Patents by Inventor Katsuyuki Kawashima
Katsuyuki Kawashima 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: 11299184Abstract: A railcar bogie includes: a protection target member of the railcar bogie; and a protective film including an adhesive surface stuck to the protection target member. The protective film is configured such that an impact absorbing layer and a flame-retardant layer are laminated in this order from the protection target member side. The impact absorbing layer is thicker than the flame-retardant layer.Type: GrantFiled: May 1, 2017Date of Patent: April 12, 2022Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Takehiro Nishimura, Yousuke Tsumura, Fumihide Inamura, Katsuyuki Kawashima, Ikko Hanaki, Yuhei Tanaka
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Patent number: 10964131Abstract: A state monitoring device for a plate spring mounted on a railcar bogie is configured to monitor a state of the plate spring, the plate spring including fiber-reinforced resin containing electrically conductive reinforced fibers containing reinforced fibers extending in a longitudinal direction of the plate spring. The state monitoring device includes: an electrode pair provided at both width direction side end surfaces of the plate spring and sandwiching the plate spring, a width direction of the plate spring being perpendicular to the longitudinal direction of the plate spring and a thickness direction of the plate spring; and a measuring unit electrically connected to the electrode pair and configured to measure an electrical characteristic of the plate spring.Type: GrantFiled: January 25, 2016Date of Patent: March 30, 2021Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Masayuki Mitsue, Teruhisa Nakaoka, Tomohei Kobayashi, Katsuyuki Kawashima, Takehiro Nishimura, Yousuke Tsumura
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Patent number: 10703394Abstract: A method of producing an electrode-equipped plate spring of a railcar bogie includes: a resin removing step of partially irradiating a surface of fiber-reinforced resin, prepared by including electrically conductive fibers in resin, of a plate spring with a laser beam to partially remove the resin and partially expose the electrically conductive fibers; and an electrode forming step of attaching an electrode to an exposed region formed by partially exposing the electrically conductive fibers of the fiber-reinforced resin.Type: GrantFiled: September 7, 2016Date of Patent: July 7, 2020Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Takehiro Nishimura, Yousuke Tsumura, Masayuki Mitsue, Teruhisa Nakaoka, Fumihide Inamura, Katsuyuki Kawashima, Akira Todoroki, Yusuke Nishio
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Publication number: 20200079402Abstract: A railcar bogie includes: a protection target member of the railcar bogie; and a protective film including an adhesive surface stuck to the protection target member. The protective film is configured such that an impact absorbing layer and a flame-retardant layer are laminated in this order from the protection target member side. The impact absorbing layer is thicker than the flame-retardant layer.Type: ApplicationFiled: May 1, 2017Publication date: March 12, 2020Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Takehiro NISHIMURA, Yousuke TSUMURA, Fumihide INAMURA, Katsuyuki KAWASHIMA, Ikko HANAKI, Yuhei TANAKA
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Patent number: 10527028Abstract: A piston is cylindrical and includes: a concave spherical portion formed at one of end portions of the piston and having a partially spherical shape; a cylindrical hollow portion formed at the other end portion of the piston; and an oil passage formed between the concave spherical portion and the hollow portion, the concave spherical portion and the hollow portion communicating with each other through the oil passage. The concave spherical portion includes a concave spherical surface formed by forging and having a partially spherical shape. A convex spherical portion of a shoe is supported by the concave spherical surface so as to be slidable and rotatable. An area of contact between the concave spherical surface and a predetermined master ball corresponding to the convex spherical portion is 40% or more of an entire area of the concave spherical surface.Type: GrantFiled: May 2, 2016Date of Patent: January 7, 2020Assignee: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Hideki Tamashima, Koji Matsuhisa, Kazuhiro Ishihara, Katsuyuki Kawashima
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Publication number: 20180257680Abstract: A method of producing an electrode-equipped plate spring of a railcar bogie includes: a resin removing step of partially irradiating a surface of fiber-reinforced resin, prepared by including electrically conductive fibers in resin, of a plate spring with a laser beam to partially remove the resin and partially expose the electrically conductive fibers; and an electrode forming step of attaching an electrode to an exposed region formed by partially exposing the electrically conductive fibers of the fiber-reinforced resin.Type: ApplicationFiled: September 7, 2016Publication date: September 13, 2018Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Takehiro NISHIMURA, Yousuke TSUMURA, Masayuki MITSUE, Teruhisa NAKAOKA, Fumihide INAMURA, Katsuyuki KAWASHIMA, Akira TODOROKI, Yusuke NISHIO
