Patents by Inventor Akihiro Goto

Akihiro Goto 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).

  • Publication number: 20120114956
    Abstract: What disclosed is formation of a protective coating having oxidation resistance and abrasiveness at a portion to be processed of a component main body by employing an electrode composed of a molded body molded form a mixed powder in which a powder of an oxidation-resistant metal and a powder of a ceramic is mixed or the molded body processed with a heat treatment, generating a pulsing electric discharge between the electrode and the portion to be processed of the component main body so that an electrode material of the electrode and such carry out deposition, diffusion and/or welding on the portion to be processed of the component main body by energy of the electric discharge.
    Type: Application
    Filed: January 13, 2012
    Publication date: May 10, 2012
    Applicant: IHI CORPORATION
    Inventors: Hiroyuki Ochiai, Mitsutoshi Watanabe, Akihiro Goto, Masao Akiyoshi
  • Patent number: 8168914
    Abstract: In an electric discharge machining, in order to reduce damage of an object to be machined and an electrode and to achieve machining velocity enhancement and reduction of electrode wear amount by appropriately controlling a short-circuit current that flows when the electrode and the object to be machined are short-circuited, an electric-discharge-machining power supply apparatus for machining an object to be machined by interrupting every predetermined time period pulse trains that are turned on and off at predetermined timing, to supply electric power to a machining gap between a machining electrode (2) and the object (3) to be machined includes: a short circuit detecting means (11) for detecting a short circuit at the machining gap between the machining electrode (2) and the object (3) to be machined; and a pulse halting means (12) for, when the short circuit detecting means (11) detects a short circuit occurrence at the machining gap, halting generation of particular pulses in the pulse train so as to halt
    Type: Grant
    Filed: October 27, 2005
    Date of Patent: May 1, 2012
    Assignee: Mitsubishi Electric Corporation
    Inventors: Satoshi Suzuki, Kiyohito Oda, Kazushi Nakamura, Akihiro Goto
  • Publication number: 20120097367
    Abstract: The present invention provides indoor unit of air conditioner including a plurality of heat-exchangers, main-unit casing that accommodates heat-exchangers and includes suction air duct extending from air inlet to heat-exchangers and blowout air duct extending from heat-exchangers to air outlet, and air blower that is provided in blowout air duct and blows out air taken in from air inlet, from air outlet after having air passed through heat-exchangers.
    Type: Application
    Filed: July 10, 2009
    Publication date: April 26, 2012
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Akihiro Goto, Takashi Kobayashi, Daisuke Sugiyama, Seiji Hirakawa, Koichi Umetsu
  • Publication number: 20120057983
    Abstract: A method for forming a surface layer, the method including: arranging a member in a machining fluid; and forming a surface layer including silicon by supplying silicon component from the silicon electrode to the member side by applying a predetermined voltage and generating electric discharge, wherein a value of an electric discharge detection level is set to be equal to or larger than a value obtained by adding a voltage depression at the silicon electrode to an arc potential during electric discharge, and wherein the surface layer is formed on a surface of the member by repetitively performing, after the voltage is applied, detecting the electric discharge generated between the silicon electrode and the member by detecting a drop of the voltage to be lower than the electric discharge detection level, stopping applying the voltage for a predetermined time, and applying the voltage again after a predetermined break time.
    Type: Application
    Filed: May 20, 2009
    Publication date: March 8, 2012
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Akihiro Goto, Hiroyuki Teramoto, Nobuyuki Sumi, Yoshikazu Nakano
  • Publication number: 20120056133
    Abstract: An electrode for electrical-discharge surface treatment is made of a compact obtained by forming metal powder, metal compound powder, or conductive ceramics powder. Pulsed discharges between the electrode and a work in a working fluid or in air cause a film to form at the surface of the work, the film being made of a material of the electrode or made of a substance with which the material of the electrode reacts. A resistance of a surface of the electrode measured using a four-terminal method ranges from 5×10?3 ? to 10×10?3 ?, and an oxygen concentration in the electrode ranges from 4 weight % to 10 weight %.
