit included in the electric tools 10, 200, 300, and 400 other than the electric tool 10, 200, 300, or 400 in which the occurrence of abnormality is determined and a report unit included in the communication terminal 100.Type: ApplicationFiled: March 13, 2018Publication date: July 19, 2018Inventors: Tomomasa NISHIKAWA, Takuya KONNAI, Tatsuya ITO
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Patent number: 9940813Abstract: A technique capable of immediately reporting to an operator an occurrence of abnormality in an electric tool is provided. A communication terminal 100 includes a communication-terminal-side control unit that determines whether abnormality has occurred in any of electric tools 10, 200, 300, and 400 based on information acquired from the electric tools 10, 200, 300, and 400 via wireless communication. When the communication-terminal-side control unit determines the occurrence of abnormality in any one of the electric tools 10, 200, 300, and 400, the occurrence of abnormality in the electric tool 10, 200, 300, or 400 is reported by at least one of a report unit included in the electric tools 10, 200, 300, and 400 other than the electric tool 10, 200, 300, or 400 in which the occurrence of abnormality is determined and a report unit included in the communication terminal 100.Type: GrantFiled: January 9, 2015Date of Patent: April 10, 2018Assignee: HITACHI KOKI CO., LTD.Inventors: Tomomasa Nishikawa, Takuya Konnai, Tatsuya Ito
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Patent number: 9636762Abstract: A desk-top cutting machine including: a base configured to support a workpiece; a cutting part including, a motor configured to rotary drive a cutting tool, a main cover covering an upper portion of the cutting tool, and a protective cover covering a portion of the cutting tool that is not covered by the main cover, the protective cover configured to move in a direction of exposing the cutting tool when the cutting part swings toward a bottom dead point from a top dead point; and a cutting part support mechanism configured to swingably support the cutting part, characterized in that: the motor is configured to be rotated at a first rotational speed slower than a maximum rotational speed thereof when the cutting part is positioned at the top dead point.Type: GrantFiled: July 11, 2013Date of Patent: May 2, 2017Assignee: HITACHI KOKI CO., LTD.Inventors: Hideaki Terashima, Takuya Konnai
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Publication number: 20160351039Abstract: A technique capable of immediately reporting to an operator an occurrence of abnormality in an electric tool is provided. A communication terminal 100 includes a communication-terminal-side control unit that determines whether abnormality has occurred in any of electric tools 10, 200, 300, and 400 based on information acquired from the electric tools 10, 200, 300, and 400 via wireless communication. When the communication-terminal-side control unit determines the occurrence of abnormality in any one of the electric tools 10, 200, 300, and 400, the occurrence of abnormality in the electric tool 10, 200, 300, or 400 is reported by at least one of a report unit included in the electric tools 10, 200, 300, and 400 other than the electric tool 10, 200, 300, or 400 in which the occurrence of abnormality is determined and a report unit included in the communication terminal 100.Type: ApplicationFiled: January 9, 2015Publication date: December 1, 2016Inventors: Tomomasa NISHIKAWA, Takuya KONNAI, Tatsuya ITO
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Patent number: 9197153Abstract: A power tool includes a housing, an electric motor accommodated in the housing, a secondary battery that supplies electric power to the electric motor, a handle provided at the housing, a trigger switch provided at the handle for controlling electric power supply to the electric motor, a residual capacity display for displaying a residual capacity of the secondary battery, and a lock-release switch provided at the handle and configured to allow the trigger switch to be operable and to start displaying the residual capacity at the residual capacity display upon manipulation to the lock-release switch.Type: GrantFiled: July 22, 2013Date of Patent: November 24, 2015Assignee: Hitachi Koki Co., Ltd.Inventors: Kenichirou Yoshida, Hideyuki Tanimoto, Hayato Yamaguchi, Shinji Kuragano, Takuya Konnai
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Publication number: 20150174674Abstract: A desk-top cutting machine including: a base configured to support a workpiece; a cutting part including, a motor configured to rotary drive a cutting tool, a main cover covering an upper portion of the cutting tool, and a protective cover covering a portion of the cutting tool that is not covered by the main cover, the protective cover configured to move in a direction of exposing the cutting tool when the cutting part swings toward a bottom dead point from a top dead point; and a cutting part support mechanism configured to swingably support the cutting part, characterized in that: the motor is configured to be rotated at a first rotational speed slower than a maximum rotational speed thereof when the cutting part is positioned at the top dead point.Type: ApplicationFiled: July 11, 2013Publication date: June 25, 2015Inventors: Hideaki Terashima, Takuya Konnai
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Publication number: 20150034348Abstract: There is provided an electric power tool having a plurality of operation modes with different rotation speeds at least in a predetermined load range. The electric power tool is capable of switching between the operation modes when a predetermined condition is satisfied even during a motor is driven, and configured such that a rotation speed of the motor is changed smoothly or in a stepwise manner at the switching between the operation modes.Type: ApplicationFiled: July 10, 2014Publication date: February 5, 2015Inventors: Kenichirou Yoshida, Akira Onose, Shinji Kuragano, Takuya Konnai
