Patents by Inventor Kazuto Okada
Kazuto Okada 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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Publication number: 20100007038Abstract: A tire vulcanizing apparatus and a tire vulcanizing method, by which the pressure and temperature of a heating and pressurizing medium to be supplied to the internal space of a raw tire can be controlled without the condition of pressure being affected by the condition of temperature.Type: ApplicationFiled: December 4, 2007Publication date: January 14, 2010Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL LTD.)Inventors: Hisashi Mitamura, Kazuto Okada, Hideaki Kuwabara, Tomomichi Murata, Masataka Toshima, Yasuhiko Fujieda
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Publication number: 20090308861Abstract: The present invention provides a heating unit capable of easily and inexpensively adjusting total impedance based on tire mold size so that a power source can be used at a high power factor, and a tire heating apparatus using the same. A ferromagnetic metallic member 10a heats a tire mold M1 by heat conduction. An induction heating coil C1 is disposed on the side of the ferromagnetic metallic member 10a opposite the tire mold M1 to induction-heat the ferromagnetic metallic member 10a by generating magnetic field lines. A nonmagnetic conductor 30a is disposed on the side of the induction heating coil C1 opposite the ferromagnetic metallic member 10a to shield the magnetic field lines generated by the induction heating coil C1. A heating unit 100a including these elements heats the tire mold M1 storing a tire.Type: ApplicationFiled: September 21, 2007Publication date: December 17, 2009Inventors: Kazuto Okada, Hideaki Kuwabara, Hisashi Mitamura, Tomomichi Murata, Masatake Toshima, Yasuhiko Fujieda
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Publication number: 20090237866Abstract: A capacitor element having an upper surface, a lower surface, a first end surface and a second end surface is coated with a cathode layer, except for the first end surface. Anode lead extends out from the first end surface. An anode terminal has a first portion located close to and beneath the lower surface of the capacitor element and has a second portion connected to the anode lead via an arcuate connector. A cathode terminal is disposed under the lower surface of the capacitor element, being spaced from the first portion of the anode terminal. A packaging resin covers the capacitor element, the anode terminal and the cathode terminal. A depression is formed in the anode terminal, which extends from a portion of the anode terminal facing the lower surface of the capacitor element to the inner edge of the anode terminal facing the cathode terminal.Type: ApplicationFiled: March 3, 2009Publication date: September 24, 2009Applicant: Matsuo Electric Company,LimitedInventors: Kazuto Okada, Hiroaki Kotera, Yasunori Kinugawa, Kiyoharu Tsunetoshi, Masatoshi Niki
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Patent number: 7435069Abstract: The object of the present invention is to provide a vulcanization molding and its vulcanizing machine in which a heating pressure medium, which is nitrogen gas, is heated at high heat exchange ratio without an increase in the running cost and an increase in size. The vulcanizing machine includes a mold mechanism such as a lower side mold 5 and an upper side mold 25 and the like, which removably accommodate a green tire 4, an agitating mechanism 30, which agitates a heating pressure medium such as nitrogen gas or the like, which vulcanization mold the green tire 4 by heating the green tire 4 while pressing it against the mold mechanism, and an induction heating mechanism 41, which preferentially heats the agitating mechanism 30.Type: GrantFiled: June 7, 2004Date of Patent: October 14, 2008Assignee: Kabushiki Kaisha Kobe Seiko ShoInventors: Kazuto Okada, Hisashi Mitamura, Kenichi Inoue, Hideaki Kuwabara
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Patent number: 7416694Abstract: The disclosed information describes a preheating method and apparatus for preheating raw tire including metal members embedded therein prior to vulcanization molding process, to heat whole part of the raw tire up to desirable temperature rapidly and certainly to complete vulcanization molding in a short time. The disclosed apparatus comprises a retaining means for retaining raw tire in a predetermined attitude in a releasable manner; a induction heating means for heating the metal members inductively by means of a high frequency magnetic field, the high frequency magnetic field being applied to raw tire retained by the retaining means; and a radiation heater for heating a rate-limiting portion radiatively, the temperature of the rate-limiting portion rising slowly under only induction heating for the metal members.Type: GrantFiled: October 6, 2003Date of Patent: August 26, 2008Assignee: Kabushiki Kaisha Kobe Seiko ShoInventors: Kazuto Okada, Hisashi Mitamura
