Patents by Inventor Fumio Takeda

Fumio Takeda 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: 10352200
    Abstract: The present invention provides a camshaft capable of suppressing an increase in the number of parts and the number of places to be processed, preventing scratching on a sliding surface that is a part of an outer peripheral surface of an outer shaft and on which an inner cam is rotated, and preventing occurrence of deformation in the entire camshaft after final assembly. A camshaft includes an inner cam that is attached from a radial direction of an outer shaft and that is fixed to an inner shaft with a pin inserted into the inner cam from the radial direction of the outer shaft in a cam surface of the inner cam.
    Type: Grant
    Filed: July 25, 2016
    Date of Patent: July 16, 2019
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Fumio Sato, Hiroshi Takeda, Takuro Yoshimura, Koji Saito
  • Patent number: 10293452
    Abstract: An inner cam has a substantially C-shaped cross section, an arcuately shaped inner circumferential surface of which is ground with high precision by such a honing method. The inner circumferential surface has a discontinuous portion. The honing method includes a fixing step and a grinding step. A plurality of inner cams, in which openings are provided between both ends thereof in the circumferential direction, are stacked, and the arcuately shaped inner circumferential surfaces thereof are subjected to grinding. In the fixing step, the relative positions of the plurality of inner cams are fixed such that a resultant force against the inner cams arranged on both end sides in the stacking direction, and a resultant force against the inner cams arranged on a central side in the stacking direction are opposed to each other mutually at a center location of the stacking direction.
    Type: Grant
    Filed: March 14, 2017
    Date of Patent: May 21, 2019
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Takuro Yoshimura, Fumio Sato, Hiroshi Takeda
  • Patent number: 9732751
    Abstract: In a water-supply line for performing water-supply to the rotors and the mechanical seal of a compressor, or in a condensed-water collection line for collecting condensed water of a dryer into the inlet port of the compressor, a water reservoir is provided at a position higher than the water-supply unit of the compressor. Moreover, there are provided a start-time water-supply line and a solenoid valve set up therein. Here, the start-time water-supply line establishes the connection between the lower portion of the water reservoir, and the inlet port of the compressor and the water-supply unit of the mechanical seal.
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: August 15, 2017
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Fumio Takeda, Masayuki Kasahara, Takehiro Matsuzaka, Tsutomu Nozaki, Hideharu Tanaka
  • Patent number: 9348378
    Abstract: The computer having a module board with semiconductor elements mounted on both sides thereof, a motherboard on which a plurality of units of the module board are mounted, and a rack cabinet on which a plurality of units of the motherboard are mounted includes a thermo-siphon that is thermally connected to the semiconductor elements mounted on one side of the module board, a metal plate that is thermally connected to the semiconductor elements mounted on one side of the module board, a thermally-conductive member that transfers the heat of the metal plate to the thermo-siphon in a situation where the heat of the semiconductor elements mounted on one side of the module board is transferred to the metal plate, and a pressing member that presses the thermo-siphon and the metal plate against the semiconductor elements mounted on the module board.
    Type: Grant
    Filed: April 19, 2012
    Date of Patent: May 24, 2016
    Assignee: HITACHI, LTD.
    Inventors: Yoshihiro Kondo, Takayuki Fujimoto, Fumio Takeda, Takeshi Kato
  • Publication number: 20150216079
    Abstract: There is a problem in a shape of a fin of a boiling heat transfer surface of a conventional cooling system that a boiling nucleus may be stuck to the fin. In contrast, a cooling system of the present invention is provided with a boiling heat transfer surface that vaporizes a refrigerant liquid. Such that the refrigerant liquid forms a thin film at a root and a base portion of a fin for various refrigerants, it is provided with a configuration in which a protruding portion of the fin is inclined from a fin base. Further, it is provided with a configuration in which a notch is provided to the fin base at the fin root. Still further, it is provided with a configuration in which the protruding portion of the fin is cut in a fin base direction.
