Patents by Inventor Ken Nakano
Ken Nakano 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: 11912952Abstract: A material comprising: a support 10; and a brush layer 20 containing a brush-like polymer chain assemblage 21 formed of a plurality of polymer chains and a swelling liquid 22, in which a brush layer 20 is swollen with the swelling liquid 22, the brush layer 20 retaining on the surface a lubricating liquid 30, and the swelling liquid 22 contained in the brush layer 20 and the lubricating liquid 30 being phase-separated to form a liquid-liquid phase separation interface 40 in between and a sliding system using the material.Type: GrantFiled: December 1, 2020Date of Patent: February 27, 2024Assignees: KYOTO UNIVERSITY, NATIONAL INSTITUTE OF TECHNOLOGY, NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITYInventors: Yoshinobu Tsujii, Keita Sakakibara, Takaya Sato, Hiroyuki Arafune, Ken Nakano, Mayu Miyazaki
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Patent number: 11866011Abstract: A blade attachment tool includes a first support member supported by a pressing support portion supporting a blade formed of an elastic member configured to wipe/scrape liquid/solids spreading on an abutment surface by being pressed against the abutment surface and being long in one direction such that the blade is pressed against the abutment surface with a predetermined pressing force, a second support member supported to swing about a swing shaft extending in a longitudinal direction of the blade with respect to the first support member and configured such that a base end side of the blade is attached thereto, and an energizing member configured to apply a reaction force to a friction force that causes the second support member to swing about the swing shaft with respect to the first support member when the blade is pressed against the abutment surface to slide relatively to the abutment surface.Type: GrantFiled: March 4, 2021Date of Patent: January 9, 2024Inventors: Hironori Yamaguchi, Hirofumi Miyata, Toshikazu Taura, Hirokazu Matsukawa, Tomoki Hachida, Ken Nakano
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Patent number: 11740581Abstract: An elastic member that comes into contact with a moving body that moves in a predetermined moving direction to scrape off a deposit on the moving body includes: a stress reducer that is provided at a contact end on a side to be in contact with the moving body and reduces vibration of internal stress generated due to contact between the moving body and the elastic member, wherein the stress reducer extends in a direction that is not perpendicular to the moving direction when the elastic member comes in contact with the moving body.Type: GrantFiled: May 6, 2022Date of Patent: August 29, 2023Assignee: KONICA MINOLTA, INC.Inventors: Junji Murauchi, Ken Nakano
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Publication number: 20230034470Abstract: A material comprising: a support 10; and a brush layer 20 containing a brush-like polymer chain assemblage 21 formed of a plurality of polymer chains and a swelling liquid 22, in which a brush layer 20 is swollen with the swelling liquid 22, the brush layer 20 retaining on the surface a lubricating liquid 30, and the swelling liquid 22 contained in the brush layer 20 and the lubricating liquid 30 being phase-separated to form a liquid-liquid phase separation interface 40 in between and a sliding system using the material.Type: ApplicationFiled: December 1, 2020Publication date: February 2, 2023Inventors: Yoshinobu TSUJII, Keita SAKAKIBARA, Takaya SATO, Hiroyuki ARAFUNE, Ken NAKANO, Mayu MIYAZAKI
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Publication number: 20220373958Abstract: An elastic member that comes into contact with a moving body that moves in a predetermined moving direction to scrape off a deposit on the moving body includes: a stress reducer that is provided at a contact end on a side to be in contact with the moving body and reduces vibration of internal stress generated due to contact between the moving body and the elastic member, wherein the stress reducer extends in a direction that is not perpendicular to the moving direction when the elastic member comes in contact with the moving body.Type: ApplicationFiled: May 6, 2022Publication date: November 24, 2022Inventors: Junji MURAUCHI, Ken NAKANO
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Patent number: 11507012Abstract: A cleaning device includes a cleaner that cleans a body to be cleaned, wherein the cleaner includes: an elastic member in which a contact portion in contact with the body to be cleaned is formed in an uneven shape continuous in a predetermined direction; and a support member that supports the elastic member, and the cleaner is configured so that a contact pressure of the elastic member to the body to be cleaned is constant in the predetermined direction.Type: GrantFiled: April 13, 2022Date of Patent: November 22, 2022Assignee: KONICA MINOLTA, INC.Inventors: Yoshiki Nakane, Ken Nakano
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Publication number: 20220342357Abstract: A cleaning device includes a cleaner that cleans a body to be cleaned, wherein the cleaner includes: an elastic member in which a contact portion in contact with the body to be cleaned is formed in an uneven shape continuous in a predetermined direction; and a support member that supports the elastic member, and the cleaner is configured so that a contact pressure of the elastic member to the body to be cleaned is constant in the predetermined direction.Type: ApplicationFiled: April 13, 2022Publication date: October 27, 2022Inventors: Yoshiki NAKANE, Ken NAKANO