    Type: Application
    Filed: October 26, 2011
    Publication date: March 8, 2012
    Applicants: IHI CORPORATION, MITSUBISHI ELECTRIC CORPORATION
    Inventors: Hiroyuki TERAMOTO, Yukio SATO, Akihiro SUZUKI, Akihiro GOTO, Kazushi NAKAMURA
  • Publication number: 20120009357
    Abstract: In a rotation member rotatably engaged with a housing, a pulsing electric discharge is generated in a processing liquid or in a gas, between an electrode and the rotation member. The electrode is a chemical compound of a metallic powder or metal, or a molded body formed by molding ceramic powder, or a molded body obtained by heating the molded body. Energy from the electric discharges causes coating to be formed on an engagement portion engaging the housing, the coating formed from the material of the electrode or a substance to which the electrode material combined by the energy of the electric discharges.
    Type: Application
    Filed: September 20, 2011
    Publication date: January 12, 2012
    Applicants: MITSUBISHI DENKI KABUSHIKI KAISHA, Ishikawajima-Harima Heavy Industries Co., Ltd.
    Inventors: Hiroyuki Ochiai, Mitsutoshi Watanabe, Takashi Furukawa, Akihiro Goto, Masao Akiyoshi
  • Publication number: 20110174783
    Abstract: A microhole electric discharge machining apparatus that forms a conical inverse-tapered hole on a workpiece by a thin wire electrode, includes, an electrode holder that holds an upper part of the thin wire electrode and feeds a lower part of the thin wire electrode downward to stretch the lower part to the workpiece by rotating the thin wire electrode; a first guide member that is arranged near the workpiece upper surface and is provided with a first guide hole through which the thin wire electrode is penetrated on a hole-machining axis; a second guide member that is arranged between the first guide member and the electrode holder and is provided with a second guide hole through which the thin wire electrode is penetrated at a position eccentric from the hole-machining axis; and a swivel driving unit that circularly swivels the second guide member around the hole-machining axis.
    Type: Application
    Filed: July 29, 2008
    Publication date: July 21, 2011
    Applicant: Mitsubishi Electric Corporation
    Inventors: Satoshi Suzuki, Akihiro Goto, Kazushi Nakamura
  • Publication number: 20110135845
    Abstract: An electrical discharge surface treatment method for forming a coating film by generating a pulsed electrical discharge between an electrode and a workpiece in working fluid or gas using a green compact obtained by molding metal powder or metal alloy powder or a molded body obtained by heating the green compact as the electrode, and by melting an electrode material by an energy of the pulsed electrical discharge, forming a coating of the electrode material or a coating of a material obtained by a reaction of the electrode material by the energy of the pulsed electrical discharge on a surface of the workpiece, the electrical discharge surface treatment method includes generating the pulsed electrical discharge by mixing together two or more types of pulsed electrical discharges having different energies.
    Type: Application
    Filed: August 6, 2008
    Publication date: June 9, 2011
    Inventors: Akihiro Goto, Kazushi Nakamura, Masahiro Okane, Hiroyuki Teramoto
  • Patent number: 7918460
    Abstract: A pulsed discharge is generated between tip ends of a rotating member such as a blade and a discharge electrode including a hard material such as cBN in dielectric liquid or gas by a power supply for discharge to melt the discharge electrode, and a part of the discharge electrode is attached to the tip end of the rotating member to form an abrasive coating film including the hard materials such as cBN.
    Type: Grant
    Filed: April 17, 2009
    Date of Patent: April 5, 2011
    Assignee: IHI Corporation
    Inventors: Hiroyuki Ochiai, Mitsutoshi Watanabe, Akihiro Goto, Masao Akiyoshi
  • Patent number: 7915559
    Abstract: An electrode for electric discharge surface treatment, in which a pulse-like electric discharge is caused between the electrode and a work in a dielectric fluid or an atmosphere, and in which a coat of an electrode material or a substance that is generated by a reaction of the electrode material due to an electric discharge energy is formed on a surface of the work, is a molded powder that is formed by molding a material powder including a metallic powder, a metallic compound powder, and a conductive ceramic powder. A powder solid that is formed as a result of coagulation of the material powder, and that is included in the molded powder has a diameter shorter than a distance between the electrode and the work.
    Type: Grant
    Filed: December 2, 2005
    Date of Patent: March 29, 2011
    Assignees: Mitsubishi Denki Kabushiki Kaisha, Ishikawajima-Harma Heavy Industries Co., Ltd.