    Type: Application
    Filed: September 28, 2012
    Publication date: July 30, 2015
    Inventors: Yoshihiro Kondou, Fumio Takeda, Takayuki Fujimoto
  • Publication number: 20150103486
    Abstract: To provide a phase change module as a cooling system capable of saving energy and miniaturizing of the cooling system utilizing a thermo siphon, and an electronic device suitable to mounting such a phase change module. The phase change module 300 includes a jacket case 312 attached with an evaporator surface 311 with the evaporator surface 311 being arranged on a heat generating body, a radiator case 321 attached with cooling fins (radiator) 322 arranged at a position departing from the heat generating body, and a connecting plate 330 that connects the jacket case 312 and the radiator case 321, in which holes are bored in the connecting plate 330 at a position where the jacket case 312 and the radiator case 321 overlap.
    Type: Application
    Filed: October 8, 2014
    Publication date: April 16, 2015
    Inventors: Yoshihiro KONDOU, Fumio TAKEDA, Shigemasa SATO, Shigeyasu TSUBAKI, Takayuki FUJIMOTO
  • Publication number: 20150085442
    Abstract: The computer having a module board with semiconductor elements mounted on both sides thereof, a motherboard on which a plurality of units of the module board are mounted, and a rack cabinet on which a plurality of units of the motherboard are mounted includes a thermo-siphon that is thermally connected to the semiconductor elements mounted on one side of the module board, a metal plate that is thermally connected to the semiconductor elements mounted on one side of the module board, a thermally-conductive member that transfers the heat of the metal plate to the thermo-siphon in a situation where the heat of the semiconductor elements mounted on one side of the module board is transferred to the metal plate, and a pressing member that presses the thermo-siphon and the metal plate against the semiconductor elements mounted on the module board.
    Type: Application
    Filed: April 19, 2012
    Publication date: March 26, 2015
    Inventors: Yoshihiro Kondo, Takayuki Fujimoto, Fumio Takeda, Takeshi Kato
  • Publication number: 20140308148
    Abstract: In a water-supply line for performing water-supply to the rotors and the mechanical seal of a compressor, or in a condensed-water collection line for collecting condensed water of a dryer into the inlet port of the compressor, a water reservoir is provided at a position higher than the water-supply unit of the compressor. Moreover, there are provided a start-time water-supply line and a solenoid valve set up therein. Here, the start-time water-supply line establishes the connection between the lower portion of the water reservoir, and the inlet port of the compressor and the water-supply unit of the mechanical seal.
    Type: Application
    Filed: March 6, 2014
    Publication date: October 16, 2014
    Applicant: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Fumio TAKEDA, Masayuki KASAHARA, Takehiro MATSUZAKA, Tsutomu NOZAKI, Hideharu TANAKA
  • Publication number: 20140090814
    Abstract: The invention relates to a cooling system and an electronic apparatus using the same, and particularly aims to use a thermosiphon as the cooling system and derives an optimum shape (inter-fin gap, fin height, and fin upper-end hole diameter) of a boiling heat transfer surface for different coolants. In a cooling system using a thermosiphon according to the invention, an optimum shape (inter-fin gap, fin height, and fin upper-end hole diameter) of a boiling heat transfer surface of a heat receiving jacket that forms the cooling system is identified based on a critical radius of a steam bubble produced in an overheated liquid and the diameter of an air bubble departing from the heat transfer surface for a variety of coolants.
    Type: Application
    Filed: August 20, 2013
    Publication date: April 3, 2014
    Applicant: Hitachi, Ltd.
    Inventors: Yoshihiro KONDOU, Fumio TAKEDA, Takayuki FUJIMOTO
  • Patent number: 8459957
    Abstract: A water-injected compressor, which injects the water inside the separator 3 into the compressor and discharges the water along with compressed air into the separator and then gains condensed and separated water, has the compressor stopping and then, if staying at a stop for a predetermined duration of time without activating, becoming activated and operating for a set duration of time.
    Type: Grant
    Filed: August 23, 2007
    Date of Patent: June 11, 2013
    Assignee: Hitachi Industrial Equipment Systems, Co., Ltd.
    Inventors: Fumio Takeda, Hitoshi Nishimura, Natsuki Kawabata, Masakazu Aoki
  • Patent number: 8215439
    Abstract: In some preferred embodiments, the dry clutch is capable of suppressing transmission of engine rotational fluctuations from the engine to a rider via a vehicle body. In the dry clutch including a driving member (clutch shoe) 66 and a driven member (clutch drum) 62 configured to be engaged with each other and disengaged from each other in a non-lubricating atmosphere to transmit/intercept the motive power of the engine to a drive wheel, a solid lubricant 70 is interposed between the driving member 66 and the driven member 62.
