Patents by Inventor Hajime Ikuno
Hajime Ikuno 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: 8360632Abstract: A thermal fatigue testing device that includes a gas cooling component, a tube member, and a heat generating body is provided. The gas cooling component cools a blown gas to a predetermined temperature or less, and that is provided with a heat insulating member at an outer side surface thereof. The tube member has a gas flow path formed therein from a first end to a second end, is provided at an outer side surface thereof with a heat radiating portion from the second end to a first intermediate portion, and is connected with the gas cooling component at the first end side. A test body is arranged at the second end side. The heat generating body is provided in the gas flow path between the first end and a second intermediate portion and heats a gas flowing through the gas flow path.Type: GrantFiled: March 22, 2010Date of Patent: January 29, 2013Assignee: Kabushiki Kaisha Toyota Chuo KenkyushoInventor: Hajime Ikuno
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Patent number: 7975557Abstract: A multiple testing system has plural testing units which are disposed independently, and a single information processing device. The testing unit has a frame, a loading mechanism supported at the frame and applying a desired load quantity on a test body, and a detector detecting a load quantity applied on the test body. By multitasking control and with respect to the testing units, the information processing device carries out: feedback control processing for, on the basis of a detected load quantity, controlling the loading mechanism such that the detected load quantity becomes a predetermined target value; control processing at an abnormal situation when at least one of an abnormality of the test body, an abnormality of the testing unit, or an abnormality of a power source of the loading mechanism, is detected; and interface processing with an operator.Type: GrantFiled: January 19, 2007Date of Patent: July 12, 2011Assignee: Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Hiroshi Hohjo, Hajime Ikuno
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Patent number: 7959856Abstract: Aluminum alloys and castings are provided that have excellent practical fatigue resistances. The alloy includes, based upon 100 mass %, 4-12 mass % of Si, less than 0.2 mass % of Cu, 0.1-0.5 mass % of Mg, 0.2-3.0 mass % of Ni, 0.1-0.7 mass % of Fe, 0.15-0.3 mass % of Ti, and the balance of aluminum (Al) and impurities. The alloy has a metallographic structure, which includes a matrix phase primarily of ?-Al and a skeleton phase crystallizing around the matrix phase in a network shape. The matrix phase is strengthened by precipitates containing Mg. Because of the strengthened matrix phase, and the skeleton phase that surrounds it, the castings have high strength, high fatigue strength, and high thermo-mechanical fatigue resistance.Type: GrantFiled: October 14, 2004Date of Patent: June 14, 2011Assignee: Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Hajime Ikuno, Hiroshi Hohjo, Yoshihiko Sugimoto, Isamu Ueda, Hiroaki Iwahori
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Publication number: 20100246632Abstract: A thermal fatigue testing device that includes a gas cooling component, a tube member, and a heat generating body is provided. The gas cooling component cools a blown gas to a predetermined temperature or less, and that is provided with a heat insulating member at an outer side surface thereof. The tube member has a gas flow path formed therein from a first end to a second end, is provided at an outer side surface thereof with a heat radiating portion from the second end to a first intermediate portion, and is connected with the gas cooling component at the first end side. A test body is arranged at the second end side. The heat generating body is provided in the gas flow path between the first end and a second intermediate portion and heats a gas flowing through the gas flow path.Type: ApplicationFiled: March 22, 2010Publication date: September 30, 2010Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHOInventor: Hajime IKUNO
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Patent number: 7682469Abstract: A piston made of aluminum cast alloy having a main body section in an approximately cylindrical shape, atop face section provided and arranged so as to occlude one end of the main body section, and a pin boss section in which a pin hole is provided so as to penetrate through the main body section in a radial direction. The piston comprises an aluminum cast alloy containing Mg (Magnesium): equal to or less than 0.2 mass %, Ti (Titanium) 0.05-0.3 mass %, Si (Silicon): 10-21 mass %, Cu (Copper): 2-3.5 mass %, Fe (Iron): 0.1-0.7 mass %, Ni (Nickel): 1-3 mass %, P (Phosphorus): 0.001-0.02 mass %, Al (Aluminum): the remaining portions, and impurities.Type: GrantFiled: July 17, 2003Date of Patent: March 23, 2010Assignee: Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Hajime Ikuno, Yoshihiko Sugimoto, Hiroshi Hohjo
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Publication number: 20080006149Abstract: A compressor having a housing formed by a plurality of housing members that are connected together is disclosed. The compressor is configured in such a manner that refrigerant is compressed in the housing and discharged to the exterior. Each of the housing members contains 9 to 17 percent by mass of Si, 3.5 to 6 percent by mass of Cu, 0.2 to 1.2 percent by mass of Mg, 0.2 to 1.5 percent by mass of Fe, 0 to 1 percent by mass of Mn, 0.5 percent by mass or less of Ni, and a remaining portion containing Al and unavoidable impurities. It is preferred that the average hardness of each housing member is adjusted to HV130 to HV170 through solution heating in which the housing member is maintained at the treatment temperature of 450° C. to 510° C. for 0.5 hours or longer, followed by water quenching, and then by aging treatment in which the housing member is maintained at the treatment temperature of 170° C. to 230° C. for one to twenty-four hours after the c housing member is cast.Type: ApplicationFiled: July 3, 2007Publication date: January 10, 2008Inventors: Takayuki Kato, Fuminobu Enokijima, Masaki Inoue, Hajime Ikuno, Akira Yamada, Hiroshi Hohjo, Hiroshi Kawahara, Shoji Hotta, Isamu Ueda