    Inventors: Akihiro Goto, Masao Akiyoshi, Katsuhiro Matsuo, Hiroyuki Ochiai, Mitsutoshi Watanabe, Takashi Furukawa
  • Patent number: 7910176
    Abstract: An electrode is used to perform discharge surface treatment of a work piece. The electrode is made of a green compact obtained by compression-molding an electrode material including powder of any of a metal, a metallic compound, and ceramics. The discharge surface treatment includes generating an electric discharge between the electrode and the work piece in an atmosphere of a machining medium and forming a film consisting of a machining material on a surface of a work piece using energy produced by the electric discharge. The powder has an average particle diameter of 5 micrometer to 10 micrometers, and contains 40 volume percent or more of a component not forming or less easily forming carbide as a component for forming the film on the work piece. The electrode has a hardness in a range of B to 8B tested with a pencil scratch test for a coating film.
    Type: Grant
    Filed: January 29, 2004
    Date of Patent: March 22, 2011
    Assignees: Mitsubishi Denki Kabushiki Kaisha, Ishikawajima-Harima Heavy Industries Co., Ltd.
    Inventors: Akihiro Goto, Masao Akiyoshi, Katsuhiro Matsuo, Hiroyuki Ochiai, Mitsutoshi Watanabe, Takashi Furukawa
  • Patent number: 7903289
    Abstract: A management label has a color loss determination area that enables easy determination of color loss. An identification color printing area 11 where an inventory control color for managing products and a color loss determination area 15 for determining color loss are printed on the label side 10a of an inventory management label 10. The color loss determination area 15 contains a color loss determination section 18 including the letters “NG” printed with a black coloring agent, and a background portion 19 that is printed using cyan, magenta, and yellow coloring agents. When there is no color loss and the letters “NG” and background portion 19 are printed normally, the letters “NG” and background portion 19 are both gray and the “NG” letters cannot be read. If one of the colors is lost, the printed colors change, the letters “NG” become discernable, and color loss can be easily determined.
    Type: Grant
    Filed: April 28, 2010
    Date of Patent: March 8, 2011
    Assignee: Seiko Epson Corporation
    Inventors: Kazuyuki Yokoyama, Akihiro Goto
  • Patent number: 7892410
    Abstract: To form a thick coating by a discharge surface treatment, a voltage between an electrode and a workpiece during a discharge is detected, and it is determined that a discharge surface treatment state is abnormal if it is detected that the voltage is reduced. With this arrangement, it is possible to accurately detect an unstable phenomenon in the discharge surface treatment, and take appropriate measures before a state of the coating and a state of the electrode are worsened due to the unstable phenomenon. By discriminating a stability of the discharge surface treatment, the coating and the electrode are prevented from being damaged.
    Type: Grant
    Filed: February 9, 2004
    Date of Patent: February 22, 2011
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Akihiro Goto, Masao Akiyoshi, Katsuhiro Matsuo, Hiroyuki Ochiai, Mitsutoshi Watanabe, Takashi Furukawa
  • Publication number: 20110035917
    Abstract: According to the present invention, there is provided an automatic rotating-type turret device for work machinery, in which a lift-type turret is not used. The configuration makes it possible for a clutch device to lock a turret using one drive device (actuator), and generates a wedge effect, thereby obviating the need for a large driving force capable of directly countering a load during cutting operation. The turret can even be locked using air or a small driving force generated by a motor and obviates the need for hydraulics.
    Type: Application
    Filed: July 30, 2010
    Publication date: February 17, 2011
    Applicant: O-M LTD.
    Inventors: Tatsuo Shimizu, Takio NAKAMURA, Akihiro Goto, Yuki Noguchi
  • Publication number: 20110027099
    Abstract: Formation of a protective coating having oxidation resistance on a portion to be processed of a component main body by employing an electrode composed of a molded body molded from mixed powders of one or more of an aluminum powder, an aluminum alloy powder, a chromium powder and a chromium alloy powder, or the molded body processed with a heat treatment, generating a pulsing electric discharge between the portion to be processed of the component main body and the electrode in an electrically insulating liquid or gas so that an electrode material of the electrode is adhered to the portion to be processed of the component main body by energy of the electric discharges, and further keeping the portion to be processed of the component main body and the electrode material adhered thereto in high temperatures so that the electrode material adhered thereto diffuses into a base material of the component main body.
