Patents by Inventor Toshinori YASUTOMI
Toshinori YASUTOMI 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: 11926027Abstract: A driving tool includes: a striking unit striking a fastener by being actuated in a first direction; a rack on the striking unit; a wheel; and a second transmission portion on the wheel and capable of being engaged with and released from the rack. The striking unit can be actuated in a second direction when the second transmission portion is engaged with the rack, and the striking unit can be actuated in the first direction when the second transmission portion is released from the rack. The second transmission portion includes: a tooth portion arranged along a rotation direction of the wheel and turned in a predetermined direction to be engaged with and released from the rack; and a movable piece actuated in the predetermined direction to be engaged with the rack and actuated in a different direction from the predetermined direction to be released from the rack.Type: GrantFiled: September 13, 2019Date of Patent: March 12, 2024Assignee: KOKI HOLDINGS CO., LTD.Inventors: Takashi Ueda, Koji Shioya, Sotaro Aizawa, Toshinori Yasutomi
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Publication number: 20230381937Abstract: In a driver machine 10, a blank firing prevention mechanism 100 has a feeder position sensor 105 that detects the prohibition position of a feeder 64 of a magazine 60. When a control unit 20 detects the prohibition position of the feeder 64 on the basis of a detection signal from the feeder position sensor 105, the control unit 20 prohibits driving of a motor 52. Thus it is possible to prevent blank firing of a striking part 44. The feeder position sensor 105 is provided to an ejection part 34. Thus it is unnecessary for a wire, which connects the control unit 20 and the feeder position sensor 105, to be extended to the outside of a housing 14, in comparison with a structure in which the feeder position sensor 105 is provided in a magazine case 62 of the magazine 60.Type: ApplicationFiled: October 8, 2021Publication date: November 30, 2023Applicant: Koki Holdings Co., Ltd.Inventors: Tatsuhiro TAGO, Toshinori YASUTOMI
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Publication number: 20230211483Abstract: A driver including: an ejection part to which a fastener is supplied; a driver blade which moves from a first position toward a second position and drives the fastener into a driven member; and a rack provided to the driver blade. The driver further includes: a rotary component engaging with the rack and moving the driver blade from the second position to the first position; and a lock plate engaging with the rack. The driver blade moves from the second position to the first position while the rotary component rotates once, the rotary component is released from engaging with the rack after the driver blade moves from the second position to the first position, and moves from the first position to the second position, and the lock plate is engageable with the rack when the driver blade stops before reaching the second position from the first position.Type: ApplicationFiled: February 23, 2023Publication date: July 6, 2023Inventors: Shinichiro SATO, Takashi UEDA, Yutaka ITO, Jyun ENTA, Toshinori YASUTOMI, Yoshiichi KOMAZAKI, Kenji KOBORI
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Publication number: 20230137720Abstract: A working tool includes a magazine unit in which a plurality of connected fasteners are stored in a rolled shape, an ejection unit to which the fastener is fed, a driver blade configured to strike the fastener held in the ejection unit to one side in a first direction, an electric motor configured to drive the driver blade by receiving an electric power, a feeder unit capable of moving in a second direction crossing the first direction and configured to feed the fastener stored in the magazine unit to the ejection unit by moving to one side in the second direction, a solenoid configured to drive the feeder unit by receiving an electric power, and a control unit configured to allow the solenoid to drive when a load of the electric motor satisfies a first condition.Type: ApplicationFiled: October 28, 2022Publication date: May 4, 2023Inventors: Sotaro AIZAWA, Toshinori YASUTOMI
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Publication number: 20230090859Abstract: A driving device capable of reducing the load in any of the plurality of engaging members is provided. The driving device includes an ejection unit to which a fastener is supplied, a striking unit configured to strike the fastener, a rack provided on the striking unit, a wheel provided rotatably, and a plurality of pins provided on the wheel and engaged with and released from the rack, wherein the plurality of pins can change positions in the wheel, and the plurality of pins include a pin located at a first position where the pin can be engaged with the rack and a pin which is located behind the pin in a rotation direction of the wheel and located at a second position where the pin cannot be engaged with the rack when the striking unit is actuated in the direction of striking the fastener.Type: ApplicationFiled: January 29, 2021Publication date: March 23, 2023Inventor: Toshinori YASUTOMI