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Patent number: 7311872Abstract: A post cure inflator for expansion-cooling a vulcanized tire is provided with a vulcanized-tire holding mechanism for holding the vulcanized tire and a rotating mechanism for rotating the vulcanized tire at a high speed via the vulcanized-tire holding mechanism such that a forced convection becomes more dominant than a natural convection in an air flow around the vulcanized tire.Type: GrantFiled: October 26, 2005Date of Patent: December 25, 2007Assignees: Kobe Steel, Ltd., Sumitomo Rubber Industries, Ltd.Inventors: Hisashi Mitamura, Kazuto Okada, Akio Hakamada, Yutaka Yoshida
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Patent number: 7084380Abstract: A raw tire-preheating method and apparatus for preheating a raw tire uniformly over all the areas with a reduced running cost. The raw tire-preheating apparatus comprises a tread section-preheating mechanism (16) including a front coil (21) disposed so as to face a tread section (4a) for generating a high frequency magnetic field and for applying it to the tread section (4a); and a core mechanism consisting of center cores (24), separation cores (25) and side cores (26) for providing an intensity distribution of the high frequency magnetic field that the tread section (4a) is uniformly preheated overall in the tire width direction. A movement mechanism for moving at least one of the tread section-preheating mechanism (16) and the raw tire (4) is provided in order to move the tread section-preheating mechanism (16) relative to the tread section (4a).Type: GrantFiled: July 2, 2002Date of Patent: August 1, 2006Assignee: Kabushiki Kaisha Kobe Seiko ShoInventors: Kazuto Okada, Hisashi Mitamura, Kenichi Inoue, Shigeto Adachi
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Patent number: 7078660Abstract: An apparatus for effectively heating a green tire generates heat to a metal member embedded therein using electromagnetic induction, to complete a heating formation of a green tire in a sufficiently short time. Particularly, in the thick portion of the green tire which is hard to heat, the efficiency of heat generation due to electromagnetic induction is increased by effectively concentrating a high frequency magnetic field on the metal member embedded therein. The apparatus for heating a green tire includes a local heating coil for forming a high frequency magnetic field along a portion of extending direction of a metal member, a high frequency power supply for supplying high frequency power to the local heating coil, and a mechanism for moving the local heating coil relatively in the extending direction of the metal member.Type: GrantFiled: August 26, 2004Date of Patent: July 18, 2006Assignee: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Hisashi Mitamura, Shigeto Adachi, Kazuto Okada, Hirohiko Fukumoto, Kenichi Inoue
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Publication number: 20060099285Abstract: A post cure inflator for expansion-cooling a vulcanized tire is provided with a vulcanized-tire holding mechanism for holding the vulcanized tire and a rotating mechanism for rotating the vulcanized tire at a high speed via the vulcanized-tire holding mechanism such that a forced convection becomes more dominant than a natural convection in an air flow around the vulcanized tire.Type: ApplicationFiled: October 26, 2005Publication date: May 11, 2006Applicants: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.), SUMITOMO RUBBER INDUSTRIES, LTD.Inventors: Hisashi Mitamura, Kazuto Okada, Akio Hakamada, Yutaka Yoshida
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Publication number: 20050016995Abstract: An apparatus for effectively heating a green tire generates heat to a metal member embedded therein using electromagnetic induction, to complete a heating formation of a green tire in a sufficiently short time. Particularly, in the thick portion of the green tire which is hard to rise temperature heat, the efficiency of heat generation due to electromagnetic induction is increased by effectively concentrating a high frequency magnetic field on the metal member embedded therein. The apparatus for heating a green tire comprises a local heating coil for forming a high frequency magnetic field along a portion of extending direction of a metal member, a high frequency power supply for supplying high frequency power to the local heating coil, and a mechanism for moving the local heating coil relatively in the extending direction of the metal member.Type: ApplicationFiled: August 26, 2004Publication date: January 27, 2005Applicant: KABUSHI KAISHA KOBE SEIKO SHO (Kobe Steel, Ltd.)Inventors: Hisashi Mitamura, Shigeto Adachi, Kazuto Okada, Hirohiko Fukumoto, Kenichi Inoue
