Patents by Inventor Takaaki Ikari

Takaaki Ikari 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).

  • Patent number: 10967424
    Abstract: The heater (structure) has the gaps facing the molding wall portion of the casting mold. The casting mold is provided with: the molding wall portion forming the internal space; and the gap-portion filling ports (filling ports) that open to portions of the molding wall portion facing the gaps of the heater and that allow the molten metal to flow into the internal space.
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: April 6, 2021
    Assignee: Marelli Cabin Comfort Japan Corporation
    Inventors: Naohisa Kamiyama, Tetsuzo Nishimura, Makoto Murakami, Ikuo Kataoka, Shinya Sato, Takaaki Ikari
  • Publication number: 20210094093
    Abstract: The casting mold is provided with: the molding wall portion forming the internal space; the supporting portion supports the heater to the molding wall portion; and the filling port allows the molten metal to flow into the internal space. The heater has: the end portion (the fixed portion) supported by supporting portion; and the extending portion extended from the end portion. The internal space has: the supporting region accommodating the end portion; and the extending region accommodating the extending portion. The filling ports respectively open to the portions of the molding wall portion facing the supporting regions.
    Type: Application
    Filed: July 25, 2018
    Publication date: April 1, 2021
    Inventors: Naohisa Kamiyama, Tetsuzo Nishimura, Makoto Murakami, Ikuo Kataoka, Shinya Sato, Takaaki Ikari
  • Publication number: 20200189541
    Abstract: A hydraulic oil resupply device (40) is provided between first accumulators (15F, 15R) in a manual braking operation circuit (11) and a second accumulator (25) in an automatic brake circuit (24). The hydraulic oil resupply device (40) resupplies hydraulic oil accumulated in the second accumulator (25) to the first accumulators (15F, 15R) at the operating of a manual braking operation by an operator. This configuration can suppress a rising speed of a brake pressure at the manual operation braking from being slow. Accordingly, in a vehicular brake system, it is possible to enhance a braking capability by the manual braking operation and improve the reliability.
    Type: Application
    Filed: September 26, 2017
    Publication date: June 18, 2020
    Inventors: Takaaki TANAKA, Takanobu IKARI, Yasutaka TSURUGA, Takayuki SATOU, Takashi SASAKI
  • Publication number: 20200164427
    Abstract: The heater (structure) has the gaps facing the molding wall portion of the casting mold. The casting mold is provided with: the molding wall portion forming the internal space; and the gap-portion filling ports (filling ports) that open to portions of the molding wall portion facing the gaps of the heater and that allow the molten metal to flow into the internal space.
    Type: Application
    Filed: July 25, 2018
    Publication date: May 28, 2020
    Inventors: Naohisa Kamiyama, Tetsuzo Nishimura, Makoto Murakami, Ikuo Kataoka, Shinya Sato, Takaaki Ikari
  • Patent number: 10583743
    Abstract: In a regenerative braking device of a dump truck comprising an engine, a first generator and a second generator driven by the engine, at least one travel motor driven by generated electric power of the first generator and at least one fan motor to which generated electric power of the second generator is inputted via a first rectifier circuit, the regenerative braking device comprises: a resistive element to which regenerating electric power from the at least one travel motor in regenerative braking is supplied and which is cooled by at least one fan driven by the at least one fan motor and converts electric energy into heat energy and dissipates heat; and a DC/DC converter that inputs a part of the regenerating electric power which is supplied to the resistive element to an output line of the first rectifier circuit via a second rectifier circuit.
    Type: Grant
    Filed: September 8, 2016
    Date of Patent: March 10, 2020
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Tomonori Takada, Takanobu Ikari, Takashi Ikimi, Akihiro Nakamura, Masatsugu Arai, Naoki Fukuda, Takaaki Tanaka
  • Publication number: 20200010060
    Abstract: An automatic brake subsystem (24) includes second accumulators (25F, 25R), a front second line (28) and a rear second line (29), second brake valves (30F, 30R), a first solenoid switching valve (32), first shuttle valves (33F, 33R), and a controller 37. A second solenoid switching valve (34F) and a pressure sensor (35F) are provided in the front second line (28), and a second solenoid switching valve (34R) and a pressure sensor (35R) are provided in the rear second line (29). In a case where it is determined that each of the second brake valve (30F, 30R) is not performing normally based upon a pressure of a hydraulic fluid detected by each of the pressure sensors (35F, 35R) and an operating signal supplied to the first solenoid switching valve (32) or each of the second brake valves (30F, 30R), a controller 37 performs control to switch each of the second solenoid switching valves (34F, 34R).