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Patent number: 11590638Abstract: A driver including: an ejection part to which a fastener is supplied; a driver blade which moves from a first position toward a second position and drives the fastener into a driven member; and a rack provided to the driver blade. The driver further includes: a rotary component engaging with the rack and moving the driver blade from the second position to the first position; and a lock plate engaging with the rack. The driver blade moves from the second position to the first position while the rotary component rotates once, the rotary component is released from engaging with the rack after the driver blade moves from the second position to the first position, and moves from the first position to the second position, and the lock plate is engageable with the rack when the driver blade stops before reaching the second position from the first position.Type: GrantFiled: October 16, 2020Date of Patent: February 28, 2023Assignee: KOKI HOLDINGS CO., LTD.Inventors: Shinichiro Sato, Takashi Ueda, Yutaka Ito, Jyun Enta, Toshinori Yasutomi, Yoshiichi Komazaki, Kenji Kobori
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Patent number: 11571792Abstract: A driver capable of achieving favorable workmanship at the time of driving of a fastener into a workpiece to be driven is provided.Type: GrantFiled: June 29, 2018Date of Patent: February 7, 2023Assignee: KOKI HOLDINGS CO., LTD.Inventors: Toshinori Yasutomi, Hironori Mashiko, Yuki Mitoma
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Patent number: 11446803Abstract: A driver includes a pressure chamber, a striking portion, an operation member, and a contact member, and can select a first mode and a second mode. The driver further includes a first ventilation passage, a second ventilation passage, and opening/closing mechanisms. The opening/closing mechanisms have a first state to open the first ventilation passage and close the second ventilation passage in the first mode, a second state, when an operation force is applied to the operation member within a time from when the second mode is selected and the contact member contacts a workpiece, to close the first ventilation passage and open the second ventilation passage, and a third state, when an operation force is applied to the operation member within a time from when the second mode is selected and the contact member is separated from the workpiece, to close the second ventilation passage.Type: GrantFiled: January 25, 2019Date of Patent: September 20, 2022Assignee: KOKI HOLDINGS CO., LTD.Inventor: Toshinori Yasutomi
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Patent number: 11207768Abstract: A fastener driving machine provided with a mechanism to lubricate pins or racks is realized. A fastener driving machine includes a driver blade, pins, and a lubricant feeding mechanism. The driver blade can reciprocate in a first direction and a second direction opposite to each other, and hits a fastener when the driver blade moves in the first direction. The pins respectively engage with racks provided on the driver blade to move the driver blade in the second direction. The lubricant feeding mechanism supplies lubricant to the racks and the pins.Type: GrantFiled: February 23, 2018Date of Patent: December 28, 2021Assignee: KOKI HOLDINGS CO., LTD.Inventors: Jun Enta, Seiichi Kodato, Takashi Ueda, Toshinori Yasutomi
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Publication number: 20210308852Abstract: A driving tool includes: a striking unit striking a fastener by being actuated in a first direction; a rack on the striking unit; a wheel; and a second transmission portion on the wheel and capable of being engaged with and released from the rack. The striking unit can be actuated in a second direction when the second transmission portion is engaged with the rack, and the striking unit can be actuated in the first direction when the second transmission portion is released from the rack. The second transmission portion includes: a tooth portion arranged along a rotation direction of the wheel and turned in a predetermined direction to be engaged with and released from the rack; and a movable piece actuated in the predetermined direction to be engaged with the rack and actuated in a different direction from the predetermined direction to be released from the rack.Type: ApplicationFiled: September 13, 2019Publication date: October 7, 2021Inventors: Takashi UEDA, Koji SHIOYA, Sotaro AIZAWA, Toshinori YASUTOMI