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Publication number: 20180119683Abstract: A piston is cylindrical and includes: a concave spherical portion formed at one of end portions of the piston and having a partially spherical shape; a cylindrical hollow portion formed at the other end portion of the piston; and an oil passage formed between the concave spherical portion and the hollow portion, the concave spherical portion and the hollow portion communicating with each other through the oil passage. The concave spherical portion includes a concave spherical surface formed by forging and having a partially spherical shape. A convex spherical portion of a shoe is supported by the concave spherical surface so as to be slidable and rotatable. An area of contact between the concave spherical surface and a predetermined master ball corresponding to the convex spherical portion is 40% or more of an entire area of the concave spherical surface.Type: ApplicationFiled: May 2, 2016Publication date: May 3, 2018Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHAInventors: Hideki TAMASHIMA, Koji MATSUHISA, Kazuhiro ISHIHARA, Katsuyuki KAWASHIMA
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Publication number: 20180033222Abstract: A state monitoring device for a plate spring mounted on a railcar bogie is configured to monitor a state of the plate spring, the plate spring including fiber-reinforced resin containing electrically conductive reinforced fibers containing reinforced fibers extending in a longitudinal direction of the plate spring. The state monitoring device includes: an electrode pair provided at both width direction side end surfaces of the plate spring and sandwiching the plate spring, a width direction of the plate spring being perpendicular to the longitudinal direction of the plate spring and a thickness direction of the plate spring; and a measuring unit electrically connected to the electrode pair and configured to measure an electrical characteristic of the plate spring.Type: ApplicationFiled: January 25, 2016Publication date: February 1, 2018Applicant: Kawasaki Jukogyo Kabushiki KaishaInventors: Masayuki MITSUE, Teruhisa NAKAOKA, Tomohei KOBAYASHI, Katsuyuki KAWASHIMA, Takehiro NISHIMURA, Yousuke TSUMURA
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Patent number: 4777007Abstract: A fast breeder incorporating a core having a driver core region containing an enriched fissile material, an external blanket region surrounding the core region and containing a fertile material and an internal blanket region disposed within the driver core region and containing a fertile material. The internal blanket region has a thickness or axial height greater at the central portion thereof than at the peripheral portion thereof. The peripheral end of the internal blanket region opposes to the inner peripheral surface of the external radial blanket region with a portion of the core region interposed therebetween.Type: GrantFiled: January 18, 1982Date of Patent: October 11, 1988Assignee: Hitachi, Ltd.Inventors: Kotaro Inoue, Katsuyuki Kawashima, Atsushi Zukeran
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Patent number: 4762672Abstract: In a fast breeder reactor provided with a core comprising a core region packed with a fissile material and a blanket region which surrounds the outside of said core region and most of which is formed of a fertile material, and a plurality of control rods which are put in and out of the above core region by a control rod driving device, the fast breeder reactor of the present invention is characterized in that each of said control rods is constructed of a neutron absorber region packed with a neutron absorber and a gas region disposed in the end portion on the side further separated from said control rod driving device than said neutron absorber region. With this invention, the spectral shift effect can be produced by utilizing said gas region, thereby increasing the core reactvity of the fast breeder reactor.Type: GrantFiled: October 15, 1985Date of Patent: August 9, 1988Assignee: Hitachi, Ltd.Inventors: Kunitoshi Kurihara, Katsuyuki Kawashima, Ryoji Masumi, Kazuo Azekura
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Patent number: 4655989Abstract: A fast breeder which is formed with a driver core region having an enriched nuclear fuel substance and allowing liquid metal acting as a coolant to pass therethrough and with a blanket region surrounding the periphery of the driver core region. A reactor stopping control rod to be inserted downward into the driver core region has an axially uniform density of boron-10. A reactor power adjusting control to be inserted downward into the driver core region has a lower density of boron-10 in a lower region than that in an upper region.Type: GrantFiled: May 26, 1982Date of Patent: April 7, 1987Assignee: Hitachi, Ltd.Inventors: Katsuyuki Kawashima, Kotaro Inoue
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Patent number: 4587078Abstract: An initial charge core of a fast breeder and a method of renewing fuel in the initial charge core. The initial charge core comprises a driver core region containing a fissile material, an external blanket region containing a fertile material and surrounding the driver core region, and an internal blanket region disposed within the driver core region and containing a fertile material. The axial thickness of the internal blanket region is greater at its central portion that at the peripheral portion thereof. The internal blanket region is enriched with the fissile material. The degree of enrichment in the internal blanket region is greater than that in the driver core region.Type: GrantFiled: July 26, 1982Date of Patent: May 6, 1986Assignee: Hitachi, Ltd.Inventors: Kazuo Azekura, Katsuyuki Kawashima, Kotaro Inoue, Sadao Uchikawa