Patents by Inventor Tomofumi Shintani
Tomofumi Shintani 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: 10376950Abstract: A blade has a blade, passage extending in a blade height direction, a platform passage formed inside a platform, and a communication passage leading from an outer surface of a shaft-mounted part through the platform passage to the blade passage. An inner surface defining an inflow passage portion of the platform passage includes a shaft-side inner surface that faces a gas path side. The shaft-side inner surface spreads in a direction having more of a component of a blade thickness direction than a component of the blade height direction. An inner surface defining the communication passage joins to the shaft-side inner surface.Type: GrantFiled: September 8, 2016Date of Patent: August 13, 2019Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Keita Takamura, Satoshi Hada, Hidekatsu Atsumi, Tomofumi Shintani
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Publication number: 20180200783Abstract: A blade (50) has a blade, passage (71) extending in a blade height direction (Dwh), a platform passage (81) formed inside a platform (60), and a communication passage (75) leading from an outer surface (93) of a shaft-mounted part (90) through the platform passage (81) to the blade passage (71). An inner surface defining an inflow passage portion (82) of the platform passage (81) includes a shaft-side inner surface (88) that faces a gas path side. The shaft-side inner surface (88) spreads in a direction having more of a component of a blade thickness direction (Dwt) than a component of the blade height direction (Dwh). An inner surface defining the communication passage (75) joins to the shaft-side inner surface (88).Type: ApplicationFiled: September 8, 2016Publication date: July 19, 2018Inventors: Keita TAKAMURA, Satoshi HADA, Hidekatsu ATSUMI, Tomofumi SHINTANI
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Patent number: 9981331Abstract: In order to easily form curved holes and straight holes of desired shapes, an electrochemical machining tool of the present invention comprises a tool body including: an electrode made from an electrically conductive material in a cylindrical shape extending along an axial line and having flexibility, an electrolytic solution flowing through an internal flow channel of the electrode toward a tip side; and an insulating layer coated on an outer circumferential face of the electrode so as to expose the tip of the electrode. A fluid outflow hole is formed in the tool body, passing through the tool body in a radial direction and guiding the electrolytic solution flowing through the flow channel outward in the radial direction, and the electrochemical machining tool further comprises a tube-shaped member selectively opening and closing the fluid outflow hole.Type: GrantFiled: February 14, 2014Date of Patent: May 29, 2018Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Kazuhisa Tamura, Yosuke Mukai, Shin Asano, Tetsuhei Kobayashi, Tomofumi Shintani
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Patent number: 9943919Abstract: Provided is an electrochemical machining apparatus, which includes an electrode (3) that form of a shape which a tube shape is extended, including a flexible conductive material, and is which an electrolyte (W) circulates from a base end side (3b) thereof toward a distal end side (3a) thereof, a current supply unit (6) that causes electric current to flow with respect to the electrode (3) in an extending direction (direction running the Y direction) in which the electrode (3) extends, and a magnetic field generation unit (7) that includes at least one pair of magnets (9) which are disposed to face the electrodes (3) a direction and apply a magnetic field in a direction (X direction) intersecting the extending direction with respect to the electrodes (3).Type: GrantFiled: October 9, 2013Date of Patent: April 17, 2018Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Tetsuhei Kobayashi, Shin Asano, Kazuhisa Tamura, Yosuke Mukai, Tomofumi Shintani
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Patent number: 9889515Abstract: An electrochemical machining tool (3) includes a tool body (10) which has an electrode (11) which is made of a flexible conductive material having a cylindrical shape extending along an axis (O), and inside which an electrolyte (W) flows toward a leading end (10a) side, and an insulating layer (12) coated on an outer circumferential surface of the electrode (11) to expose a leading end surface of the electrode (11), wherein a non-insulation section (15) which exposes the outer circumferential surface of the electrode (11) is formed on the tool body (11), and the non-insulation section (15) is surrounded by the insulating layer (12) from an axial (O) direction.Type: GrantFiled: February 14, 2014Date of Patent: February 13, 2018Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Yosuke Mukai, Kazuhisa Tamura, Shin Asano, Tetsuhei Kobayashi, Tomofumi Shintani
