Patents by Inventor Takeshi Saitou
Takeshi Saitou 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: 11858101Abstract: A driver capable of suppressing increase in a load torque of a motor when a striking mechanism is moved by the torque of the motor against a force of a first moving mechanism is provided. The driver includes a striking mechanism 12 movable in a first direction B1 and a second direction B2 opposite to the first direction B1 and a first moving mechanism configured to move the striking mechanism 12 in the first direction B1 to strike a fastener, and the driver further includes a motor, a second moving mechanism 45 rotated by the torque of the motor and configured to move the striking mechanism 12 in the second direction against a force of the first moving mechanism, and torque suppression mechanisms 45A to 45H configured to suppress increase in the torque of the motor when the striking mechanism 12 is moved in the second direction B2.Type: GrantFiled: November 4, 2022Date of Patent: January 2, 2024Assignee: KOKI HOLDINGS CO., LTD.Inventors: Takeshi Saitou, Tetsuhito Shige, Daiki Kiyohara, Masashi Nishida
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Publication number: 20230114706Abstract: According to an embodiment of the present invention, there is provided a method of producing a plastic optical fiber having a small transmission loss. The method includes subjecting the plastic optical fiber to heat treatment. The plastic optical fiber includes a core portion and a cladding portion, the core portion is formed of a perfluorinated resin and having a refractive index gradient in a radial direction thereof.Type: ApplicationFiled: March 25, 2021Publication date: April 13, 2023Applicant: NITTO DENKO CORPORATIONInventors: Hiroshi Ohmura, Yasuaki Okada, Takeshi Saitou
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Publication number: 20230050091Abstract: A driver capable of suppressing increase in a load torque of a motor when a striking mechanism is moved by the torque of the motor against a force of a first moving mechanism is provided. The driver includes a striking mechanism 12 movable in a first direction B1 and a second direction B2 opposite to the first direction B1 and a first moving mechanism configured to move the striking mechanism 12 in the first direction B1 to strike a fastener, and the driver further includes a motor, a second moving mechanism 45 rotated by the torque of the motor and configured to move the striking mechanism 12 in the second direction against a force of the first moving mechanism, and torque suppression mechanisms 45A to 45H configured to suppress increase in the torque of the motor when the striking mechanism 12 is moved in the second direction B2.Type: ApplicationFiled: November 4, 2022Publication date: February 16, 2023Inventors: Takeshi SAITOU, Tetsuhito SHIGE, Daiki KIYOHARA, Masashi NISHIDA
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Patent number: 11491629Abstract: A driver capable of suppressing increase in a load torque of a motor when a striking mechanism is moved by the torque of the motor against a force of a first moving mechanism is provided. The driver includes a striking mechanism 12 movable in a first direction B1 and a second direction B2 opposite to the first direction B1 and a first moving mechanism configured to move the striking mechanism 12 in the first direction B1 to strike a fastener, and the driver further includes a motor, a second moving mechanism 45 rotated by the torque of the motor and configured to move the striking mechanism 12 in the second direction against a force of the first moving mechanism, and torque suppression mechanisms 45A to 45H configured to suppress increase in the torque of the motor when the striking mechanism 12 is moved in the second direction B2.Type: GrantFiled: March 30, 2018Date of Patent: November 8, 2022Assignee: KOKI HOLDINGS CO., LTD.Inventors: Takeshi Saitou, Tetsuhito Shige, Daiki Kiyohara, Masashi Nishida
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Publication number: 20220176532Abstract: A driving device includes: a main body; a striking part movably supported by the main body; a handle protruding from the main body; and a nose part attached to the main body and holding a fastener before being hit by the striking part, the nose part movably accommodating the striking part and having an injection path for guiding the fastener and an injection port connecting with the injection path and firing the fastener, an opening extending from the injection port toward the handle being provided on a handle side of the injection path, and a width of the opening being larger than an outer diameter of a head of the fastener in a plan view perpendicular to a linear moving direction of the striking part.Type: ApplicationFiled: July 28, 2020Publication date: June 9, 2022Inventors: Tomoya NAKAJIMA, Jun ENTA, Takeshi SAITOU
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Publication number: 20210101272Abstract: A driver capable of suppressing increase in a load torque of a motor when a striking mechanism is moved by the torque of the motor against a force of a first moving mechanism is provided. The driver includes a striking mechanism 12 movable in a first direction B1 and a second direction B2 opposite to the first direction B1 and a first moving mechanism configured to move the striking mechanism 12 in the first direction B1 to strike a fastener, and the driver further includes a motor, a second moving mechanism 45 rotated by the torque of the motor and configured to move the striking mechanism 12 in the second direction against a force of the first moving mechanism, and torque suppression mechanisms 45A to 45H configured to suppress increase in the torque of the motor when the striking mechanism 12 is moved in the second direction B2.Type: ApplicationFiled: March 30, 2018Publication date: April 8, 2021Inventors: Takeshi SAITOU, Tetsuhito SHIGE, Daiki KIYOHARA, Masashi NISHIDA
