Patents by Inventor Koichi Sakamoto
Koichi Sakamoto 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).
-
ROTARY MACHINE STATE OBSERVATION DEVICE, ROTARY MACHINE, AND ROTARY MACHINE STATE OBSERVATION METHOD
Publication number: 20170342993Abstract: A state observation device (30) uses an ADC (37) to digitize a detection signal from a gap sensor (21) at a low-speed sampling period and uses a separation unit (38) to separate the digitized detection signal into vane detection signals considered to be for the detection of a vane of a compressor impeller and non-vane detection signals considered not to be for the detection of a vane. Further, the determination unit (39) extracts a vane peak detection signal considered to be for a vane peak by comparing a vane detection signal with vane detection signals corresponding to other vanes and non-vane detection signals, and a shaft vibration and tip clearance are determined as states of the compressor impeller on the basis of the extracted vane peak detection signal. Thus, the state observation device (30) is capable of observing the state of a rotary machine without carrying out high-speed sampling.Type: ApplicationFiled: October 6, 2015Publication date: November 30, 2017Inventors: Tadashi Yoshida, Shinji Ogawa, Koichi Sakamoto, Yukihiro Iwasa -
Publication number: 20170335431Abstract: Disclosed herein is a method for deoxidizing an Al—Nb—Ti alloy, which includes melting and holding an Al—Nb—Ti alloy containing from 50 to 75 mass % of Al, from 5 to 30 mass % of Nb, and 80 mass % or less in total of Al and Nb by a melting method using a water-cooled copper vessel in an atmosphere of 1.33 Pa to 2.67×105 Pa at a temperature of 1,900 K or more, thereby decreasing an oxygen content thereof. The Al—Nb—Ti alloy is prepared using an alloy material formed of an aluminum material, a niobium material and a titanium material and containing oxygen in a total amount of 0.5 mass % or more.Type: ApplicationFiled: November 4, 2015Publication date: November 23, 2017Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Daisuke MATSUWAKA, Fumiaki KUDO, Tetsushi DEURA, Hitoshi ISHIDA, Koichi SAKAMOTO
-
Publication number: 20170283906Abstract: A method for deoxidizing a Ti—Al alloy includes melting and holding a Ti—Al alloy containing 40 mass % or more of Al by a melting method using a water-cooled copper vessel in an atmosphere of 1.33 Pa or more, thereby decreasing an oxygen content in the Ti—Al alloy. The Ti—Al alloy is manufactured using an alloy material composed of a titanium material and an aluminum material. The alloy material contains oxygen in a total amount of 0.1 mass % or more.Type: ApplicationFiled: September 2, 2015Publication date: October 5, 2017Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Fumiaki KUDO, Daisuke MATSUWAKA, Tetsushi DEURA, Koichi SAKAMOTO, Daiki TAKAHASHI, Hitoshi ISHIDA
-
Patent number: 9725779Abstract: A Si-killed steel wire rod for obtaining a spring excellent in fatigue properties and a spring excellent in fatigue properties obtained from such steel wire rod are provided. In the Si-killed steel wire rod of the present invention, oxide-based inclusions present in the wire rod contain SiO2: 30-90%, Al2O3: 2-35%, MgO: 35% or below (not inclusive of 0%), CaO: 50% or below (not inclusive of 0%), MnO: 20% or below (not inclusive of 0%) and BaO: 0.2-20% respectively, and total content of (CaO+MgO) is 3% or above.Type: GrantFiled: December 14, 2015Date of Patent: August 8, 2017Assignee: KOBE STEEL, LTD.Inventors: Tomoko Sugimura, Koichi Sakamoto
-
Publication number: 20170138258Abstract: Provided is an integrated coal gasification combined cycle equipped with: a gasifier that generates combustible gas from pulverized coal; a gas cooler; gas turbine equipment; an auxiliary fuel supply unit that supplies an auxiliary fuel to the gas turbine equipment; a heat recovery steam generator; steam turbine equipment; generators; and a circulation line unit that circulates cooling water. The heat recovery steam generator has a first medium-pressure coal economizer and a second medium-pressure coal economizer. When the combustible gas generated from the pulverized coal is burned, a serial heat exchange line is formed wherein cooling water passes through the first medium-pressure coal economizer, the second medium-pressure coal economizer, and the gas cooler. When the auxiliary fuel is burned, separate heat exchange lines are formed, wherein the cooling water separately passes through the first medium-pressure coal economizer and the second medium-pressure coal economizer.Type: ApplicationFiled: June 26, 2015Publication date: May 18, 2017Inventors: Naoshige YOSHIDA, Koichi SAKAMOTO, Kenichiro KOSAKA, Tetsuya KIZU, Yoshinori KOYAMA, Takashi FUJII, Osamu SHINADA