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Patent number: 9878388Abstract: The present invention is an electrochemical machining tool equipped with a tool body that comprises: an electrode that extends along an axial line and inside which a flow channel through which an electrolytic solution flows towards the tip end is formed; an insulating layer covering the outer circumferential surface of the electrode so as to expose the tip end face of the electrode; and a flow channel-partitioning part for partitioning the flow channel into a first flow channel containing the axial line and a second flow channel positioned on the outer circumferential side of the first flow channel. The electrochemical machining tool has a configuration in which a fluid outflow section for directing electrolytic solution, which is flowing through the second flow channel, outward in the radial direction of the tool body is formed on a portion of the circumference of the tool body.Type: GrantFiled: December 4, 2013Date of Patent: January 30, 2018Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Yosuke Mukai, Kazuhisa Tamura, Shin Asano, Tetsuhei Kobayashi, Tomofumi Shintani
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Publication number: 20160303673Abstract: In order to easily form curved holes and straight holes of desired shapes, an electrochemical machining tool of the present invention comprises a tool body including: an electrode made from an electrically conductive material in a cylindrical shape extending along an axial line and having flexibility, an electrolytic solution flowing through an internal flow channel of the electrode toward a tip side; and an insulating layer coated on an outer circumferential face of the electrode so as to expose the tip of the electrode. A fluid outflow hole is formed in the tool body, passing through the tool body in a radial direction and guiding the electrolytic solution flowing through the flow channel outward in the radial direction, and the electrochemical machining tool further comprises a tube-shaped member selectively opening and closing the fluid outflow hole.Type: ApplicationFiled: February 14, 2014Publication date: October 20, 2016Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Kazuhisa TAMURA, Yosuke MUKAI, Shin ASANO, Tetsuhei KOBAYASHI, Tomofumi SHINTANI
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Publication number: 20160074951Abstract: An electrochemical machining tool (3) includes a tool body (10) which has an electrode (11) which is made of a flexible conductive material having a cylindrical shape extending along an axis (O), and inside which an electrolyte (W) flows toward a leading end (10a) side, and an insulating layer (12) coated on an outer circumferential surface of the electrode (11) to expose a leading end surface of the electrode (11), wherein a non-insulation section (15) which exposes the outer circumferential surface of the electrode (11) is formed on the tool body (11), and the non-insulation section (15) is surrounded by the insulating layer (12) from an axial (O) direction.Type: ApplicationFiled: February 14, 2014Publication date: March 17, 2016Inventors: Yosuke MUKAI, Kazuhisa TAMURA, Shin ASANO, Tetsuhei KOBAYASHI, Tomofumi SHINTANI
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Publication number: 20150273602Abstract: The present invention is an electrochemical machining tool equipped with a tool body that comprises: an electrode that extends along an axial line and inside which a flow channel through which an electrolytic solution flows towards the tip end is formed; an insulating layer covering the outer circumferential surface of the electrode so as to expose the tip end face of the electrode; and a flow channel-partitioning part for partitioning the flow channel into a first flow channel containing the axial line and a second flow channel positioned on the outer circumferential side of the first flow channel. The electrochemical machining tool has a configuration in which a fluid outflow section for directing electrolytic solution, which is flowing through the second flow channel, outward in the radial direction of the tool body is formed on a portion of the circumference of the tool body.Type: ApplicationFiled: December 4, 2013Publication date: October 1, 2015Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Yosuke Mukai, Kazuhisa Tamura, Shin Asano, Tetsuhei Kobayashi, Tomofumi Shintani
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Publication number: 20150251262Abstract: Provided is an electrochemical machining apparatus, which includes an electrode (3) that form of a shape which a tube shape is extended, including a flexible conductive material, and is which an electrolyte (W) circulates from a base end side (3b) thereof toward a distal end side (3a) thereof, a current supply unit (6) that causes electric current to flow with respect to the electrode (3) in an extending direction (direction running the Y direction) in which the electrode (3) extends, and a magnetic field generation unit (7) that includes at least one pair of magnets (9) which are disposed to face the electrodes (3) a direction and apply a magnetic field in a direction (X direction) intersecting the extending direction with respect to the electrodes (3).Type: ApplicationFiled: October 9, 2013Publication date: September 10, 2015Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Tetsuhei Kobayashi, Shin Asano, Kazuhisa Tamura, Yosuke Mukai, Tomofumi Shintani