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Publication number: 20210213595Abstract: To provide a driver that can be reduced in the amount of gas to be injected into a pressure chamber. The driver has: an impactor configured to hit a stopper by moving from a first position toward a second position; a pressure chamber to be filled with gas for moving the impactor from the first position toward the second position; a control mechanism configured to move the impactor from the second position toward the first position; and a gas injection portion configured to inject gas into the pressure chamber, wherein the impactor is capable of taking a standby position between the second position and the first position, and the control mechanism is configured to stop the impactor at an adjustment position closer to the second position than the standby position before gas is injected into the pressure chamber.Type: ApplicationFiled: March 26, 2021Publication date: July 15, 2021Inventors: Toshinori YASUTOMI, Shinichirou SATOU, Kazuhiko FUNABASHI, Yuki MITOMA
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Publication number: 20210138622Abstract: A fastener driving machine provided with a mechanism to lubricate pins or racks is realized. A fastener driving machine includes a driver blade, pins, and a lubricant feeding mechanism. The driver blade can reciprocate in a first direction and a second direction opposite to each other, and hits a fastener when the driver blade moves in the first direction. The pins respectively engage with racks provided on the driver blade to move the driver blade in the second direction. The lubricant feeding mechanism supplies lubricant to the racks and the pins.Type: ApplicationFiled: February 23, 2018Publication date: May 13, 2021Inventors: Jun ENTA, Seiichi KODATO, Takashi UEDA, Toshinori YASUTOMI
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Patent number: 10967491Abstract: To provide a driver that can be reduced in the amount of gas to be injected into a pressure chamber. The driver has: an impactor configured to hit a stopper by moving from a first position toward a second position; a pressure chamber to be filled with gas for moving the impactor from the first position toward the second position; a control mechanism configured to move the impactor from the second position toward the first position; and a gas injection portion configured to inject gas into the pressure chamber, wherein the impactor is capable of taking a standby position between the second position and the first position, and the control mechanism is configured to stop the impactor at an adjustment position closer to the second position than the standby position before gas is injected into the pressure chamber.Type: GrantFiled: June 30, 2017Date of Patent: April 6, 2021Assignee: KOKI HOLDINGS CO., LTD.Inventors: Toshinori Yasutomi, Shinichirou Satou, Kazuhiko Funabashi, Yuki Mitoma
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Publication number: 20210031347Abstract: A driver including: an ejection part to which a fastener is supplied; a driver blade which moves from a first position toward a second position and drives the fastener into a driven member; and a rack provided to the driver blade. The driver further includes: a rotary component engaging with the rack and moving the driver blade from the second position to the first position; and a lock plate engaging with the rack. The driver blade moves from the second position to the first position while the rotary component rotates once, the rotary component is released from engaging with the rack after the driver blade moves from the second position to the first position, and moves from the first position to the second position, and the lock plate is engageable with the rack when the driver blade stops before reaching the second position from the first position.Type: ApplicationFiled: October 16, 2020Publication date: February 4, 2021Inventors: Shinichiro SATO, Takashi UEDA, Yutaka ITO, Jyun ENTA, Toshinori YASUTOMI, Yoshiichi KOMAZAKI, Kenji KOBORI
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Publication number: 20200398412Abstract: A driver includes a pressure chamber, a striking portion, an operation member, and a contact member, and can select a first mode and a second mode. The driver further includes a first ventilation passage, a second ventilation passage, and opening/closing mechanisms. The opening/closing mechanisms have a first state to open the first ventilation passage and close the second ventilation passage in the first mode, a second state, when an operation force is applied to the operation member within a time from when the second mode is selected and the contact member contacts a workpiece, to close the first ventilation passage and open the second ventilation passage, and a third state, when an operation force is applied to the operation member within a time from when the second mode is selected and the contact member is separated from the workpiece, to close the second ventilation passage.Type: ApplicationFiled: January 25, 2019Publication date: December 24, 2020Inventor: Toshinori YASUTOMI