-
Patent number: 9441695Abstract: High cleanliness spring steel useful in manufacturing a spring with SiO2-based inclusions being extremely controlled and excellent in fatigue properties is provided. High cleanliness spring steel which is steel containing; C: 1.2% (means mass %, hereafter the same with respect to the component) or below (not inclusive of 0%), Si: 1.2-4%, Mn: 0.1-2.0%, Al: 0.01% or below (not inclusive of 0%), and the balance comprising iron with inevitable impurities, wherein; the total of oxide-based inclusions of 4 or above of L (the large diameter of an inclusion)/D (the short diameter of an inclusion) and 25 ?m or above of D and oxide-based inclusions of less than 4 L/D and 25 ?m or above of L, in the oxide-based inclusions of 25 mass % or above of oxygen concentration and 70% (means mass %, hereafter the same with respect to inclusions) or above of SiO2 content when Al2O3+MgO+CaO+SiO2+MnO=100% is presumed, out of inclusions in the steel, is 20 nos./500 g or below.Type: GrantFiled: January 9, 2015Date of Patent: September 13, 2016Assignee: Kobe Steel, Ltd.Inventors: Tomoko Sugimura, Sei Kimura, Koichi Sakamoto, Atsuhiko Yoshida, Takeshi Inoue
-
Patent number: 9387528Abstract: Provided is a nozzle incorporating a valve, which easily improves durability. The nozzle for spraying water to a targeted object, including a nozzle body provided with a passage of water and a valve arranged inside the passage of the nozzle body, wherein at least a part of an inner surface of the passage including a portion to have contact with the valve is coated by diamond-like carbon.Type: GrantFiled: June 26, 2013Date of Patent: July 12, 2016Assignee: PRIMETALS TECHNOLOGIES JAPAN, LTD.Inventors: Koichi Sakamoto, Yoichi Haraguchi, Yuji Ikemoto
-
Publication number: 20160130674Abstract: A Si-killed steel wire rod for obtaining a spring excellent in fatigue properties and a spring excellent in fatigue properties obtained from such steel wire rod are provided. In the Si-killed steel wire rod of the present invention, oxide-based inclusions present in the wire rod contain SiO2: 30-90%, Al2O3: 2-35%, MgO: 35% or below (not inclusive of 0%), CaO: 50% or below (not inclusive of 0%), MnO: 20% or below (not inclusive of 0%) and BaO: 0.2-20% respectively, and total content of (CaO+MgO) is 3% or above.Type: ApplicationFiled: December 14, 2015Publication date: May 12, 2016Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel. Ltd.)Inventors: Tomoko SUGIMURA, Koichi Sakamoto
-
Patent number: 9290822Abstract: A Si-killed steel wire rod for obtaining a spring excellent in fatigue properties and a spring excellent in fatigue properties obtained from such steel wire rod are provided. In the Si-killed steel wire rod of the present invention, oxide-based inclusions present in the wire rod contain SiO2: 30-90%, Al2O3: 2-35%, MgO: 35% or below (not inclusive of 0%), CaO: 50% or below (not inclusive of 0%), MnO: 20% or below (not inclusive of 0%) and BaO: 0.2-20% respectively, and total content of (CaO+MgO) is 3% or above.Type: GrantFiled: December 3, 2007Date of Patent: March 22, 2016Assignee: Kobe Steel, Ltd.Inventors: Tomoko Sugimura, Koichi Sakamoto
-
Patent number: 9181733Abstract: In a vehicle door handle system, a handle is pivotally supported by a base member, at least one portion of the base member being attached to an outer panel; and a lever member is pivotally supported by a spindle fixed to the base member and having an axis at a right angle to a plane extending along the outer panel, the lever member being interlocked and connected with a handle arm configured to pivot with the handle and the lever member being linked to a latch device. An attachment part which attaches the base member to the outer panel is disposed coaxially with the spindle. Accordingly, it is possible to attach the base member to the outer panel while avoiding the bulkiness of conventional systems.Type: GrantFiled: January 7, 2011Date of Patent: November 10, 2015Assignees: Kabushiki Kaisha Honda Lock, Honda Motor Co., Ltd.Inventors: Hiroto Fujiwara, Koichi Sakamoto, Yuujiro Tashima
-