    Type: Application
    Filed: July 27, 2018
    Publication date: January 9, 2020
    Inventors: Takaaki TANAKA, Takanobu IKARI, Yasutaka TSURUGA, Takayuki SATO, Takashi SASAKI
  • Patent number: 9724754
    Abstract: There are provided a method of manufacturing an aluminum product and a method of manufacturing an aluminum brake caliper each using die casting, for improving flow and run of molten metal during casting and enhancing productivity and quality. In a method of manufacturing an aluminum product provided with opposing portions opposed to each other with a hollow portion interposed in between, and connecting portions connecting the opposing portions at two sides thereof, the method includes a die casting step of performing casting by pouring molten metal of an aluminum alloy from a gate for the molten metal formed in one of the opposing portions via the connecting portions and a bridge connecting the two opposing portions, and a bridge removing step of removing the bridge.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: August 8, 2017
    Assignee: NIPPON LIGHT METAL COMPANY, LTD.
    Inventors: Shinya Sato, Takaaki Ikari
  • Publication number: 20140360633
    Abstract: There are provided a method of manufacturing an aluminum product and a method of manufacturing an aluminum brake caliper each using die casting, for improving flow and run of molten metal during casting and enhancing productivity and quality. In a method of manufacturing an aluminum product provided with opposing portions opposed to each other with a hollow portion interposed in between, and connecting portions connecting the opposing portions at two sides thereof, the method includes a die casting step of performing casting by pouring molten metal of an aluminum alloy from a gate for the molten metal formed in one of the opposing portions via the connecting portions and a bridge connecting the two opposing portions, and a bridge removing step of removing the bridge.
    Type: Application
    Filed: December 4, 2012
    Publication date: December 11, 2014
    Inventors: Shinya Sato, Takaaki Ikari
  • Patent number: 6866085
    Abstract: The newly proposed cast aluminum alloy product has the composition consisting of 6.5-8.0% Si, 0.25-0.45% Mg, 0.08-0.40% Fe, 0.001-0.01% Ca, P less than 0.001%, 0.02-0.1% Ti, 0.001-0.01% B, optionally one or two of 0.05-0.3% Cr and 0.05-0.2% Mn, and the balance being Al except inevitable impurities. It has the metallurgical structure that an ?-Al phase in a surface layer is of average grain size different by 50 ?m or less from an ?-Al phase in an inner part, and that a maximum size of eutectic Si particles is 400 ?m or smaller. It is manufactured by injecting a molten aluminum alloy into metal dies at an injection speed of 0.05-0.25 m/second, and then cooling the injected alloy at a cooling speed of 20° C./or higher in a temperature range between liquidus and solidus curves in a state charged with a pressure of 30 MPa or higher. Since the cast product is good of ductility, it is used as a member for coupling another member therewith by calking or the like.
    Type: Grant
    Filed: May 13, 2002
    Date of Patent: March 15, 2005
    Assignees: Nippon Light Metal Co., Ltd., Denso Corporation
    Inventors: Akio Hashimoto, Takaaki Ikari, Hiromi Takagi, Sumi Yoshikawa
  • Patent number: 6648054
    Abstract: The present invention provides a die-casting method comprising the steps of evacuating a cavity 30 defined by dies of a die-casting machine to provide therein a vacuum of 100 millibar or less during a first period, injecting a reactive gas from a sleeve of the die-casting machine into the cavity 30 during a second period which has a partial overlap period with the first period and follows the overlap period, so as to increase the inner pressure of the cavity to atmospheric pressure or more, pouring a molten aluminum alloy M into the sleeve 40 while keeping the injection of the reactive gas, and subsequently moving a plunger 42 in the sleeve forward to forcibly inject the molten aluminum alloy from the sleeve into the cavity 30 while re-evacuating the cavity 30. The evacuation, reactive-gas injection and re-evacuation operations can be performed with respective overlap periods therebetween.
    Type: Grant
    Filed: July 10, 2002
    Date of Patent: November 18, 2003
    Assignee: Nippon Light Metal Co., Ltd.
    Inventors: Yukio Kuramasu, Osamu Yoshida, Yoshihiro Tajima, Takaaki Ikari
  • Publication number: 20030143101
    Abstract: An aluminum alloy for die casting, contains, in terms of mass percentage: Si in the range of 1.0˜3.5 %; Mg in the range of 2.5˜4.5 %; Mn in the range of 0.3˜1.5%; Fe in the range equal to or less than 0.15%; Ti in the range of equal to or less than 0.20%; and the balance of aluminum and inevitable impurities. A die cast product having good strength and elongation in a high strain rate region is produced from the aluminum alloy without the need for solution heat treatment.
    Type: Application
    Filed: March 17, 2003
    Publication date: July 31, 2003
    Applicant: NISSAN MOTOR CO., LTD
    Inventors: Sanji Kitaoka, Yukio Kuramasu, Syuichi Asakuno, Kenji Tsushima, Masahiko Shioda, Hiroshi Kambe, Shinichiro Sumi, Takaaki Ikari
  • Publication number: 20030041993
    Abstract: The present invention provides a die-casting method comprising the steps of evacuating a cavity 30 defined by dies of a die-casting machine to provide therein a vacuum of 100 millibar or less during a first period, injecting a reactive gas from a sleeve of the die-casting machine into the cavity 30 during a second period which has a partial overlap period with the first period and follows the overlap period, so as to increase the inner pressure of the cavity to atmospheric pressure or more, pouring a molten aluminum alloy M into the sleeve 40 while keeping the injection of the reactive gas, and subsequently moving a plunger 42 in the sleeve forward to forcibly inject the molten aluminum alloy from the sleeve into the cavity 30 while re-evacuating the cavity 30. The evacuation, reactive-gas injection and re-evacuation operations can be performed with respective overlap periods therebetween.
