Patents by Inventor Michio Nakayama
Michio Nakayama 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: 20090097126Abstract: A method and apparatus for laser marking is disclosed. An interference fringe is formed on a subject to be marked using a laser beam to make a marking.Type: ApplicationFiled: August 3, 2007Publication date: April 16, 2009Applicant: Kabushiki Kaisha ToshibaInventors: Atsushi Fujihara, Michio Nakayama
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Patent number: 7315421Abstract: A method and apparatus for laser marking is disclosed. An interference fringe is formed on a subject to be marked using a laser beam to make a marking.Type: GrantFiled: March 23, 2005Date of Patent: January 1, 2008Assignee: Kabushiki Kaisha ToshibaInventors: Atsushi Fujihara, Michio Nakayama
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Publication number: 20050233550Abstract: A method and apparatus for laser marking is disclosed. An interference fringe is formed on a subject to be marked using a laser beam to make a marking.Type: ApplicationFiled: March 23, 2005Publication date: October 20, 2005Inventors: Atsushi Fujihara, Michio Nakayama
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Publication number: 20050105668Abstract: A tie rod having a cruciform cross section is provided with steps for fixing sheaths at tips of cruciform arms of the tie rod; the tips of each of sheaths are fitted onto the steps of the tie rod, each of the sheaths having a U-shaped cross section; and each of the sheaths is fixed to the tie rod by performing a laser welding using a YAG laser beam or a CO2 laser beam with the sheath being fitted onto the tie rod to achieve a continuous weld of at least a part of the tie rod in a longitudinal direction thereof. An axial center position of the beam is shifted from an end face position of the step of the tie rod at least toward an axis center of the tie rod.Type: ApplicationFiled: March 12, 2004Publication date: May 19, 2005Inventors: Michio Nakayama, Takehiro Seto, Noriaki Goto, Shouji Adachi
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Patent number: 6882696Abstract: A tie rod having a cruciform cross section is provided with steps for fixing sheaths at tips of cruciform arms of the tie rod; the tips of each of sheaths are fitted onto the steps of the tie rod, each of the sheaths having a U-shaped cross section; and each of the sheaths is fixed to the tie rod by performing a laser welding using a YAG laser beam or a CO2 laser beam with the sheath being fitted onto the tie rod to achieve a continuous weld of at least a part of the tie rod in a longitudinal direction thereof. An axial center position of the beam is shifted from an end face position of the step of the tie rod at least toward an axis center of the tie rod.Type: GrantFiled: April 9, 2003Date of Patent: April 19, 2005Assignee: Hitachi, Ltd.Inventors: Michio Nakayama, Takehiro Seto, Noriaki Goto, Shouji Adachi
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Patent number: 6749425Abstract: An indirect heating furnace heats a substance in a reaction tube with a high-temperature combustion gas without contact between the substance and the combustion gas. The reaction tube is a stationary ceramic tube. A combustion device for supplying said heating high-temperature combustion gas into the furnace in comprised of at least one pair of regenerative burners.Type: GrantFiled: March 26, 2003Date of Patent: June 15, 2004Assignees: JP Steel Plantech Co., Yoshizawa Lime Industry Co., Ltd., Merichem CompanyInventor: Michio Nakayama
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Publication number: 20040091077Abstract: A tie rod having a cruciform cross section is provided with steps for fixing sheaths at tips of cruciform arms of the tie rod; the tips of each of sheaths are fitted onto the steps of the tie rod, each of the sheaths having a U-shaped cross section; and each of the sheaths is fixed to the tie rod by performing a laser welding using a YAG laser beam or a CO2 laser beam with the sheath being fitted onto the tie rod to achieve a continuous weld of at least a part of the tie rod in a longitudinal direction thereof. An axial center position of the beam is shifted from an end face position of the step of the tie rod at least toward an axis center of the tie rod.Type: ApplicationFiled: April 9, 2003Publication date: May 13, 2004Inventors: Michio Nakayama, Takehiro Seto, Noriaki Goto, Shouji Adachi
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Patent number: 6735266Abstract: A tie rod having a cruciform cross section is provided with steps for fixing sheaths at tips of cruciform arms of the tie rod; the tips of each of sheaths are fitted onto the steps of the tie rod, each of the sheaths having a U-shaped cross section; and each of the sheaths is fixed to the tie rod by performing a laser welding using a YAG (yttrium aluminum garnet) laser beam or a CO2 laser beam with the sheath being fitted onto the tie rod to achieve a continuous weld of at least a part of the tie rod in a longitudinal direction thereof. An axial center position of the beam is shifted from an end face position of the step of the tie rod at least toward an axis center of the tie rod.Type: GrantFiled: October 21, 2002Date of Patent: May 11, 2004Assignee: Hitachi, Ltd.Inventors: Michio Nakayama, Takehiro Seto, Noriaki Goto, Shouji Adachi
