Patents by Inventor Tsuyoshi Nakagawa
Tsuyoshi Nakagawa 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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Publication number: 20050111171Abstract: A labor of disconnecting many cables is omitted even when carrying a file basestation with an external storage loaded together with a main body. An information processing unit comprises: a main body having a CPU, a keyboard and a display unit; a file basestation with an external storage, such as an FD·D or a CD ROM·D, loaded; and a portreplicator with many connectors loaded. Removal of the main body alone from the portreplicator can omit the labor of disconnecting many cables connected to the portreplicator.Type: ApplicationFiled: December 15, 2004Publication date: May 26, 2005Inventors: Hideki Kamimaki, Yukihide Inagaki, Tsuyoshi Nakagawa, Koichi Kimura, Hideaki Gemma, Hitoshi Kawaguchi
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Patent number: 6898078Abstract: A labor of disconnecting many cables is omitted even when carrying a file basestation with an external storage loaded together with a main body. An information processing unit comprises: a main body having a CPU, a keyboard and a display unit; a file basestation with an external storage, such as an FD•D or a CD-ROM•D, loaded; and a portreplicator with many connectors loaded. Removal of the main body alone from the portreplicator or removal of the main body and the file basestation can omit the labor of disconnecting many cables connected to the portreplicator.Type: GrantFiled: June 25, 2002Date of Patent: May 24, 2005Assignee: Hitachi, Ltd.Inventors: Hideki Kamimaki, Yukihide Inagaki, Tsuyoshi Nakagawa, Koichi Kimura, Hideaki Gemma, Hitoshi Kawaguchi
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Patent number: 6885556Abstract: An electronic apparatus includes a case mounting a semiconductor element within an inside thereof, a heat-receiving member thermally connected with the semiconductor element, a heat-radiation member disposed on an inner side surface of the casing, and a liquid driver for driving a liquid coolant between the heat-radiation member and the heat-receiving member. The apparatus further includes a tank accumulating the liquid coolant therein with at least a predetermined volume of the coolant to delimit a coolant surface within the tank, wherein the tank, the heat-radiation member and the heat-receiving member are connected with tubes, and a suction end portion of a suction pipe connected into the tank is located at a position which is always below the coolant surface irrespective of change of position of the tank.Type: GrantFiled: June 24, 2004Date of Patent: April 26, 2005Assignee: Hitachi, Ltd.Inventors: Yoshihiro Kondo, Shinji Matsushita, Shigeo Ohashi, Takashi Naganawa, Rintaro Minamitani, Tsuyoshi Nakagawa, Yuuji Yoshitomi, Masato Nakanishi, Hajime Katou
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Publication number: 20050082036Abstract: A cooling device for an electronic apparatus includes a heat generating element attached within a housing, a heat receiving jacket connectable with the heat generating element, a heat exchanger for exchanging heat between the heat receiving jacket and outside of the electronic apparatus and a liquid driver which supplies a cooling liquid to the heat receiving jacket. A part of pipework connected between the heat receiving jacket, the heat exchanger, and the liquid driver is made of a flexible tube of resin, and an ion exchanger is provided in a portion of the pipework. The cooling liquid has a corrosion inhibitor therein.Type: ApplicationFiled: October 20, 2004Publication date: April 21, 2005Inventors: Rintaro Minamitani, Shigeo Ohashi, Yoshihiro Kondo, Yuji Yoshitomi, Takashi Naganawa, Masato Nakanishi, Tsuyoshi Nakagawa
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Publication number: 20050078450Abstract: A water-cooling device for cooling a heat-generating element within an electronic apparatus. The water-cooling device includes a water-cooling jacket which is thermally connectable with the heat-generating element, a heat-radiation pipe, a tank, and a liquid driver which forms a circulation flow passage through which a cooling liquid flows. At least one of the water-cooling jacket, the heat-radiation pipe, the tank and the liquid driver is attached on a plate, and the water-cooling device is detachable with respect to the heat-generating element by the plate.Type: ApplicationFiled: October 20, 2004Publication date: April 14, 2005Inventors: Shigeo Ohashi, Yoshihiro Kondo, Rintaro Minamitani, Takashi Naganawa, Yuuji Yoshitomi, Masato Nakanishi, Hajime Katou, Tsuyoshi Nakagawa