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Patent number: 11274176Abstract: A composite including a plurality of block copolymer chains dispersed in a base polymer, the block copolymer chains including a polymer block (A) and a polymer block (B) having lower affinity for the base polymer than that of the polymer block (A), wherein each of the block copolymer chains has the polymer block (A) at two or more locations of the block copolymer chain, and in at least some of the block copolymer chains, the polymer blocks (A) are at least partially located in the base polymer and the polymer blocks (B) are at least partially exposed from the base polymer.Type: GrantFiled: March 2, 2018Date of Patent: March 15, 2022Assignees: NATIONAL INSTITUTE OF TECHNOLOGY, NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY, KYOTO UNIVERSITY, NISSHINBO HOLDINGS INC.Inventors: Takaya Sato, Hiroyuki Arafune, Takashi Morinaga, Saika Honma, Toshio Kamijo, Ken Nakano, Yoshinobu Tsujii
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Publication number: 20220074813Abstract: A method for diagnosing a rolling device (10) including an outer member (1), an inner member (3), and rolling elements (5) includes: applying an AC voltage to an electric circuit including the outer member (1), the rolling elements (5), and the inner member (3); measuring an impedance and a phase angle of the electric circuit when the AC voltage is applied; and measuring a dielectric constant of a lubricant at least one of between the outer member (1) and the rolling elements (5) and between the inner member (3) and the rolling elements (5) based on the measured impedance and the measured phase angle.Type: ApplicationFiled: January 10, 2020Publication date: March 10, 2022Applicant: NSK LTD,Inventors: Taisuke MARUYAMA, Masayuki MAEDA, Ken NAKANO
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Patent number: 11178493Abstract: An electroacoustic transducer includes: a diaphragm; a magnetic circuit having a magnetic gap; a frame that holds the diaphragm and the magnetic circuit; a voice coil having one end portion positioned within the magnetic gap and the other end portion coupled to the diaphragm; and a low friction material that is disposed in a sliding portion formed by the voice coil and the magnetic circuit, and includes polymer compounds swollen with liquid.Type: GrantFiled: March 26, 2020Date of Patent: November 16, 2021Assignees: Panasonic Corporation, KYOTO UNIVERSITY, National University Corporation YOKOHAMA National UniversityInventors: Hidetoshi Hiraoka, Yoshinobu Tsujii, Keita Sakakibara, Ken Nakano
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Patent number: 11168170Abstract: A clearance narrowing material containing a brush-shaped polymer chain aggregate formed of multiple polymer chains immobilized on a substrate. The invention provides a clearance narrowing material which can effectively prevent fluid leakage through a clearance and which does not disturb relative movement of members to form a clearance, and can realize an article in which fluid leakage through a clearance can be effectively prevented and the members to form a clearance can move smoothly.Type: GrantFiled: April 25, 2018Date of Patent: November 9, 2021Assignees: KYOTO UNIVERSITY, NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY, NATIONAL INSTITUTE OF TECHNOLOGYInventors: Chiharu Tadokoro, Takuo Nagamine, Yoshinobu Tsujii, Keita Sakakibara, Ken Nakano, Hitoshi Hattori, Shinya Sasaki, Takaya Sato
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Publication number: 20210188216Abstract: A blade attachment tool includes a first support member supported by a pressing support portion supporting a blade formed of an elastic member configured to wipe/scrape liquid/solids spreading on an abutment surface by being pressed against the abutment surface and being long in one direction such that the blade is pressed against the abutment surface with a predetermined pressing force, a second support member supported to swing about a swing shaft extending in a longitudinal direction of the blade with respect to the first support member and configured such that a base end side of the blade is attached thereto, and an energizing member configured to apply a reaction force to a friction force that causes the second support member to swing about the swing shaft with respect to the first support member when the blade is pressed against the abutment surface to slide relatively to the abutment surface.Type: ApplicationFiled: March 4, 2021Publication date: June 24, 2021Applicant: BANDO CHEMICAL INDUSTRIES, LTD.Inventors: Hironori YAMAGUCHI, Hirofumi MIYATA, Toshikazu TAURA, Hirokazu MATSUKAWA, Tomoki HACHIDA, Ken NAKANO
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Patent number: 10882962Abstract: Using an organic compound having a bottle brush structure, a material having softness and resilience and having excellent low-friction performance (SRT material) can be provided. Preferably, the SRT material contains a reinforcing filler, and may contain a lubricating liquid to be gelled.Type: GrantFiled: September 28, 2018Date of Patent: January 5, 2021Assignee: KYOTO UNIVERSITYInventors: Yoshinobu Tsujii, Keita Sakakibara, Yoshihiko Shimizu, Hiroshi Watanabe, Takaya Sato, Ken Nakano, Hitoshi Hattori
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Publication number: 20200228900Abstract: An electroacoustic transducer includes: a diaphragm; a magnetic circuit having a magnetic gap; a frame that holds the diaphragm and the magnetic circuit; a voice coil having one end portion positioned within the magnetic gap and the other end portion coupled to the diaphragm; and a low friction material that is disposed in a sliding portion formed by the voice coil and the magnetic circuit, and includes polymer compounds swollen with liquid.Type: ApplicationFiled: March 26, 2020Publication date: July 16, 2020Applicants: PANASONIC CORPORATION, KYOTO UNIVERSITY, National University Corporation YOKOHAMA National UniversityInventors: Hidetoshi HIRAOKA, Yoshinobu TSUJII, Keita SAKAKIBARA, Ken NAKANO