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CAST ALUMINUM ALLOY EXCELLENT IN RELAXATION RESISTANCE PROPERTY AND METHOD OF HEAT-TREATING THE SAME
Publication number: 20080000561Abstract: A cast aluminum alloy excellent in the relaxation resistance property, comprising 9 to 17% by mass of Si, 3 to 6% by mass of Cu, 0.2 to 1.2% by mass of Mg, 0.2 to 1.5% by mass of Fe, 0.1 to 1% by mass of Mn, a balance consists of Al and unavoidable impurities, wherein a Ni content is not more than 0.5% by mass. The average hardness is adjusted to HV130 to HV160 by performing, after casting, solution heating by retaining the alloy at a treatment temperature of 450 to 510° C. for 0.5 hour or longer, performing water quenching and, thereafter, performing aging treatment by retaining the alloy at a treatment temperature of 170 to 230° C. for 1 to 24 hours.Type: ApplicationFiled: June 27, 2007Publication date: January 3, 2008Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHOInventors: Hajime IKUNO, Akira Yamada, Hiroshi Hohjo, Hiroshi Kawahara, Shoji Hotta, Isamu Ueda -
Publication number: 20070169563Abstract: A multiple testing system has plural testing units which are disposed independently, and a single information processing device. The testing unit has a frame, a loading mechanism supported at the frame and applying a desired load quantity on a test body, and a detector detecting a load quantity applied on the test body. By multitasking control and with respect to the testing units, the information processing device carries out: feedback control processing for, on the basis of a detected load quantity, controlling the loading mechanism such that the detected load quantity becomes a predetermined target value; control processing at an abnormal situation when at least one of an abnormality of the test body, an abnormality of the testing unit, or an abnormality of a power source of the loading mechanism, is detected; and interface processing with an operator.Type: ApplicationFiled: January 19, 2007Publication date: July 26, 2007Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHOInventors: Hiroshi Hohjo, Hajime Ikuno
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Publication number: 20050100473Abstract: Aluminum alloys and castings are provided that have excellent practical fatigue resistances. The alloy includes, based upon 100 mass %, 4-12 mass % of Si, less than 0.2 mass % of Cu, 0.1-0.5 mass % of Mg, 0.2-3.0 mass % of Ni, 0.1-0.7 mass % of Fe, 0.15-0.3 mass % of Ti, and the balance of aluminum (Al) and impurities. The alloy has a metallographic structure, which includes a matrix phase primarily of ?-Al and a skeleton phase crystallizing around the matrix phase in a network shape. The matrix phase is strengthened by precipitates containing Mg. Because of the strengthened matrix phase, and the skeleton phase that surrounds it, the castings have high strength, high fatigue strength, and high thermo-mechanical fatigue resistance.Type: ApplicationFiled: October 14, 2004Publication date: May 12, 2005Applicant: Kabushiki Kaisha Toyota Chuo KenkushoInventors: Hajime Ikuno, Hiroshi Hohjo, Yoshihiko Sugimoto, Isamu Ueda, Hiroaki Iwahori
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Publication number: 20040057865Abstract: A piston made of aluminum cast alloy having a main body section in an approximately cylindrical shape, atop face section provided and arranged so as to occlude one end of the main body section, and a pin boss section in which a pin hole is provided so as to penetrate through the main body section in a radial direction. The piston comprises an aluminum cast alloy containing Mg (Magnesium): equal to or less than 0.2 mass %, Ti (Titanium) 0.05-0.3 mass %, Si (Silicon): 10-21 mass %, Cu (Copper): 2-3.5 mass %, Fe (Iron): 0.1-0.7 mass %, Ni (Nickel): 1-3 mass %, P (Phosphorus): 0.001-0.02 mass %, Al (Aluminum): the remaining portions, and impurities.Type: ApplicationFiled: July 17, 2003Publication date: March 25, 2004Applicant: Kabushiki Kaisha Toyota ChuoInventors: Hajime Ikuno, Yoshihiko Sugimoto, Hiroshi Hohjo
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Patent number: 5980103Abstract: An apparatus and method for testing thermal fatigue resistance. The apparatus utilizes a unified heating device and cooling device so that the apparatus is smaller and simpler and a more even temperature distribution can be obtained. The apparatus has at least one gas duct facing the test unit and a device for supplying the duct with a compressed gas flow. A plurality of gas ducts may be used which face plural points on the test unit from plural directions. Thermocouples are placed on several points on the test unit and the temperatures of the points measured. Swift and precise testing of thermal fatigue resistance can be performed by a feedback control of each heating device based on the measured temperature. Thermal strains are caused in certain parts of the test unit due to differences of thermal expansion between members of the test unit.Type: GrantFiled: October 24, 1996Date of Patent: November 9, 1999Assignee: Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Hajime Ikuno, Masanao Hori
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Patent number: 4961990Abstract: A fiber and fibrous material for producing composite materials, fiber-reinforced metals, fiber-reinforced plastics and fiber-reinforced ceramics, in which short fibers, whiskers or powders made of heat resistant material are deposited on continuous fibers made of heat resistant material.The composite materials, such as fiber-reinforced metals, plastics, and ceramics, contain the fibrous material in a matrix, and have improved control of the fiber volume ratio and mechanical characteristics. Processes for producing the fiber, fibrous materials and composite materials are also disclosed.Type: GrantFiled: June 15, 1987Date of Patent: October 9, 1990Assignees: Kabushiki Kaisha Toyota Chuo Kenkyusho, Ube Industries, Ltd.Inventors: Senichi Yamada, Shinichi Towata, Hajime Ikuno, Takemi Yamamura, Toshihiro Ishikawa, Masaki Shibuya