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Patent number: 8827646Abstract: Gas turbine blades which simplify the formation of cooling channels provided inside the turbine blades while simultaneously avoiding loss of turbine blade strength and rigidity due to forming of the cooling channels. Cooling channels provided in the interior of a gas turbine blade include a plurality of straight channel-like base-side elongated holes extending in a longitudinal direction at a base side of the turbine blade, a plurality of straight channel-like tip-side elongated holes extending in a longitudinal direction at a tip side of the turbine blade, and a plurality of communicating hollow portions interposed at connection portions between the two types of elongated holes to allow the two types of elongated holes to communicate with each other, and have larger cross-sectional areas than the channel cross-sectional areas of both elongated holes. The communicating hollow portions are formed to match the position of a platform portion of the turbine blade.Type: GrantFiled: March 15, 2013Date of Patent: September 9, 2014Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Satoshi Hada, Takahiko Imada, Tomofumi Shintani, Katsutoshi Ooe, Norifumi Hirata, Hiroshi Asano
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Patent number: 8506251Abstract: Gas turbine blades which simplify the formation of cooling channels provided inside the turbine blades while simultaneously avoiding loss of turbine blade strength and rigidity due to forming of the cooling channels. Cooling channels provided in the interior of a gas turbine blade include a plurality of straight channel-like base-side elongated holes extending in a longitudinal direction at a base side of the turbine blade, a plurality of straight channel-like tip-side elongated holes extending in a longitudinal direction at a tip side of the turbine blade, and a plurality of communicating hollow portions interposed at connection portions between the two types of elongated holes to allow the two types of elongated holes to communicate with each other, and have larger cross-sectional areas than the channel cross-sectional areas of both elongated holes. The communicating hollow portions are formed to match the position of a platform portion of the turbine blade.Type: GrantFiled: April 25, 2011Date of Patent: August 13, 2013Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Satoshi Hada, Takahiko Imada, Tomofumi Shintani, Katsutoshi Ooe, Norifumi Hirata, Hiroshi Asano
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Publication number: 20110217181Abstract: Provided are gas turbine blades in which it is possible to simplify the formation of cooling channels provided inside the turbine blades while simultaneously avoiding loss of turbine blade strength and rigidity due to forming of the cooling channels. In a gas turbine blade (41), cooling channels (410) provided in the interior thereof include a plurality of straight channel-like base-side elongated holes (401a) that extend in a longitudinal direction at a base side of the turbine blade (41), a plurality of straight channel-like tip-side elongated holes (410b) that extend in a longitudinal direction at a tip side of the turbine blade (41), and a plurality of communicating hollow portions (410c) that are interposed at connection portions between the two types of elongated holes (410a, 410b) to individually allow the two types of elongated holes (410a, 410b) to communicate with each other and that have larger cross-sectional areas than the channel cross-sectional areas of both elongated holes (410a, 410b).Type: ApplicationFiled: April 25, 2011Publication date: September 8, 2011Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Satoshi Hada, Takahiko Imada, Tomofumi Shintani, Katsutoshi Ooe, Norifumi Hirata, Hiroshi Asano
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Publication number: 20110217180Abstract: Provided are gas turbine blades in which it is possible to simplify the formation of cooling channels provided inside the turbine blades while simultaneously avoiding loss of turbine blade strength and rigidity due to forming of the cooling channels. In a gas turbine blade, cooling channels provided in the interior thereof include a plurality of straight channel-like base-side elongated holes that extend in a longitudinal direction at a base side of the turbine blade, a plurality of straight channel-like tip-side elongated holes that extend in a longitudinal direction at a tip side of the turbine blade, and a plurality of communicating hollow portions that are interposed at connection portions between the two types of elongated holes to individually allow the two types of elongated holes to communicate with each other and that have larger cross-sectional areas than the channel cross-sectional areas of both elongated holes.Type: ApplicationFiled: December 6, 2010Publication date: September 8, 2011Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Satoshi Hada, Takahiko Imada, Tomofumi Shintani, Katsutoshi Ooe, Norifumi Hirata, Hiroshi Asano