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Patent number: 6879485Abstract: In an information processing apparatus such as a space-saving type personal computer having a liquid-cooling type cooling system, the presence of a cooling liquid, the presence of a frozen state of the cooling liquid and the temperature of the cooling liquid are detected. When a freeze of the cooling liquid is detected, a CPU is throttled down to defrost the cooling liquid, or the cooling liquid is heated to be prevented from being frozen. Alternatively, a warning of detection of a freeze may be displayed. Alternatively, activation of the system may be stopped or operation of the system may be interrupted. By such measures, system failure is prevented from being caused by leaking, shortage, freezing, etc. of the cooling liquid.Type: GrantFiled: August 1, 2003Date of Patent: April 12, 2005Assignee: Hitachi, Ltd.Inventors: Tsuyoshi Nakagawa, Kenichi Nagashima, Kenichi Saito, Masahito Suzuki, Hajime Yamagami, Masato Kurita, Yasushi Neho
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Patent number: 6873525Abstract: A liquid cooling system includes a pump for supplying a cooling liquid including water, a heat receiving jacket supplied with the cooling liquid and positioned to receive heat generated from a heat generation body, a heat radiation portion for radiating heat which is supplied by the cooling liquid passing through the heat receiving jacket, and a member for circulating the cooling liquid passing through the heat radiation portion into the pump. Different parts of the liquid cooling system are provided with different corrosion resistance against the cooling liquid.Type: GrantFiled: February 18, 2004Date of Patent: March 29, 2005Assignee: Hitachi, Ltd.Inventors: Rintaro Minamitani, Makoto Kitano, Noriyuki Ashiwake, Shigeo Ohashi, Yoshihiro Kondo, Takashi Naganawa, Yuji Yoshitomi, Tsuyoshi Nakagawa
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Publication number: 20050065399Abstract: An adapter for an endoscope of the present invention includes: a locking device for attaching and detaching that attaches and locks this adapter for an endoscope onto a predefined position on an endoscope control part; and a first treatment tool locking device that keeps a treatment tool at a first predefined position. Furthermore, at the first predefined position, a guidewire entry aperture of the treatment tool and an entry aperture of a forceps plug are separated in such a way as to face each other along substantially the same line.Type: ApplicationFiled: July 27, 2004Publication date: March 24, 2005Applicant: OLYMPUS CORPORATIONInventors: Isao Sasaki, Tsuyoshi Nakagawa, Yasushi Okoshi, Jin Ito, Kenichi Adachi, Hiroaki Kubokawa, Hidenobu Kimura, Osamu Tamada, Tae Mitsuya, Takashi Otawara
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Publication number: 20050045309Abstract: In an electronic apparatus, having a heat diffusion structure having high efficiency, for corresponding to small-sizing and high-performances of an electronic part therein, a liquid sealing portion is provide on a cover on a side of the electronic part, which builds up a water-cooling jacket attached on an upper portion of the electronic part. Further, within an inside of this liquid sealing portion, a heat diffusion plate is provided, extending from the vicinity of the center of the water-cooling jacket in zigzag manner. With this, heat generated from the electronic part can be spread all over the cover, as a whole, on the side of the electronic part, with an aid of the evaporation heat of the liquid. The heat spread can be transmitted into the cooling liquid circulating within a housing thereof, through liquid flow passages of the water-cooling jacket, thereby being radiated into the atmosphere from the portion having a large or wide heat radiation area of the housing.Type: ApplicationFiled: March 4, 2004Publication date: March 3, 2005Inventors: Yoshihiro Kondo, Tsuyoshi Nakagawa
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Publication number: 20050047083Abstract: An electronic module which is detachably mounted on electronic equipment. The electronic module includes a board having a heat generator mounted on a surface thereof, and a cooling jacket which is integrally attached to the electronic module. The cooling jacket is thermally coupled to the heat generator and has a passage of a cooling fluid therewithin.Type: ApplicationFiled: October 13, 2004Publication date: March 3, 2005Inventors: Yoshihiro Kondo, Shigeo Ohashi, Rintaro Minamitani, Takashi Naganawa, Yuji Yoshitomi, Masato Nakanishi, Yasuhiko Sasaki, Tsuyoshi Nakagawa, Osamu Suzuki, Shinji Matsushita, Yasunori Yamada
