Patents by Inventor Takao Ikenaga
Takao Ikenaga 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: 8999593Abstract: An ejector apparatus for a fuel cell includes an ejector main body including an inlet port, an outlet port, a suction port, and an oxidizer-gas supply port, a first to third chambers provided in the body, a nozzle having a nozzle hole discharging the fuel gas, a diffuser mixing the fuel gas discharged from the nozzle hole and the fuel offgas exhausted from the fuel cell and returned to the suction port, a needle fixed on a side of the body and extending along an axial direction of the nozzle in a hollow portion thereof, and first and second diaphragms arranged to oppose each other, and changing an opening area in a gap between the nozzle hole and an outer peripheral face of a top end of the needle, wherein a pressure receiving area of the first diaphragm is set to be larger than that of the second diaphragm.Type: GrantFiled: January 24, 2012Date of Patent: April 7, 2015Assignees: Keihin Corporation, Honda Motor Co., Ltd.Inventors: Takahide Kato, Takao Ikenaga, Kazunori Fukuma
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Publication number: 20140084195Abstract: A solenoid valve includes first and second attraction portions in the interior of a housing disposed on an upper part of a valve body. A movable iron core, which confronts the first and second attraction portions, is disposed displaceably in the housing. Further, in the interior of the first attraction portion, which is recessed in a concave shape, a first guide body is installed, the first guide body being formed in a cylindrical shape from a non-magnetic material, and a first rod member of the movable iron core is supported displaceably in axial directions by the first guide body. On the other hand, a cylindrically shaped second guide body is disposed on a lower end of the housing, and a second rod member of the movable iron core is supported displaceably in the axial directions by the second guide body.Type: ApplicationFiled: September 26, 2013Publication date: March 27, 2014Applicants: HONDA MOTOR CO., LTD., KEIHIN CORPORATIONInventors: Koji Hakoda, Hideto Hiramoto, Takao Ikenaga, Ryoichi Yoshitomi
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Publication number: 20120189927Abstract: An ejector apparatus for a fuel cell includes an ejector main body including an inlet port, an outlet port, a suction port, and an oxidizer-gas supply port, a first to third chambers provided in the body, a nozzle having a nozzle hole discharging the fuel gas, a diffuser mixing the fuel gas discharged from the nozzle hole and the fuel offgas exhausted from the fuel cell and returned to the suction port, a needle fixed on a side of the body and extending along an axial direction of the nozzle in a hollow portion thereof, and first and second diaphragms arranged to oppose each other, and changing an opening area in a gap between the nozzle hole and an outer peripheral face of a top end of the needle, wherein a pressure receiving area of the first diaphragm is set to be larger than that of the second diaphragm.Type: ApplicationFiled: January 24, 2012Publication date: July 26, 2012Applicants: HONDA MOTOR CO., LTD., KEIHIN CORPORATIONInventors: Takahide KATO, Takao IKENAGA, Kazunori FUKUMA
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Patent number: 5609747Abstract: A method of dissolving zinc oxide in which, to perform continuous zinc-system electroplating of a steel sheet using an insoluble anode, particularly continuous zinc-nickel alloy electroplating, a dissolution bath is provided in a circuit for a sulfuric acid plating liquid, and zinc oxide is dissolved in the plating liquid in the dissolution bath. The amount of zinc oxide thrown in is controlled during dissolution of zinc oxide so that the pH of the plating liquid at an outlet of the dissolution bath does not exceed 2.3.Type: GrantFiled: August 17, 1995Date of Patent: March 11, 1997Assignee: Kawasaki Steel CorporationInventors: Akio Sakurai, Tamotsu Mizuta, Yasuhide Okada, Hiroshi Nakano, Takao Ikenaga, Osamu Shin, Yuuji Ikenaga
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Patent number: 5573652Abstract: An apparatus for continuously dissolving metal powder for use in plating includes a dissolving tank for dissolving metal powder for used in plating solution in a solvent, a filter for separating the solution containing undissolved residue into an undissolved residue and a filtrate, a recovery tank of the filtrate, and a plating solution storing tank for supplying recovered filtrate to a plating tank. The filter is a porous substance having a plurality of liquid passages in the axial direction thereof, and the filter is provided with a circuit for returning a liquid solution containing the undissolved residue passed through the passages to the dissolving tank and a pipeline for leading the filtrate to the recovery tank.A method of dissolving a nickel metal, which has a specific surface of 0.003 m.sup.2 /g or more, is dissolved with the use of the above-described apparatus.Type: GrantFiled: February 28, 1995Date of Patent: November 12, 1996Assignee: Kawasaki Steel CorporationInventors: Syuji Kiyama, Osamu Shin, Kaoru Mizumoto, Takashi Sekita, Hiroshi Ogaki, Akio Sakurai, Takao Ikenaga, Ichiro Tanokuchi, Naoki Sakai