    Type: Grant
    Filed: July 24, 2009
    Date of Patent: July 10, 2012
    Assignee: Yamaha Hatsudoki Kabushiki Kaisha
    Inventors: Tsuyoshi Sugitani, Mitsukazu Takebe, Fumio Takeda, Atsushi Aoyama, Kotaro Katsuno
  • Publication number: 20090277710
    Abstract: In some preferred embodiments, the dry clutch is capable of suppressing transmission of engine rotational fluctuations from the engine to a rider via a vehicle body. In the dry clutch including a driving member (clutch shoe) 66 and a driven member (clutch drum) 62 configured to be engaged with each other and disengaged from each other in a non-lubricating atmosphere to transmit/intercept the motive power of the engine to a drive wheel, a solid lubricant 70 is interposed between the driving member 66 and the driven member 62.
    Type: Application
    Filed: July 24, 2009
    Publication date: November 12, 2009
    Applicant: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Tsuyoshi SUGITANI, Mitsukazu TAKEBE, Fumio TAKEDA, Atsushi AOYAMA, Kotaro KATSUNO
  • Publication number: 20080089795
    Abstract: A water-injected compressor, which injects the water inside the separator 3 into the compressor and discharges the water along with compressed air into the separator and then gains condensed and separated water, has the compressor stopping and then, if staying at a stop for a predetermined duration of time without activating, becoming activated and operating for a set duration of time.
    Type: Application
    Filed: August 23, 2007
    Publication date: April 17, 2008
    Applicant: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Fumio Takeda, Hitoshi Nishimura, Natsuki Kawabata, Masakazu Aoki
  • Patent number: 7081311
    Abstract: A fuel cell stack has an air chamber to which is introduced compressed air that is produced by compressing the atmosphere with a compressor. Energy is recovered from exhaust discharged from the air chamber as it is expanded by an expander. The compressor and the expander are connected to each other via the air chamber of the fuel cell stack through piping. The pressure of the exhaust flowing through the piping is detected by a pressure sensor and, based on the detected pressure, a throttle valve controls a flow rate of the exhaust drawn into the expander.
    Type: Grant
    Filed: September 9, 2002
    Date of Patent: July 25, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Hirotaka Kameya, Fumio Takeda, Masayuki Kasahara, Hitoshi Nishimura
  • Publication number: 20030049505
    Abstract: A fuel cell stack has an air chamber to which is introduced compressed air that is produced by compressing the atmosphere with a compressor. Energy is recovered from exhaust discharged from the air chamber as it is expanded by an expander. The compressor and the expander are connected to each other via the air chamber of the fuel cell stack through piping. The pressure of the exhaust flowing through the piping is detected by a pressure sensor and, based on the detected pressure, a throttle valve controls a flow rate of the exhaust drawn into the expander.
    Type: Application
    Filed: September 9, 2002
    Publication date: March 13, 2003
    Inventors: Hirotaka Kameya, Fumio Takeda, Masayuki Kasahara, Hitoshi Nishimura
  • Patent number: 5739976
    Abstract: As a method of increasing the storage capacity of a magnetic recording and reproducing apparatus for recording and reproducing information to and from a magnetic tape in a cartridge, there is a helical scan recording method in which the magnetic tape is diagonally wound around a drum which rotates a magnetic head. With an apparatus adapted to this method, the disposition of the cartridge and the take-up reel for taking up the magnetic tape on the same plane arises a necessity of considerably bending the magnetic tape at the drum portion and, accordingly, the magnetic tape is damaged. In order to prevent the damage of the foregoing type, the tape passage surface from the cartridge to the drum and the tape passage from the drum to the take-up reel are formed by an angle at which the direction in which the magnetic tape is moved is changed due to winding of the magnetic tape around the drum so that the magnetic tape is not bent excessively.
    Type: Grant
    Filed: October 30, 1995
    Date of Patent: April 14, 1998
    Assignee: Hitachi, Ltd.