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Publication number: 20050007730Abstract: In the structure of an electronic apparatus, in which cooling of an heat-generating element is achieved through circulation of a liquid, in particular, for providing the structure of being high in cooling performance and reliability, wherein a heat-radiation pipe 9 is connected to a heat-radiation plate 10 disposed in a rear surface of a display 2, while thermally connecting a water-cooling jacket 8 with the heat-generating element 7, thereby circulating a coolant liquid between the water-cooling jacket 8 and the heat-radiation pipe 9 by means of a liquid driving device 11. The water-cooling jacket 8 can be formed in one body of a jacket base and a flow passage therein through the die-cast forming thereof, or can be constructed in one body with the water-cooling jacket and the flow passage of piping, through connection between the jacket base and the metal pipe.Type: ApplicationFiled: July 10, 2002Publication date: January 13, 2005Inventors: Shigeo Ohashi, Yoshihiro Kondo, Rintaro Minamitani, Takashi Naganawa, Yuuji Yoshitomi, Masato Nakanishi, Yasuhiko Sasaki, Tsuyoshi Nakagawa
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Publication number: 20040243013Abstract: A sleepiness level detection device detects a heartbeat signal when a time equal to or longer than T1 and equal to or shorter than T2 has elapsed since the start of driving. The heartbeat signal is subjected to FFT processing to obtain a spectrum signal. By use of a peak frequency of the spectrum signal, a driver conscious-state peak frequency is estimated. A consciousness level index band &agr; is set with respect to the conscious-state peak frequency. A sleepiness level index band &bgr; is set with respect to a frequency, which is calculated by multiplying the conscious-state peak frequency by a predetermined ratio (65 to 90%). A sleepiness level evaluation parameter Sp (=&bgr;p/(&agr;p+&bgr;p)) for indicating the sleepiness level of the driver is calculated with the use of the strength &agr;p and &bgr;p of spectrum signals.Type: ApplicationFiled: May 25, 2004Publication date: December 2, 2004Inventors: Taiji Kawachi, Tsuyoshi Nakagawa, Akiko Ito, Takeshi Yoshinori
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Publication number: 20040233635Abstract: A liquid cooling system having a circulator for circulating a cooling liquid therethrough including an input portion for receiving the cooling liquid and a separate output portion for supplying the cooling liquid. A heat receiving jacket supplied with the cooling liquid from the circulator and positioned to received heat generated from a heat generation body, a heat radiation portion for radiating heat which is supplied by the cooling liquid passing through the heat receiving jacket, and a member for circulating the cooling liquid passing through the heat radiation portion into the circulation means so that the cooling liquid circulates within a closed flow passage. An accumulating portion is further formed within a portion of the closed flow passage for accumulating the cooling liquid therein.Type: ApplicationFiled: May 18, 2004Publication date: November 25, 2004Inventors: Makoto Kitano, Takashi Naganawa, Yuji Yoshitomi, Rintaro Minamitani, Shigeo Ohashi, Noriyuki Ashiwake, Yoshihiro Kondo, Tsuyoshi Nakagawa
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Publication number: 20040228092Abstract: An electronic apparatus includes a case mounting a semiconductor element within an inside thereof, a heat-receiving member thermally connected with the semiconductor element, a heat-radiation member disposed on an inner side surface of the casing, and a liquid driver for driving a liquid coolant between the heat-radiation member and the heat-receiving member. The apparatus further includes a tank accumulating the liquid coolant therein with at least a predetermined volume of the coolant to delimit a coolant surface within the tank, wherein the tank, the heat-radiation member and the heat-receiving member are connected with tubes, and a suction end portion of a suction pipe connected into the tank is located at a position which is always below the coolant surface irrespective of change of position of the tank.Type: ApplicationFiled: June 24, 2004Publication date: November 18, 2004Inventors: Yoshihiro Kondo, Shinji Matsushita, Shigeo Ohashi, Takashi Naganawa, Rintaro Minamitani, Tsuyoshi Nakagawa, Yuuji Yoshitomi, Masato Nakanishi, Hajime Katou
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Publication number: 20040228088Abstract: A liquid cooling system includes a pump for supplying a cooling liquid including water, a heat receiving jacket supplied with the cooling liquid and positioned to receive heat generated from a heat generation body, a heat radiation portion for radiating heat which is supplied by the cooling liquid passing through the heat receiving jacket, and a member for circulating the cooling liquid passing through the heat radiation portion into the pump. Different parts of the liquid cooling system are provided with different corrosion resistance against the cooling liquid.Type: ApplicationFiled: February 18, 2004Publication date: November 18, 2004Inventors: Rintaro Minamitani, Makoto Kitano, Noriyuki Ashiwake, Shigeo Ohashi, Yoshihiro Kondo, Takashi Naganawa, Yuji Yoshitomi, Tsuyoshi Nakagawa