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Patent number: 8800108Abstract: A dust collector comprises a tank having an intake opening; a head unit mounted on the tank; a motor provided on the head unit and having a rotor, a stator and an output shaft; a fan provided on the head unit and rotating under power from the motor, for sucking air or liquids into the tank from the intake opening; and a filter housed in the tank, that separates dust from the air or liquid sucked into the tank. The rotor has a coil disc having multiple roughly annular coils arranged in a circumferential direction centered on the output shaft in the direction of the axial line of the output shaft. The stator has a magnetic flux generation mechanism that generates magnetic flux that passes through the coil disc in the direction of the axial line of the output shaft.Type: GrantFiled: December 21, 2010Date of Patent: August 12, 2014Assignee: Hitachi Koki Co., Ltd.Inventors: Hideyuki Tanimoto, Takuya Konnai, Kouji Sagawa
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Patent number: 8721298Abstract: An air blower comprises a motor including a rotor, a stator, and an output shaft fixed to the rotor, a fan that rotates by receiving power from the motor, a casing that retains the motor and the fan, and a handle provided at the casing. The rotor has a coil disc including a plurality of substantially annular coils arranged in the circumferential direction around the output shaft as viewed from the direction of the axial line of the output shaft. The stator has a magnetic flux generating mechanism that generates magnetic fluxes passing through the coil disc in the direction of the axial line of the output shaft.Type: GrantFiled: November 8, 2010Date of Patent: May 13, 2014Assignee: Hitachi Koki Co., Ltd.Inventors: Hideyuki Tanimoto, Takuya Konnai, Kouji Sagawa
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Patent number: 8678884Abstract: The portable abrasive tool comprises a flat motor composed of a rotor having a coil disk in the form of a disk on which multiple coil pieces are arranged in the circumferential direction about the output shaft when seen in the direction of the axis line of the output shaft and a stator having magnets arranged in the manner that the magnetic flux passes through the coil disk in the direction of the axis line of the output shaft, and an abrasive part connected to one end of the output shaft of the flat motor.Type: GrantFiled: November 8, 2010Date of Patent: March 25, 2014Assignee: Hitachi Koki Co., Ltd.Inventors: Hideyuki Tanimoto, Takuya Konnai, Kouji Sagawa
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Publication number: 20140028223Abstract: A power tool includes a housing, an electric motor accommodated in the housing, a secondary battery that supplies electric power to the electric motor, a handle provided at the housing, a trigger switch provided at the handle for controlling electric power supply to the electric motor, a residual capacity display for displaying a residual capacity of the secondary battery, and a lock-release switch provided at the handle and configured to allow the trigger switch to be operable and to start displaying the residual capacity at the residual capacity display upon manipulation to the lock-release switch.Type: ApplicationFiled: July 22, 2013Publication date: January 30, 2014Applicant: HITACHI KOKI CO., LTD.Inventors: Kenichirou Yoshida, Hideyuki Tanimoto, Hayato Yamaguchi, Shinji Kuragano, Takuya Konnai
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Patent number: 8354183Abstract: An adapter includes an insertion part that is inserted into a body of a power tool and has terminals for electrically connecting with the power tool; a pair of rails for guiding insertion of a battery pack in a direction substantially orthogonal to the insertion direction of the insertion part; an operating part constituting tool-latching device for attaching to and detaching from the body of the power tool; and a receiving part constituting battery-latching device for attaching to and detaching from the battery pack. The operating part of the tool-latching device and the receiving-side of the battery-latching device are disposed in different positions when viewing the adapter in the insertion direction of the insertion part.Type: GrantFiled: September 20, 2007Date of Patent: January 15, 2013Assignee: Hitachi Koki Co., Ltd.Inventors: Yuuichi Konuma, Masateru Niyada, Takuya Konnai
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Publication number: 20110146025Abstract: A dust collector comprises a tank having an intake opening; a head unit mounted on the tank; a motor provided on the head unit and having a rotor, a stator and an output shaft; a fan provided on the head unit and rotating under power from the motor, for sucking air or liquids into the tank from the intake opening; and a filter housed in the tank, that separates dust from the air or liquid sucked into the tank. The rotor has a coil disc having multiple roughly annular coils arranged in a circumferential direction centered on the output shaft in the direction of the axial line of the output shaft. The stator has a magnetic flux generation mechanism that generates magnetic flux that passes through the coil disc in the direction of the axial line of the output shaft.Type: ApplicationFiled: December 21, 2010Publication date: June 23, 2011Inventors: Hideyuki Tanimoto, Takuya Konnai, Kouji Sagawa
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Publication number: 20110108302Abstract: The portable abrasive tool comprises a flat motor composed of a rotor having a coil disk in the form of a disk on which multiple coil pieces are arranged in the circumferential direction about the output shaft when seen in the direction of the axis line of the output shaft and a stator having magnets arranged in the manner that the magnetic flux passes through the coil disk in the direction of the axis line of the output shaft, and an abrasive part connected to one end of the output shaft of the flat motor.Type: ApplicationFiled: November 8, 2010Publication date: May 12, 2011Inventors: Hideyuki Tanimoto, Takuya Konnai, Kouji Sagawa