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Publication number: 20040247717Abstract: The object of the present invention is to provide a vulcanization molding and its vulcanizing machine in which a heating pressure medium, which is nitrogen gas, is heated at high heat exchange ratio without an increase in the running cost and an increase in size. The vulcanizing machine includes a mold mechanism such as a lower side mold 5 and an upper side mold 25 and the like, which removably accommodate a green tire 4, an agitating mechanism 30, which agitates a heating pressure medium such as nitrogen gas or the like, which vulcanization mold the green tire 4 by heating the green tire 4 while pressing it against the mold mechanism, and an induction heating mechanism 41, which preferentially heats the agitating mechanism 30.Type: ApplicationFiled: June 7, 2004Publication date: December 9, 2004Applicant: Kabushiki Kaisha Kobe Seiko Sho.Inventors: Kazuto Okada, Hisashi Mitamura, Kenichi Inoue, Hideaki Kuwabara
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Patent number: 6824724Abstract: An object of the present invention is to provide a bladder which is unlikely to have a shapal variation along the inner wall surface of the tire and can satisfactorily extend along the inner wall surface of the tire. An inventive bladder is used to press the inner wall surface of the tire by a pressurized heating medium during the vulcanization of a green tire and is comprised of a fabric layer (purl stitched fabric layer 12) and rubber layers (silicone rubber layers 11, 13) placed one over another. Elongation rates of the fabric layer in warp direction and in weft direction both exceed 15% and satisfy: 0.4≦elongation rate in weft direction/elongation rate in warp direction ≦6.0. Since the fabric layer has good extensibility, it can elongate with the rubber layers.Type: GrantFiled: November 1, 2002Date of Patent: November 30, 2004Assignees: Teijin Limited, Kabushiki Kaisha Kobe Seiko ShoInventors: Hiroyuki Mori, Yozaburo Takayama, Kazuhisa Fujisawa, Hisashi Mitamura, Kazuto Okada, Naoya Fujiwara, Eiichiro Yoshikawa, Takayuki Kogishi
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Patent number: 6818872Abstract: An apparatus for effectively heating a green tire generates heat to a metal member embedded therein using electromagnetic induction, to complete a heating formation of a green tire in a sufficiently short time. Particularly, in the thick portion of the green tire which is hard to heat, the efficiency of heat generation due to electromagnetic induction is increased by effectively concentrating a high frequency magnetic field on the metal member embedded therein. The apparatus for heating a green tire comprises a local heating coil for forming high frequency magnetic field along a portion of extending direction of a metal member, a high frequency power supply for supplying high frequency power to the local heating coil, and a mechanism for moving the local heating coil relatively in the extending direction of the metal member.Type: GrantFiled: July 12, 2001Date of Patent: November 16, 2004Assignee: Kobe Steel, Ltd.Inventors: Hisashi Mitamura, Shigeto Adachi, Kazuto Okada, Hirohiko Fukumoto, Kenichi Inoue
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Publication number: 20040069391Abstract: The disclosed information describes a preheating method and apparatus for preheating raw tire including metal members embedded therein prior to vulcanization molding process, to heat whole part of the raw tire up to desirable temperature rapidly and certainly to complete vulcanization molding in a short time. The disclosed apparatus comprises a retaining means for retaining raw tire in a predetermined attitude in a releasable manner; a induction heating means for heating the metal members inductively by means of a high frequency magnetic field, the high frequency magnetic field being applied to raw tire retained by the retaining means; and a radiation heater for heating a rate-limiting portion radiatively, the temperature of the rate-limiting portion rising slowly under only induction heating for the metal members.Type: ApplicationFiled: October 6, 2003Publication date: April 15, 2004Applicant: Kabushiki Kaisha Kobe Seiko Sho.Inventors: Kazuto Okada, Hisashi Mitamura
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Patent number: 6655940Abstract: A tire press comprising a center post 22 vertically movably extended through a center part of a lower ring mechanism 12 and vertically moving an upper ring 19 with respect to a lower ring mechanism 12, a heater 103 arranged in an outer peripheral position of the center post 22 on the tire inner peripheral side of a green tire 4 held by the lower ring mechanism 12 and the upper ring 19, heater 103 to apply a heat to the green tire 4, a first driving mechanism such as a tubular member vertically moving cylinder 98 capable of vertically moving the heater 103 to a suitable height position so as to move the heater 103 to a suitable position independently of vertical movement of the center post 22, and a second driving mechanism such as a driving motor 99 capable of rotating the heater 103. By the provision of such a mechanism as described, press molding relative to a green tire 4 can be completed in a sufficiently short period of time.Type: GrantFiled: July 13, 2001Date of Patent: December 2, 2003Assignee: Kobe Steel, Ltd.Inventors: Hisashi Mitamura, Yasuhiko Fujieda, Kazuto Okada, Hirohiko Fukumoto, Akira Sakurai