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Publication number: 20200191195Abstract: A countermeasure to seal squealing is performed at a low price using an extremely simple configuration without greatly modifying constituent elements of a seal which costs a great amount of time and money. An annular shape of grease lip portions is not symmetrical to a rotational center of a fixing member. Therefore, a relative rotational center of contacting target portions of the grease lip portions is eccentric by a distance with respect to a rotational center of a rotating shaft. When a slinger rotates, a friction force is generated between the contacting target portions of the grease lip portions and a flange surface. In a housing which supports the fixing member, torsion is generated by the friction force and a restoring force which is centered on the relative rotational center acts on the contacting target portions against the torsion.Type: ApplicationFiled: July 19, 2018Publication date: June 18, 2020Inventors: Shigenobu HONDA, Tetsuya ENDO, Chiharu TADOKORO, Takuo NAGAMINE, Ken NAKANO
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Publication number: 20200181309Abstract: A clearance narrowing material containing a brush-shaped polymer chain aggregate funned of multiple polymer chains immobilized on a substrate. The invention provides a clearance narrowing material which can effectively prevent fluid leakage through a clearance and which does not disturb relative movement of members to form a clearance, and can realize an article in which fluid leakage through a clearance can be effectively prevented and the members to form a clearance can move smoothly.Type: ApplicationFiled: April 25, 2018Publication date: June 11, 2020Inventors: Chiharu TADOKORO, Takuo NAGAMINE, Yoshinobu TSUJII, Keita SAKAKIBARA, Ken NAKANO, Hitoshi HATTORI, Shinya SASAKI, Takaya SATO
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Publication number: 20200002455Abstract: A composite including a plurality of block copolymer chains dispersed in a base polymer, the block copolymer chains including a polymer block (A) and a polymer block (B) having lower affinity for the base polymer than that of the polymer block (A), wherein each of the block copolymer chains has the polymer block (A) at two or more locations of the block copolymer chain, and in at least some of the block copolymer chains, the polymer blocks (A) are at least partially located in the base polymer and the polymer blocks (B) are at least partially exposed from the base polymer.Type: ApplicationFiled: March 2, 2018Publication date: January 2, 2020Applicants: NATIONAL INSTITUTE OF TECHNOLOGY, NATIONAL UNIVERSITY CORPORATION YOKOHAMA NATIONAL UNIVERSITY, KYOTO UNIVERSITY, NISSHINBO HOLDINGS INC.Inventors: Takaya SATO, Hiroyuki ARAFUNE, Takashi MORINAGA, Saika HONMA, Toshio KAMIJO, Ken NAKANO, Yoshinobu TSUJII
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Patent number: 10429373Abstract: A method is for diagnosing a rolling device comprising an outer member, an inner member, and a rolling element. The method includes applying an alternating voltage to an electric circuit configured by the outer member, the rolling element and the inner member, measuring an impedance and a phase of the electric circuit when the alternating voltage is applied to the electric circuit, and calculating a lubrication film thickness and a metallic contact ratio between the outer member and the rolling element and/or between the inner member and the rolling element, based on a measured impedance and a measured phase.Type: GrantFiled: December 13, 2017Date of Patent: October 1, 2019Assignee: NSK LTD.Inventors: Masayuki Maeda, Taisuke Maruyama, Ken Nakano
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Patent number: 10377964Abstract: The invention provides a magneto-rheological grease composition which contains (a) a base oil including at least 30% by mass of an ether type synthetic oil; (b) an aliphatic diurea thickener; and (c) magnetic particles in an amount of 45 to 95% by mass based on the total mass of the composition. The magneto-rheological grease composition can show superior thermal stability, dispersion stability and magneto-rheological properties.Type: GrantFiled: November 16, 2012Date of Patent: August 13, 2019Assignees: KYODO YUSHI CO., LTD., YOKOHAMA NATIONAL UNIVERSITYInventors: Hiroshi Kimura, Shinya Kondo, Tetsuo Ogawa, Makoto Hayama, Koji Maesaka, Shin Morishita, Ken Nakano, Toshihiko Shiraishi
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Publication number: 20190128866Abstract: A method is for diagnosing a rolling device comprising an outer member, an inner member, and a rolling element. The method includes applying an alternating voltage to an electric circuit configured by the outer member, the rolling element and the inner member, measuring an impedance and a phase of the electric circuit when the alternating voltage is applied to the electric circuit, and calculating a lubrication film thickness and a metallic contact ratio between the outer member and the rolling element and/or between the inner member and the rolling element, based on a measured impedance and a measured phase.Type: ApplicationFiled: December 13, 2017Publication date: May 2, 2019Applicant: NSK LTD.Inventors: Masayuki MAEDA, Taisuke MARUYAMA, Ken NAKANO