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Publication number: 20040076254Abstract: A tie rod having a cruciform cross section is provided with steps for fixing sheaths at tips of cruciform arms of the tie rod; the tips of each of sheaths are fitted onto the steps of the tie rod, each of the sheaths having a U-shaped cross section; and each of the sheaths is fixed to the tie rod by performing a laser welding using a YAG laser beam or a CO2 laser beam with the sheath being fitted onto the tie rod to achieve a continuous weld of at least a part of the tie rod in a longitudinal direction thereof. An axial center position of the beam is shifted from an end face position of the step of the tie rod at least toward an axis center of the tie rod.Type: ApplicationFiled: October 21, 2002Publication date: April 22, 2004Inventors: Michio Nakayama, Takehiro Seto, Noriaki Goto, Shouji Adachi
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Patent number: 6704386Abstract: A fuel channel box manufacturing method processes a fuel channel box of a zirconium-base alloy by a beta-quench treatment that heats the fuel channel box by a heating coil. The distance between the heating coil and the opposite walls of the fuel channel box is controlled so that temperature differences between the opposite walls of the fuel channel box are reduced. The fuel channel box of a zirconium-base alloy is heated at a temperature in a temperature range including &bgr;-phase temperatures so that temperature difference between the opposite walls is 50° C. or below. The fuel channel box manufacturing method is capable of manufacturing a fuel channel box that is not subject to significant irradiated bow even if a deflection is produced therein originally when the same is manufactured and of manufacturing the fuel channel box at a high production efficiency.Type: GrantFiled: November 1, 2002Date of Patent: March 9, 2004Assignee: Hitachi, Ltd.Inventors: Michio Nakayama, Takehiro Seto, Tatsuo Seki, Isao Kurihara
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Patent number: 6574295Abstract: In order to provide a boiling water type nuclear reactor use control rod with a guide use roller which improves corrosive environment at a clearance in the guide use roller and suppresses a generation of stress corrosion cracking while maintaining sliding function of the control rod by the guide use roller, at least one of a handle 5, a lower portion supporting plate 2a and a dropping speed limiter 2 is provided with the guide use roller, and a space which causes water flow in a clearance between a pin 9 and a pin hole 12 in the guide use roller is provided adjacent the clearance.Type: GrantFiled: September 17, 2001Date of Patent: June 3, 2003Assignees: Hitachi, Ltd., Hitachi Engineering Co., Ltd.Inventors: Michio Nakayama, Norio Kawashima, Shinobu Okido
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Publication number: 20030053582Abstract: A fuel channel box manufacturing method processes a fuel channel box of a zirconium-base alloy by a beta-quench treatment that heats the fuel channel box by a heating coil. The distance between the heating coil and the opposite walls of the fuel channel box is controlled so that temperature differences between the opposite walls of the fuel channel box are reduced. The fuel channel box of a zirconium-base alloy is heated at a temperature in a temperature range including &bgr;-phase temperatures so that temperature difference between the opposite walls is 50° C. or below. The fuel channel box manufacturing method is capable of manufacturing a fuel channel box that is not subject to significant irradiated bow even if a deflection is produced therein originally when the same is manufactured and of manufacturing the fuel channel box at a high production efficiency.Type: ApplicationFiled: November 1, 2002Publication date: March 20, 2003Applicant: HITACHI, LTD.Inventors: Michio Nakayama, Takehiro Seto, Tatsuo Seki, Isao Kurihara
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Publication number: 20020118788Abstract: In order to provide a boiling water type nuclear reactor use control rod with a guide use roller which improves corrosive environment at a clearance in the guide use roller and suppresses a generation of stress corrosion cracking while maintaining sliding function of the control rod by the guide use roller, at least one of a handle 5, a lower portion supporting plate 2a and a dropping speed limiter 2 is provided with the guide use roller, and a space which causes water flow in a clearance between a pin 9 and a pin hole 12 in the guide use roller is provided adjacent the clearance.Type: ApplicationFiled: September 17, 2001Publication date: August 29, 2002Applicant: Hitachi, Ltd.Inventors: Michio Nakayama, Norio Kawashima, Shinobu Okido
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Patent number: 6385227Abstract: A solid-state laser apparatus of the laser diode excitation type includes a condenser mirror to input incident light to a solid laser rod. The condenser mirror has an elliptical shape. In this apparatus, one focus of the mirror is located in a laser beam incident side and the other focus is located in a central axis of a laser rod. In addition, beam axes of beams from laser diodes are fixed to a long axis of the oval condenser mirror.Type: GrantFiled: January 11, 2000Date of Patent: May 7, 2002Assignee: Kabushiki Kaisha ToshibaInventors: Michio Nakayama, Teruichiro Fukasawa