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Patent number: 6809927Abstract: In the structure of an electronic apparatus, in which cooling of an heat-generating element is conducted through circulation of a liquid, in particular, for providing a liquid-cooling structure of being high in reliability, while also considering safety and assembling property into the consideration, wherein a water-cooling jacket 8 is thermally connected with a heat-generating element 7, while thermally connecting a heat-radiation pipe 9 with a heat-radiation plate 10 provided on a rear surface of a display 2, wherein a coolant liquid is circulated between the water-cooling jacket 8 and the heat-radiation pipe 9, by means of a liquid driving device 11. The heat-radiation pipe 9 is connected onto a whole area of the heat-radiation plate, like crawling thereupon. A tank 14 is provided in an upper portion of the heat-radiation plate 10, and is connected with the heat-radiation pipe 9.Type: GrantFiled: May 9, 2003Date of Patent: October 26, 2004Assignee: Hitachi, Ltd.Inventors: Shigeo Ohashi, Yoshihiro Kondo, Rintaro Minamitani, Takashi Naganawa, Yuuji Yoshitomi, Masato Nakanishi, Hajime Katou, Tsuyoshi Nakagawa
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Patent number: 6808014Abstract: A cooling device for an electronic apparatus, comprising: a heat generating element attached within a first housing; a heat receiving jacket, being connected with said heat generating element, and being attached within said first housing; a second housing being rotatably supported on said first housing; a first heat exchanger attached within said second housing, for exchanging heat between an outside; and a liquid driving means for supplying a cooling liquid to said heat receiving jacket, wherein a portion of a pipe for connecting between said heat receiving means, said first heat exchanger, and said liquid driving means is made of a flexible tube made of a resin, and further wherein, a second heat exchanger and an ion exchanger are provided in a part of said pipe, said second housing is received within said second housing, and said ion exchanger is received within said second housing.Type: GrantFiled: May 1, 2003Date of Patent: October 26, 2004Assignee: Hitachi, LtdInventors: Rintaro Minamitani, Shigeo Ohashi, Yoshihiro Kondo, Yuji Yoshitomi, Takashi Naganawa, Masato Nakanishi, Tsuyoshi Nakagawa
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Patent number: 6807056Abstract: A plurality of electronic apparatuses, each apparatus having a closed loop cooling system, are installed in a cabinet having another closed loop fluid cooling system. Each of the closed loop fluid cooling systems includes a heat receiver and a pump. A projection is mounted on the electronic apparatus and a switching valve is arranged on the cabinet to stop or start circulation of a cooling fluid.Type: GrantFiled: July 18, 2003Date of Patent: October 19, 2004Assignee: Hitachi, Ltd.Inventors: Yoshihiro Kondo, Shigeo Ohashi, Rintaro Minamitani, Takashi Naganawa, Yuji Yoshitomi, Masato Nakanishi, Yasuhiko Sasaki, Tsuyoshi Nakagawa, Osamu Suzuki, Shinji Matsushita, Yasunori Yamada
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Publication number: 20040201481Abstract: A vehicle tiredness alleviating system provided with at least one of a vehicle air-conditioning system for controlling a temperature in a passenger compartment, a seat heating system for heating the surface of a seat, and a seat vibration system for repeatedly vibrating a seat for a predetermined time, further provided with a means for judging the tiredness degree of a passenger seated on a seat in the passenger compartment and a means for performing at least one of temperature control of the vehicle air-conditioning system, temperature control of the seat heating system, and control of the vibration strength or vibration time of the seat vibration system.Type: ApplicationFiled: March 18, 2004Publication date: October 14, 2004Inventors: Takeshi Yoshinori, Tsuyoshi Nakagawa
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Patent number: 6798655Abstract: A desk-top type computer with a built-in LCD includes a chassis, a planar display attached to the chassis, a mother board attached to the chassis, heat generating portions including a CPU mounted on the mother board, and a memory device electrically connected to the mother board. A heat receiving head is fixed to at least one of the heat generating portions including the CPU, and the head is connected a tube filled with a cooling liquid. The tube is arranged in a serpentine or zigzag shape in a clearance between the chassis and the planar display facing the chassis. The cooling medium liquid circulating in the tube serves as a heat transferring medium to absorb the heat at the heat generating portion, and radiate the heat through the tube disposed in the clearance between the LCD and the chassis.Type: GrantFiled: January 21, 2003Date of Patent: September 28, 2004Assignee: Hitachi, Ltd.Inventors: Kenichi Nagashima, Masao Miyawaki, Tsuyoshi Nakagawa, Shigenori Yamagata, Tomoyasu Itou, Susumu Saito, Akihiko Seki, Kenichi Saito