Publication number: 20150224551Abstract: Provided is a nozzle header which sprays pressurized water to a high-temperature object, capable of inhibiting a member provided to spray nozzles from being deformed or damaged by heat at the time of operation, caused by radiation heat from the high-temperature object. The nozzle header for spraying water to a targeted object includes a header which supplies pressurized water, one or more of spray nozzles which spray the pressurized water supplied from the header, and a heat removal structure attached so as to be in contact with at least one of the spray nozzles, wherein the heat removal structure includes a coolant passage through which a cooling medium for cooling the heat removal structure itself and the spray nozzles passes.Type: ApplicationFiled: June 26, 2013Publication date: August 13, 2015Inventors: Yoichi Haraguchi, Koichi Sakamoto, Manabu Eto, Yuji Ikemoto, Kenji Horii
-
Publication number: 20150217351Abstract: Provided is a nozzle incorporating a valve, which easily improves durability. The nozzle for spraying water to a targeted object, including a nozzle body provided with a passage of water and a valve arranged inside the passage of the nozzle body, wherein at least a part of an inner surface of the passage including a portion to have contact with the valve is coated by diamond-like carbon.Type: ApplicationFiled: June 26, 2013Publication date: August 6, 2015Inventors: Koichi Sakamoto, Yoichi Haraguchi, Yuji Ikemoto
-
Publication number: 20150211816Abstract: Disclosed is an aluminum composite material including an aluminum alloy material containing magnesium, and a bonding material formed by brazing using a flux, the bonding material being adapted to bond the aluminum alloy material thereto. In the aluminum composite material, the bonding material contains a magnesium-containing compound other than KMgF3 and MgF2. The present invention provides an aluminum composite material with satisfactory brazeability to an aluminum alloy material containing magnesium, a heat exchanger including the aluminum composite material, and a flux suitable for use in braze.Type: ApplicationFiled: August 14, 2013Publication date: July 30, 2015Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Nobuhiro Kobayashi, Motohiro Horiguchi, Koichi Sakamoto, Toshiki Ueda, Shimpei Kimura, Takahiro Izumi
-
Patent number: 9062361Abstract: A Si-killed steel wire rod for obtaining a spring excellent in fatigue properties and a spring excellent in fatigue properties obtained from the steel wire rod are provided. The Si-killed steel wire rod of the present invention contains Sr: 0.03-20 ppm (means “mass ppm”, hereinafter the same), Al: 1-30 ppm and Si: 0.2-4% (means “mass %”, hereinafter the same) respectively, and contains Mg and/or Ca by a range of 0.5-30 ppm in total. Also, in the Si-killed steel wire rod of the present invention, oxide-based inclusions present in the wire rod contain SiO2: 30-90%, Al2O3: 2-50%, MgO: 35% or below (not inclusive of 0%), CaO: 50% or below (not inclusive of 0%), MnO: 20% or below (not inclusive of 0%) and SrO: 0.2-15% respectively, and total content of (CaO+MgO) is 3% or above. A spring excellent in fatigue properties can be obtained by forming the spring from such steel wire rod.Type: GrantFiled: December 3, 2007Date of Patent: June 23, 2015Assignee: Kobe Steel, Ltd.Inventors: Tomoko Sugimura, Koichi Sakamoto
-
Publication number: 20150118097Abstract: High cleanliness spring steel useful in manufacturing a spring with SiO2-based inclusions being extremely controlled and excellent in fatigue properties is provided. High cleanliness spring steel which is steel containing; C: 1.2% (means mass %, hereafter the same with respect to the component) or below (not inclusive of 0%), Si: 1.2-4%, Mn: 0.1-2.0%, Al: 0.01% or below (not inclusive of 0%), and the balance comprising iron with inevitable impurities, wherein; the total of oxide-based inclusions of 4 or above of L (the large diameter of an inclusion)/D (the short diameter of an inclusion) and 25 ?m or above of D and oxide-based inclusions of less than 4 L/D and 25 ?m or above of L, in the oxide-based inclusions of 25 mass % or above of oxygen concentration and 70% (means mass %, hereafter the same with respect to inclusions) or above of SiO2 content when Al2O3 +MgO+CaO+SiO2+MnO=100% is presumed, out of inclusions in the steel, is 20 nos./500 g or below.Type: ApplicationFiled: January 9, 2015Publication date: April 30, 2015Applicant: KABUSHIKI KAISHA KOBE SEIKO SHO (Kobe Steel, Ltd.)Inventors: Tomoko SUGIMURA, Sei KIMURA, Koichi SAKAMOTO, Atsuhiko YOSHIDA, Takeshi INOUE
-