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Patent number: 10371211Abstract: A bearing structure comprises: two bearings arranged in an axis direction and having outer rings and inner rings; and a spacer interposed between the bearings. The spacer comprises: a ring-like outer ring spacer interposed between the outer rings of the two bearings arranged in the axis direction, and having an insertion hole penetrating the outer ring spacer in a radial direction RD and into which a jig is to be inserted; and a ring-like inner ring spacer interposed between the inner rings of the two bearings arranged in the axis direction, and having an engagement part to make engagement with the jig inserted into the insertion hole. The one bearing is capable of being pulled out together with the spacer from a rotary shaft supported by the inner rings by pulling the jig in the axis direction inserted into the insertion hole and engaged with the engagement part.Type: GrantFiled: November 2, 2018Date of Patent: August 6, 2019Assignee: FANUC CORPORATIONInventor: Takeshi Saitou
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Publication number: 20190178293Abstract: A bearing structure comprises: two bearings arranged in an axis direction and having outer rings and inner rings; and a spacer interposed between the bearings. The spacer comprises: a ring-like outer ring spacer interposed between the outer rings of the two bearings arranged in the axis direction, and having an insertion hole penetrating the outer ring spacer in a radial direction RD and into which a jig is to be inserted; and a ring-like inner ring spacer interposed between the inner rings of the two bearings arranged in the axis direction, and having an engagement part to make engagement with the jig inserted into the insertion hole. The one bearing is capable of being pulled out together with the spacer from a rotary shaft supported by the inner rings by pulling the jig in the axis direction inserted into the insertion hole and engaged with the engagement part.Type: ApplicationFiled: November 2, 2018Publication date: June 13, 2019Applicant: FANUC CORPORATIONInventor: Takeshi SAITOU
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Patent number: 10230286Abstract: An electric motor includes a stator, a rotor provided rotatably about a predetermined rotational axis line relative to the stator, a cooling fan configured to rotate an impeller through a fan motor fixed to the stator, and a coupling unit configured to detachably couple the rotor and the impeller of the cooling fan. The coupling unit couples the rotor and the impeller while the fan motor is stopped, and decouples the rotor and the impeller after the fan motor starts.Type: GrantFiled: May 5, 2017Date of Patent: March 12, 2019Assignee: FANUC CORPORATIONInventor: Takeshi Saitou
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Publication number: 20180002819Abstract: An inner surface of a tank 10 is formed by joining a large number of metal plates 21, 23 and 25 to one another by welding. Before injecting pressure resistance testing water into an inside of the tank 10 in order to test pressure resistance of the tank 10, a corrosion inhibitor 31 is applied to welds 27 between the metal plates 21, 23 and 25 on a bottom part of the tank 10. A total bottom part area A1 of the welds 27 to be applied with the corrosion inhibitor 31 on the bottom part of the tank 10 is made wider than a total non-bottom-part area A2 of the welds to be applied with the corrosion inhibitor 31 on the inner surface of the tank 10 other than the bottom part of the tank 10.Type: ApplicationFiled: October 26, 2015Publication date: January 4, 2018Applicant: IHI CorporationInventor: Takeshi SAITOU
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Publication number: 20170366071Abstract: An electric motor includes a stator, a rotor provided rotatably about a predetermined rotational axis line relative to the stator, a cooling fan configured to rotate an impeller through a fan motor fixed to the stator, and a coupling unit configured to detachably couple the rotor and the impeller of the cooling fan. The coupling unit couples the rotor and the impeller while the fan motor is stopped, and decouples the rotor and the impeller after the fan motor starts.Type: ApplicationFiled: May 5, 2017Publication date: December 21, 2017Applicant: FANUC CORPORATIONInventor: Takeshi SAITOU
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Patent number: 9529131Abstract: A polarizing plate according to an embodiment of the present invention includes a polarizing film having a thickness of 10 ?m or less and a protective layer provided on at least one side of the polarizing film through intermediation of an adhesion layer. The adhesion layer has a thickness of 0.7 ?m or more, and the adhesion layer has a percentage of bulk water absorption of 10 wt % or less.Type: GrantFiled: August 3, 2015Date of Patent: December 27, 2016Assignee: NITTO DENKO CORPORATIONInventors: Takeharu Kitagawa, Takashi Kamijo, Takeshi Saitou
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Patent number: 9493684Abstract: The present invention provides a polarizer protective film excellent in optical properties (retardation and haze) and excellent in the adhesion property between a polarizer and a polarizer protective film (in particular, under high temperature and high humidity conditions). The polarizer protective film of the present invention includes a (meth)acrylic resin film and an easy-adhesion layer disposed on at least one side of the film. The easy-adhesion layer is formed from an aqueous (meth)acrylic resin dispersion.Type: GrantFiled: November 28, 2008Date of Patent: November 15, 2016Assignees: NITTO DENKO CORPORATION, NIPPON SHOKUBAI CO., LTD.Inventor: Takeshi Saitou