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Publication number: 20200391364Abstract: A driver capable of achieving favorable workmanship at the time of driving of a fastener into a workpiece to be driven is provided.Type: ApplicationFiled: June 29, 2018Publication date: December 17, 2020Inventors: Toshinori YASUTOMI, Hironori MASHIKO, Yuki MITOMA
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Patent number: 10843317Abstract: A driver including: an ejection part to which a fastener is supplied; a driver blade which moves from a first position toward a second position and drives the fastener into a driven member; and a rack provided to the driver blade. The driver further includes: a rotary component engaging with the rack and moving the driver blade from the second position to the first position; and a lock plate engaging with the rack. The driver blade moves from the second position to the first position while the rotary component rotates once, the rotary component is released from engaging with the rack after the driver blade moves from the second position to the first position, and moves from the first position to the second position, and the lock plate is engageable with the rack when the driver blade stops before reaching the second position from the first position.Type: GrantFiled: June 2, 2016Date of Patent: November 24, 2020Assignee: KOKI HOLDINGS CO., LTD.Inventors: Shinichiro Sato, Takashi Ueda, Yutaka Ito, Jyun Enta, Toshinori Yasutomi, Yoshiichi Komazaki, Kenji Kobori
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Publication number: 20190168366Abstract: To provide a driver that can be reduced in the amount of gas to be injected into a pressure chamber. The driver has: an impactor configured to hit a stopper by moving from a first position toward a second position; a pressure chamber to be filled with gas for moving the impactor from the first position toward the second position; a control mechanism configured to move the impactor from the second position toward the first position; and a gas injection portion configured to inject gas into the pressure chamber, wherein the impactor is capable of taking a standby position between the second position and the first position, and the control mechanism is configured to stop the impactor at an adjustment position closer to the second position than the standby position before gas is injected into the pressure chamber.Type: ApplicationFiled: June 30, 2017Publication date: June 6, 2019Inventors: Toshinori YASUTOMI, Shinichirou SATOU, Kazuhiko FUNABASHI, Yuki MITOMA
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Publication number: 20180154505Abstract: A driver including: an ejection part to which a fastener is supplied; a driver blade which moves from a first position toward a second position and drives the fastener into a driven member; and a rack provided to the driver blade. The driver further includes: a rotary component engaging with the rack and moving the driver blade from the second position to the first position; and a lock plate engaging with the rack. The driver blade moves from the second position to the first position while the rotary component rotates once, the rotary component is released from engaging with the rack after the driver blade moves from the second position to the first position, and moves from the first position to the second position, and the lock plate is engageable with the rack when the driver blade stops before reaching the second position from the first position.Type: ApplicationFiled: June 2, 2016Publication date: June 7, 2018Inventors: Shinichiro SATO, Takashi UEDA, Yutaka ITO, Jyun ENTA, Toshinori YASUTOMI, Yoshiichi KOMAZAKI, Kenji KOBORI
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Patent number: 9631869Abstract: A powder supply device 1 includes a powder feed pipe, at least part of which is an expansion/contraction part, a load cell, a pressure indicator, and a controller, wherein the controller obtains a powder weight or a rate of change in powder weight in the feed tank by using a value obtained by subtracting a value proportional to the pressure in the expansion/contraction part from the load applied by the feed tank to the load cell and adding a value proportional to a rate of change in pressure in the expansion/contraction part, and controls the flow rate of the powder to be fed to the outside of the feed tank by using the powder weight or the rate of change in powder weight.Type: GrantFiled: September 4, 2012Date of Patent: April 25, 2017Assignees: DIAMOND ENGINEERING CO., LTD., ELECTRIC POWER DEVELOPMENT CO., LTD.Inventors: Kimihiro Shimono, Takahiro Takeda, Kazutoshi Teraoka, Fumihito Kasagi, Osamu Shiraishi, Takushi Tamamura, Toshinori Yasutomi