    Type: Application
    Filed: October 14, 2010
    Publication date: February 3, 2011
    Applicants: Ishikawajima-Harima Heavy Industries Co., Ltd., MITSUBISHI DENKI KABUSHIKI KAISHA
    Inventors: Hiroyuki Ochiai, Mitsutoshi Watanabe, Mikiya Arai, Akihiro Goto, Masao Akiyoshi
  • Patent number: 7834291
    Abstract: An electrode for electric discharge surface treatment is a green compact formed by molding a metal powder, a metal compound powder, or a ceramic powder, and is used for electric discharge surface treatment in which an electric discharge is generated between the electrode and a work in dielectric fluid or air to form by the electric discharge energy on a surface of the work a coat of a material of the electrode or of a substance resulting from reaction of the material due to the electric discharge energy. The material of the electrode includes a material not desired to be carbonized and a material desired to be melted, and a particle diameter of the material not desired to be carbonized is larger than a particle diameter of the material desired to be melted.
    Type: Grant
    Filed: November 4, 2005
    Date of Patent: November 16, 2010
    Assignees: Mitsubishi Denki Kabushiki Kaisha, Ishikawajima-Harima Heavy Industries Co., Ltd.
    Inventors: Akihiro Goto, Masao Akiyoshi, Katsuhiro Matsuo, Hiroyuki Ochiai, Mitsutoshi Watanabe, Takashi Furukawa
  • Patent number: 7824159
    Abstract: What disclosed is to form an abrasive coating having abrasiveness at a blade pressure side of a deposition layer using a second electrode composed of a second molded body molded from a mixed powder including a powder of a metal and a powder of a ceramic or the second electrode processed with a heat treatment, generating pulsing electric discharges between the blade pressure side of the deposition layer and the second electrode in an electrically insulating liquid or gas, and welding a material of the second electrode or a reacting substance of the material of the second electrode on the blade pressure side of the deposition layer by means of energy of the electric discharges.
    Type: Grant
    Filed: January 14, 2005
    Date of Patent: November 2, 2010
    Assignees: Ishikawajima-Harima Heavy Industries Co., Ltd., Mitsubishi Denki Kabushiki Kaisha
    Inventors: Hiroyuki Ochiai, Mitsutoshi Watanabe, Akihiro Goto, Masao Akiyoshi
  • Publication number: 20100208305
    Abstract: A management label has a color loss determination area that enables easy determination of color loss. An identification color printing area 11 where an inventory control color for managing products and a color loss determination area 15 for determining color loss are printed on the label side 10a of an inventory management label 10. The color loss determination area 15 contains a color loss determination section 18 including the letters “NG” printed with a black coloring agent, and a background portion 19 that is printed using cyan, magenta, and yellow coloring agents. When there is no color loss and the letters “NG” and background portion 19 are printed normally, the letters “NG” and background portion 19 are both gray and the “NG” letters cannot be read. If one of the colors is lost, the printed colors change, the letters “NG” become discernable, and color loss can be easily determined.
    Type: Application
    Filed: April 28, 2010
    Publication date: August 19, 2010
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Kazuyuki Yokoyama, Akihiro Goto
  • Patent number: 7776409
    Abstract: A method of evaluating an electrode for discharge surface treatment for generating a discharge between the electrode and a workpiece in a treatment liquid or in the air using a green compact obtained by molding a metal, metal compound, or ceramic powder or other green compact obtained by heating the green compact as the electrode, and forming a coat consisting of an electrode material or a substance obtained by a reaction of the electrode material by a discharge energy on a surface of the workpiece, includes evaluating a capability of the electrode to deposit the coat based on an amount of deposition of the electrode material on the surface of the workpiece by a single discharge.
    Type: Grant
    Filed: December 9, 2005
    Date of Patent: August 17, 2010
    Assignees: Mitsubishi Denki Kabushiki Kaisha, Ishikawajima-Harima Heavy Industries Co.
    Inventors: Akihiro Goto, Masao Akiyoshi, Katsuhiro Matsuo, Hiroyuki Ochiai, Mitsutoshi Watanabe, Takashi Furukawa
  • Publication number: 20100203345
    Abstract: An objective is to provide an electrical-discharge surface-treatment electrode by which a high-coverage zinc coating film can be formed. The electrical-discharge surface-treatment electrode is made by uniformly distributing and compression-molding zinc-based powders including at least one of a pure-metal zinc powder and a metal zinc powder whose surface is oxidized, and zinc-oxide powders whose content rate ranges from 5 to 90 volume percent with respect to the zinc-based powders, to obtain a porosity ranging from 10 to 55 volume percent; then, the zinc coating film is formed using the electrical-discharge surface-treatment electrode.
    Type: Application
    Filed: October 31, 2008
    Publication date: August 12, 2010
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Yoshikazu Nakano, Takeshi Araki, Akihiro Goto