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Patent number: 9354373Abstract: A method of producing a polarizing plate according to an embodiment of the present invention includes: stretching and dyeing a laminate including a resin substrate and a polyvinyl alcohol-based resin layer formed on one side of the resin substrate to produce a polarizing film on the resin substrate; laminating a first protective film on the polarizing film on an opposite side to the resin substrate; and peeling the resin substrate, followed by laminating a second protective film on the polarizing film on a side from which the resin substrate has been peeled. The laminating of at least one of the first protective film and the second protective film is performed through an adhesive having a moisture content of 10% or less.Type: GrantFiled: December 3, 2013Date of Patent: May 31, 2016Assignee: NITTO DENKO CORPORATIONInventors: Shusaku Goto, Takeshi Saitou, Masashi Shinagawa, Yuuki Nakano, Minoru Miyatake
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Publication number: 20160033699Abstract: A polarizing plate according to an embodiment of the present invention includes a polarizing film having a thickness of 10 ?m or less and a protective layer provided on at least one side of the polarizing film through intermediation of an adhesion layer. The adhesion layer has a thickness of 0.7 ?m or more, and the adhesion layer has a percentage of bulk water absorption of 10 wt % or less.Type: ApplicationFiled: July 17, 2015Publication date: February 4, 2016Applicant: NITTO DENKO CORPORATIONInventors: Takeharu Kitagawa, Takashi Kamijo, Takeshi Saitou
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Publication number: 20160033700Abstract: A polarizing plate according to an embodiment of the present invention includes a polarizing film having a thickness of 10 ?m or less and a protective layer provided on at least one side of the polarizing film through intermediation of an adhesion layer. The adhesion layer has a thickness of 0.7 ?m or more, and the adhesion layer has a percentage of bulk water absorption of 10 wt % or less.Type: ApplicationFiled: August 3, 2015Publication date: February 4, 2016Applicant: NITTO DENKO CORPORATIONInventors: Takeharu Kitagawa, Takashi Kamijo, Takeshi Saitou
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Patent number: 8854577Abstract: The present invention provides a polarizer protective film capable of suppressing blocking that occurs in taking up the film. The polarizer protective film of the present invention includes a (meth)acrylic resin film and an easy-adhesion layer formed of an easy-adhesive composition including a urethane resin and fine particles. The fine particles include preferably colloidal silica.Type: GrantFiled: June 1, 2009Date of Patent: October 7, 2014Assignees: Nitto Denko Corporation, Nippon Shokubai Co., Ltd.Inventors: Tatsuya Yamasaki, Takeshi Saitou, Hiroyuki Takao, Youichirou Sugino, Yuuji Yamashita
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Publication number: 20140285887Abstract: A method of producing a polarizing plate according to an embodiment of the present invention includes: stretching and dyeing a laminate including a resin substrate and a polyvinyl alcohol-based resin layer formed on one side of the resin substrate to produce a polarizing film on the resin substrate; laminating a first protective film on the polarizing film on an opposite side to the resin substrate; and peeling the resin substrate, followed by laminating a second protective film on the polarizing film on a side from which the resin substrate has been peeled. The laminating of at least one of the first protective film and the second protective film is performed through an adhesive having a moisture content of 10% or less.Type: ApplicationFiled: December 3, 2013Publication date: September 25, 2014Applicant: NITTO DENKO CORPORATIONInventors: Shusaku Goto, Takeshi Saitou, Masashi Shinagawa, Yuuki Nakano, Minoru Miyatake
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Publication number: 20140091653Abstract: A motor with an air-cooling structure having high cooling efficiency and capable of avoiding an increase in the size of the motor. A stator of the motor has an air flow channel being formed in the stator near outer circumferences of the slots. Air conveyed from a fan motor collides with an inner surface of an end at a spindle side of the stator, while cooling the slots through the air flow channel. The flowing direction of air which collides with the housing is inverted by a redirecting part, and the air is returned to the fan motor side while cooling the outside of the stator.Type: ApplicationFiled: September 19, 2013Publication date: April 3, 2014Applicant: FANUC CORPORATIONInventor: Takeshi Saitou
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Publication number: 20110157525Abstract: The present invention provides a polarizer protective film capable of suppressing blocking that occurs in taking up the film. The polarizer protective film of the present invention includes a (meth)acrylic resin film and an easy-adhesion layer formed of an easy-adhesive composition including a urethane resin and fine particles. The fine particles include preferably colloidal silica.Type: ApplicationFiled: June 1, 2009Publication date: June 30, 2011Applicants: NITTO DENKO CORPORATION, NIPPON SHOKUBAI CO., LTD.Inventors: Tatsuya Yamasaki, Takeshi Saitou, Hiroyuki Takao, Youichirou Sugino, Yuuji Yamashita