Publication number: 20150047745Abstract: Disclosed is a flux composition for use in brazing of an aluminum alloy material and includes a flux component [A] containing KAlF4; and a fluoride [B] containing an element other than Group 1 elements and Group 2 elements and containing no potassium (K). Also disclosed is a brazing sheet which includes an aluminum alloy core; a filler material lying on or over at least one side of the core; and a flux layer lying on or over one side of the filler material and including the flux composition.Type: ApplicationFiled: October 17, 2012Publication date: February 19, 2015Applicant: Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)Inventors: Nobuhiro Kobayashi, Motohiro Horiguchi, Koichi Sakamoto, Toshiki Ueda, Shimpei Kimura, Takahiro Izumi
-
Patent number: 8900381Abstract: Disclosed is a spring steel which contains, by mass, 1.2% or less C; 0.1% to 2% Mn; 0.2% to 3% Si; 0.0003% to 0.005% Al; to 8 ppm Li; 30 ppm or less (excluding 0 ppm) Ca; and 10 ppm or less (excluding 0 ppm) Mg. The steel contains oxide inclusions satisfying the following conditions (1) to (3) in a number of 1×10?4 or more per square millimeter: (1) containing a total of 80 percent by mass or more of Al2O3 and SiO2 based on the inclusion composition excluding Li2O; (2) having a ratio by mass of Al2O3 to SiO2 of from 1:4 to 2:3; and (3) containing lithium (Li). The spring steel gives a spring that exhibits superior fatigue properties without strict control of the average composition of inclusions.Type: GrantFiled: September 30, 2008Date of Patent: December 2, 2014Assignee: Kobe Steel, Ltd.Inventors: Tomoko Sugimura, Koichi Sakamoto, Atsuhiko Yoshida, Kei Masumoto
-
Patent number: 8634657Abstract: An image processing device includes: a first arithmetic operation unit that individually calculates an evaluation value based upon first factors, in correspondence to each of a plurality of images included in an image batch input thereto; an exclusion unit that executes exclusion processing based upon calculation results provided by the first arithmetic operation unit so as to exclude an image, the calculation results for which satisfy a predetermined condition, from the image batch; a second arithmetic operation unit that individually calculates an evaluation value based upon second factors, which include a factor different from the first factors, in correspondence to each image in the image batch having undergone the exclusion processing; and an evaluation processing unit that ranks individual images in the image batch having undergone the exclusion processing based upon calculation results provided by the second arithmetic operation unit.Type: GrantFiled: March 29, 2011Date of Patent: January 21, 2014Assignee: Nikon CorporationInventor: Koichi Sakamoto
-
Patent number: 8613809Abstract: High cleanliness spring steel useful in manufacturing a spring with SiO2-based inclusions being extremely controlled and excellent in fatigue properties is provided. High cleanliness spring steel which is steel containing; C: 1.2% (means mass %, hereafter the same with respect to the component) or below (not inclusive of 0%), Si: 1.2-4%, Mn: 0.1-2.0%, Al: 0.01% or below (not inclusive of 0%), and the balance comprising iron with inevitable impurities, wherein; the total of oxide-based inclusions of 4 or above of L (the large diameter of an inclusion)/D (the short diameter of an inclusion) and 25 ?m or above of D and oxide-based inclusions of less than 4 L/D and 25 ?m or above of L, in the oxide-based inclusions of 25 mass % or above of oxygen concentration and 70% (means mass %, hereafter the same with respect to inclusions) or above of SiO2 content when Al2O3+MgO+CaO+SiO2+MnO=100% is presumed, out of inclusions in the steel, is 20 nos./500 g or below.Type: GrantFiled: May 23, 2007Date of Patent: December 24, 2013Assignee: Kobe Steel, Ltd.Inventors: Tomoko Sugimura, Sei Kimura, Koichi Sakamoto, Atsuhiko Yoshida, Takeshi Inoue
-
Patent number: 8273292Abstract: The present invention provides a steel for machine and structural use which sustains mechanical properties such as strength by reducing S content, and exerts excellent machinability (in particular, tool life) in both of intermittent cutting with HSS tools and continuous cutting with carbide tools. The invention relates to a steel for machine and structural use which contains an oxide inclusion containing, wherein a total mass of an average composition of the oxide inclusions is 100%: CaO: 10 to 55 mass %; SiO2: 20 to 70 mass %; Al2O3: more than 0 and 35 mass % or less; MgO: more than 0 and 20 mass % or less; MnO: more than 0 and 5 mass % or less; and one or more members selected from the group consisting of Li2O, Na2O, K2O, BaO, SrO and TiO2: 0.5 to 20 mass % in total.Type: GrantFiled: January 20, 2009Date of Patent: September 25, 2012Assignee: Kobe Steel, Ltd.Inventors: Koichi Sakamoto, Motohiro Horiguchi, Shogo Murakami, Hiroshi Yaguchi, Shinsuke Masuda, Koichi Akazawa