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Patent number: 5435848Abstract: An apparatus for controlling thickness of a coated film of paint on a continuously moving sheet member. A paint in a paint pan is picked up through a gap h.sub.PA formed between a pickup roll and an applicator roll, part of the paint is attached to the applicator roll and delivered to a sheet as a supply flow rate q.sub.A. The film thickness coated on the sheet is controlled in accordance with a model equation: M={(q.sub.A -q.sub.L)'.gamma.'C}/LS which has evaluated a difference between the supply flow rate q.sub.A and a leak flow rate q.sub.L not transferred onto the sheet, remaining on the applicator roll and escaping through a gap h.sub.AS (.XI. is the specific gravity of the paint, C the concentration of a solid content of the paint and LS a moving speed of the sheet).Type: GrantFiled: December 17, 1993Date of Patent: July 25, 1995Assignee: Kawasaki Steel CorporationInventors: Ichiro Tanokuchi, Takao Ikenaga
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Patent number: 5310573Abstract: A paint in a paint pan is picked up through a gap h.sub.PA formed between a pickup roll and an applicator roll, part of the paint is attached to the applicator roll and delivered to a sheet as a supply flow rate q.sub.A. The film thickness coated on the sheet is controlled in accordance with a model equation: M={(q.sub.A -q.sub.L).multidot..gamma..multidot.C}/LS which has evaluated a difference between the supply flow rate q.sub.A and a leak flow rate q.sub.L not transferred onto the sheet, remaining on the applicator roll and escaping through a gap h.sub.AS (.gamma. is the specific gravity of the paint, C the concentration of a solid content of the paint and LS a moving speed of the sheet).Type: GrantFiled: October 20, 1992Date of Patent: May 10, 1994Assignee: Kawasaki Steel CorporationInventors: Ichiro Tanokuchi, Takao Ikenaga
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Patent number: 4967425Abstract: The present invention relates to a sanitary equipment which is provided in a toilet attached to a clean room. The side surface of the body of the sanitary equipment is made almost vertical, and fixation elements for fastening the body of the equipment onto the wall of the toilet do not protrude into the toilet. As a result, air is circulated through the toilet in such a manner that the air flowing down in the toilet is not disturbed.Type: GrantFiled: April 10, 1989Date of Patent: November 6, 1990Assignee: Toto, Ltd.Inventors: Seijiro Kawamura, Masami Iida, Akio Kusumoto, Takao Ikenaga, Toshifumi Shigematsu, Hiroshi Okada
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Patent number: 4962550Abstract: A toilet has a device for measuring constituents of voided urine. The toilet has a urine reservoir having a surface contiguous to a bowl surface including a urine receiving surface. Urine examined by the measuring device is sampled from the urine reservoir.Type: GrantFiled: August 24, 1988Date of Patent: October 16, 1990Assignees: Toto, Ltd., Omron Tateisi Electronics Co.Inventors: Takao Ikenaga, Toshifumi Shigematsu, Masatoshi Yada, Shigeru Makita, Hitoshi Kitaura
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Patent number: 4961431Abstract: A toilet device with a health examination system, includes a urine sampler for sampling a portion of urine from a urine receiver, a urine analyzer for measuring the proportion of a particular constituent of the urine, a measuring unit for measuring at least one of the blood pressure, heart rate, and temperature of a user of the urine receiver, and a display unit for displaying the results of measurement by the urine sampler, the urine analyzer, and the measuring unit.Type: GrantFiled: January 27, 1988Date of Patent: October 9, 1990Assignee: Toto, Ltd.Inventors: Takao Ikenaga, Toshifumi Shigematsu, Akio Kusumoto, Kimiyoshi Yamamoto, Masatoshi Yada
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Patent number: 4692951Abstract: This invention relates to a sanitary facility room to be installed in a computer room or a clean room found in a manufacturing factory for a semiconductor element wherein the water supplying means is operated by a control part received a sensed signal from the sensing means by a sensing operation of the sensing means for a human body, a cleaning water is supplied to the sanitary device to form water films at the inner surface of the sanitary device and to perform an automatic cleaning of the sanitary device.Type: GrantFiled: October 24, 1985Date of Patent: September 15, 1987Assignee: Toto Ltd.Inventors: Masaru Taki, Hiroshi Okada, Seijiro Kawamura, Akio Kusumoto, Koji Morita, Takao Ikenaga, Toshifumi Shigematsu, Masami Iida
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Patent number: 4667350Abstract: This invention relates to a lavatory hopper flushing apparatus, particularly, a lavatory hopper flushing apparatus comprising a sensor unit capable of detecting the use of any one of a plurality of lavatory hoppers arranged side by side, and providing a detection signal upon the detection of the use of any one of the lavatory hoppers; a control unit capable of being actuated by the detection signal; and a water supply unit capable of being driven by the control unit so as to flush all the lavatory hoppers simultaneously; wherein the control unit capable of being actuated by the detection signal given by a sensor unit and driving a water supply unit includes a counter control unit which has a counting circuit that counts the frequency of the detection signal and which provides an output signal when the count of the detection signals reaches a predetermined number, and an output control unit which provides an output signal to actuate the water supply unit, upon the reception of the output signal given by the coType: GrantFiled: August 25, 1986Date of Patent: May 26, 1987Assignee: Toto Ltd.Inventors: Takao Ikenaga, Toshifumi Shigematsu, Tatsumi Hamanaka, Manabu Hirahara