    Type: Application
    Filed: July 10, 2002
    Publication date: March 6, 2003
    Inventors: Yukio Kuramasu, Osamu Yoshida, Yoshihiro Tajima, Takaaki Ikari
  • Publication number: 20030037848
    Abstract: The newly proposed cast aluminum alloy product has the composition consisting of 6.5-8.0% Si, 0.25-0.45% Mg, 0.08-0.40% Fe, 0.001-0.01% Ca, P less than 0.001%, 0.02-0.1% Ti, 0.001-0.01% B, optionally one or two of 0.05-0.3% Cr and 0.05-0.2% Mn, and the balance being Al except inevitable impurities. It has the metallurgical structure that an &agr;-Al phase in a surface layer is of average grain size different by 50 &mgr;m or less from an &agr;-Al phase in an inner part, and that a maximum size of eutectic Si particles is 400 &mgr;m or smaller. It is manufactured by injecting a molten aluminum alloy into metal dies at an injection speed of 0.05-0.25 m/second, and then cooling the injected alloy at a cooling speed of 20° C./or higher in a temperature range between liquidus and solidus curves in a state charged with a pressure of 30 MPa or higher. Since the cast product is good of ductility, it is used as a member for coupling another member therewith by calking or the like.
    Type: Application
    Filed: May 13, 2002
    Publication date: February 27, 2003
    Applicant: Nippon Light Co., Ltd.
    Inventors: Akio Hashimoto, Takaaki Ikari, Hiromi Takagi, Sumi Yoshikawa
  • Publication number: 20020088512
    Abstract: An aluminum alloy for die casting, contains, in terms of mass percentage: Si in the range of 1.0˜3.5%; Mg in the range of 2.5˜4.5%; Mn in the range of 0.3˜1.5%; Fe in the range equal to or less than 0.15%; Ti in the range of equal to or less than 0.20%; and the balance of aluminum and inevitable impurities. A die cast product having good strength and elongation in a high strain rate region is produced from the aluminum alloy without the need for solution heat treatment.
    Type: Application
    Filed: October 22, 2001
    Publication date: July 11, 2002
    Applicant: Nissan Motor Company, Ltd
    Inventors: Sanji Kitaoka, Yukio Kuramasu, Syuichi Asakuno, Kenji Tsushima, Masahiko Shioda, Hiroshi Kambe, Shinichiro Sumi, Takaaki Ikari
  • Publication number: 20010008155
    Abstract: The newly proposed cast aluminum alloy product has the composition consisting of 6.5-8.0% Si, 0.25-0.45% Mg, 0.08-0.40% Fe, 0.001-0.01% Ca, P less than 0.001%, 0.02-0.1% Ti, 0.001-0.01% B, optionally one or two of 0.05-0.3% Cr and 0.05-0.2% Mn, and the balance being Al except inevitable impurities. It has the metallurgical structure that an &agr;-Al phase in a surface layer is of average grain size different by 50 &mgr;m or less from an &agr;-Al phase in an inner part, and that a maximum size of eutectic Si particles is 400 &mgr;m or smaller. It is manufactured by injecting a molten aluminum alloy into metal dies at an injection speed of 0.05-0.25 m/second, and then cooling the injected alloy at a cooling speed of 20° C./or higher in a temperature range between liquidus and solidus curves in a state charged with a pressure of 30 MPa or higher. Since the cast product is good of ductility, it is used as a member for coupling another member therewith by calking or the like.
    Type: Application
    Filed: January 10, 2001
    Publication date: July 19, 2001
    Applicant: NIPPON LIGHT METAL CO., LTD
    Inventors: Akio Hashimoto, Takaaki Ikari, Hiromi Takagi, Sumi Yoshikawa
  • Patent number: 6176294
    Abstract: After a cavity 2 of a die-casting mold 1 is evacuated to exclude gases, oxygen gas is blown into the cavity 2 until an internal pressure of the cavity exceeds the atmospheric pressure, and then a molten metal 5 is forcibly injected into the cavity 2. The cavity 2 is evacuated to a degree of vacuum less than 100 millibar through a suction nozzle 11. The oxygen gas is blown through a nozzle 14 into the cavity 2 so as to fill the cavity 2 with the oxygen gas at an internal pressure higher than the atmospheric pressure. When the molten metal 5 is injected into the cavity 2 clarified in this way, inclusion of gases is perfectly prohibited. As a result, obtained die-cast products are free from defects such as blowholes or porosity caused by inclusion of gases and so useful as functional members as well as structural members.
    Type: Grant
    Filed: July 13, 1999
    Date of Patent: January 23, 2001
    Assignee: Nippon Light Metal Co., Ltd.
    Inventors: Yukio Kuramasu, Takaaki Ikari