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Publication number: 20010050968Abstract: A fuel channel box manufacturing method processes a fuel channel box of a zirconium-base alloy by a beta-quench treatment that heats the fuel channel box by a heating coil. The distance between the heating coil and the opposite walls of the fuel channel box is controlled so that temperature differences between the opposite walls of the fuel channel box are reduced. The fuel channel box of a zirconium-base alloy is heated at a temperature in a temperature range including P-phase temperatures so that temperature difference between the opposite walls is 50° C. or below. The fuel channel box manufacturing method is capable of manufacturing a fuel channel box that is not subject to significant irradiated bow even if a deflection is produced therein originally when the same is manufactured and of manufacturing the fuel channel box at a high production efficiency.Type: ApplicationFiled: January 17, 2001Publication date: December 13, 2001Applicant: HITACHI, LTD.Inventors: Michio Nakayama, Takehiro Seto, Tatsuo Seki, Isao Kurihara
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Patent number: 5000679Abstract: A burner for directly flaming steel making materials to accomplish reduction without oxidation, wherein the burner comprises a plurality of combusion air outlets spaced circumferentially of the inner wall of a tubular burner tile, and fuel gas outlets disposed centrally of the burner tile, and wherein the combustion air outlets and fuel gas outlets are formed and disposed with specified jetting angles and distances to produce burning without oxidation.Type: GrantFiled: February 27, 1989Date of Patent: March 19, 1991Assignee: Nippon Kokan Kabushiki KaishaInventors: Shuzo Fukuda, Masahiro Abe, Shiro Fukunaka, Michio Nakayama, Koichiro Arima, Shunichi Sugiyama, Koji Matsui
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Patent number: 4993939Abstract: A burner for directly flaming steel making materials to accomplish reduction without oxidation, wherein the burner comprises a plurality of combustion air outlets spaced circumferentially of the inner wall of a tubular burner tile, and fuel gas outlets disposed centrally of the burner tile, and wherein the combustion air outlets and fuel gas outlets are formed and disposed with specified jetting angles and distances to produce buring without oxidation.Type: GrantFiled: February 27, 1989Date of Patent: February 19, 1991Assignee: Nippon Kokan Kabushiki KaishaInventors: Shuzo Fukuda, Masahiro Abe, Shiro Fukunaka, Michio Nakayama, Koichiro Arima, Shunichi Sugiyama, Koji Matsui
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Patent number: 4971552Abstract: A burner for directly flaming steel making materials to accomplish reduction without oxidation, wherein the burner comprises a plurality of combustion air outlets spaced circumferentially of the inner wall of a tubular burner tile, and fuel gas outlets disposed centrally of the burner tile, and wherein the combustion air outlets and fuel gas outlets are formed and disposed with specified jetting angles and distances to produce burning without oxidation.Type: GrantFiled: February 27, 1989Date of Patent: November 20, 1990Assignee: Nippon Kokan Kabushiki KaishaInventors: Shuzo Fukuda, Masahiro Abe, Shiro Fukunaka, Michio Nakayama, Koichiro Arima, Shunichi Sugiyama, Koji Matsui
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Patent number: 4971551Abstract: A burner for directly flaming steel making materials to accomplish reduction without oxidation, wherein the burner comprises a plurality of combustion air outlets spaced circumferentially of the inner wall of a tubular burner tile, and fuel gas outlets disposed centrally of the burner tile, and wherein the combustion air outlets and fuel gas outlets are formed and disposed with specified jetting angles and distances to produce burning without oxidation.Type: GrantFiled: February 27, 1989Date of Patent: November 20, 1990Assignee: Nippon Kokan Kabushiki KaishaInventors: Shuzo Fukuda, Masahiro Abe, Shiro Fukunaka, Michio Nakayama, Koichiro Arima, Shunichi Sugiyama, Koji Matsui
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Patent number: 4971553Abstract: A burner for directly flaming steel making materials to accomplish reduction without oxidation, wherein the burner comprises a plurality of combustion air outlets spaced circumferentially of the inner wall of a tubular burner tile, and fuel gas outlets disposed centrally of the burner tile, and wherein the combustion air outlets and fuel gas outlets are formed and disposed with specified jetting angles and distances to produce burning without oxidation.Type: GrantFiled: February 27, 1989Date of Patent: November 20, 1990Assignee: Nippon Kokan Kabushiki KaishaInventors: Shuzo Fukuda, Masahiro Abe, Shiro Fukunaka, Michio Nakayama, Koichiro Arima, Shunichi Sugiyama, Koji Matsui