    Inventors: Kazuo Sakai, Fumio Takeda, Taichiro Yamashita, Fujio Tajima, Takao Terayama, Tomokazu Ishii, Kooetsu Okuyama, Takayuki Munemoto, Nobuyuki Kaku, Kenmei Masuda, Shigeyuki Kobata, Fukuyasu Abe, Kenji Ogiro, Shigemitsu Higuchi
  • Patent number: 5570831
    Abstract: A tape guide device having apertures formed in two tape-winding surfaces of non-rotatable curvature portions. A tape restriction is provided at a connecting portion of the tape guide device interconnecting the curvature portions. A flange is provided on one of the curvature portions for movement along an axis thereof to adjust the height thereof. The flange has an outer diameter greater than that of the one curvature portion. The curvature portions are integrated with each other. According this, an air film is generated between the tape and the tape-winding surfaces by discharging air from the apertures, thereby reducing the friction coefficient between the tape and the tape-winding surfaces to suppress the increase of tape tension. The tape is restricted to fluctuate in the direction of width. Further, the attitude and relative positioning between the curvature portions can be secured with high precision.
    Type: Grant
    Filed: December 16, 1993
    Date of Patent: November 5, 1996
    Assignee: Hitachi, Ltd.
    Inventors: Hidekazu Takeda, Kenmei Masuda, Nobuyuki Kaku, Tomoki Shoji, Toshihiro Koyama, Kazuo Sakai, Fumio Takeda
  • Patent number: 5495371
    Abstract: A magnetic recording and reproducing device and a magnetic tape library device are provided for properly recovering a function and issuing a warning when a failure of a magnetic head of the device takes place because of wear and dirt of the magnetic head. Further, a method for maintaining the magnetic head is provided. A wear sensor and a dirt sensor are prepared for sensing a wear amount of a state of dirt of the magnetic head. A head check controller operates to determine the wear amount of the magnetic head and the state of dirt based on the sensed result. In accordance with the determined result, the warning device is started for taking a precaution of preventing a head failure. As one aspect, the tape library device instructs to load the cleaning tape using a robot.
    Type: Grant
    Filed: November 29, 1993
    Date of Patent: February 27, 1996
    Assignee: Hitachi, Ltd.
    Inventors: Takayuki Munemoto, Kazuo Sakai, Fujio Tajima, Tomokazu Ishii, Fumio Takeda, Kouetsu Okuyama, Takeshi Itoh, Shigeyuki Kobata, Kenmei Masuda, Shigemitsu Higuchi
  • Patent number: 5386670
    Abstract: A floor panel having a rectangular floor base integrally with a convex prop in each corner portion and a concave portion on the upper surface of each prop. There is a height adjusting screw with a plate embedded in the concave portion of each prop, variably for adjusting the height of the support position in a predetermined range between a position lower than the upper surface of the prop and a position higher than the upper surface of the prop. A floor panel is supported by each prop of the floor base and has through holes for accessing the height adjusting screw for adjusting the support height at each corner according to the prop. In the method of manufacturing the floor base, a convex portion, which integrally projects to the upper surface side on four corners of a skin, is formed, a concave portion is formed on the lower surface of said convex portion, concrete is packed in the concave portion, thereby forming which is integral to said skin.
    Type: Grant
    Filed: November 29, 1991
    Date of Patent: February 7, 1995
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Fumio Takeda, Yoshio Kojima, Yutaka Ishibashi, Isako Tsushima, Kenji Sugimoto, Hideo Tanaka, Hidetoshi Takahashi, Fumio Sumiyoshi
  • Patent number: 5245805
    Abstract: This invention relates to an interior panel unit having a structure in which a plurality of rectangular floor base members to be installed on a foundation floor of a room are connected to each other by base joint members. A plurality of fundamental support members having the same height and a plurality of connecting support members having the same height as that of the fundamental support members are located on each floor base member. Each floor panel member supported by the fundamental support members and the connecting support members is arranged to assure a predetermined space with the corresponding floor base member. Cables and various types of equipment which constitute an office-automation system are mounted in the space defined by the floor panel member and the floor base member. The space defined by the floor panel member and the floor base member is partitioned by vertical and horizontal separator members. The cables and various types of equipment are appropriately arranged in the partitioned space.
    Type: Grant
    Filed: October 11, 1991
    Date of Patent: September 21, 1993
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Fumio Takeda, Yoshio Kojima, Tsuneo Kaneko, Yutaka Ishibashi, Naoto Sasaki, Isako Tsushima