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Publication number: 20030183622Abstract: A raw tire-preheating method and apparatus for preheating a raw tire uniformly over all the areas with a reduced running cost. The raw tire-preheating apparatus comprises a tread section-preheating mechanism (16) including a front coil (21) disposed so as to face a tread section (4a) for generating a high frequency magnetic field and for applying it to the tread section (4a); and a core mechanism consisting of center cores (24), separation cores (25) and side cores (26) for providing an intensity distribution of the high frequency magnetic field that the tread section (4a) is uniformly preheated overall in the tire width direction. A movement mechanism for moving at least one of the tread section-preheating mechanism (16) and the raw tire (4) is provided in order to move the tread section-preheating mechanism (16) relative to the tread section (4a).Type: ApplicationFiled: March 31, 2003Publication date: October 2, 2003Inventors: Kazuto Okada, Hisashi Mitamura, Kenichi Inoue, Shigeto Adachi
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Publication number: 20030122284Abstract: An object of the present invention is to provide a bladder which is unlikely to have a shapal variation along the inner wall surface of the tire and can satisfactorily extend along the inner wall surface of the tire. An inventive bladder is used to press the inner wall surface of the tire by a pressurized heating medium during the vulcanization of a green tire and is comprised of a fabric layer (purl stitched fabric layer 12) and rubber layers (silicone rubber layers 11, 13) placed one over another. Elongation rates of the fabric layer in warp direction and in weft direction both exceed 15% and satisfy: 0.4≦elongation rate in weft direction/elongation rate in warp direction≦6.0. Since the fabric layer has good extensibility, it can elongate with the rubber layers.Type: ApplicationFiled: November 1, 2002Publication date: July 3, 2003Applicant: TEIJIN LIMITEDInventors: Hiroyuki Mori, Yozaburo Takayama, Kazuhisa Fujisawa, Hisashi Mitamura, Kazuto Okada, Naoya Fujiwara, Eiichiro Yoshikawa, Takayuki Kogishi
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Patent number: 6551085Abstract: A bladder for a vulcanizer includes, as a constituent member, a low elongation material with stable properties at vulcanization temperatures. During a vulcanization-molding process, the bladder is pressed against the inner surface of a green tire using a pressurized medium. The pressurized medium can be at vulcanization temperatures. The bladder has substantially the same shape as the inner wall surface of the tire that is formed using the bladder. As a result, irregularities in the shape of the inner wall surface of a tire rarely occur, and the frequency of exchange of bladders can be reduced. The vulcanizer bladder can include a conductive material or a magnetic material, both of which can be heated by using an induction heating coil. The use of both heat from the pressurized medium and heat generated in the bladder to vulcanize a green tire can shorten the period of time required for vulcanizing-molding.Type: GrantFiled: May 12, 2000Date of Patent: April 22, 2003Assignee: Kobe Steel, Ltd.Inventors: Hisashi Mitamura, Yasuhiko Fujieda, Kazuhisa Fujisawa, Kazuto Okada, Akira Sakurai, Hirohiko Fukumoto
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Patent number: 6474968Abstract: A vulcanizer includes a vulcanizer body for heating a green tire by making use of heat quantity to vulcanize an mold it and repetitiously using the heating medium used for the vulcanizing and molding for heating. A heat quantity supplementing device heats the heating medium to thereby supplement a lost part of the heat quantity of the heating medium. Thereby, vulcanizing and molding can be carried out with less energy loss of the heating medium.Type: GrantFiled: September 15, 2000Date of Patent: November 5, 2002Assignee: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Hisashi Mitamura, Yasuhiko Fujieda, Hirohiko Fukumoto, Kazuto Okada
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Patent number: 6467142Abstract: A terminal frame including plural pairs of terminal sections arranged in rows and columns is prepared. Each pair includes a flat anode terminal section and a flat cathode terminal section disposed in the same plane with their tip ends being spaced from and facing each other. Plural capacitor elements are prepared. Each capacitor element has a cathode layer on substantially entire outer surface thereof, and a tantalum lead. The capacitor elements are placed on the frame. The tantalum lead of each capacitor element is coupled to one major surface of the anode terminal section of one pair of terminal sections, with the cathode layer of that capacitor element coupled to one major surface of the cathode terminal section of the same pair.Type: GrantFiled: June 15, 2000Date of Patent: October 22, 2002Assignee: Matsuo Electric Company LimitedInventors: Michihiro Shirashige, Hidemasa Ichiki, Koichi Baba, Kazuto Okada, Takayoshi Oka