Patents by Inventor Hiroshi Murakami

Hiroshi Murakami 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: 8368278
    Abstract: A motor comprising a stator having a plurality of magnetic poles disposed in a circumferential direction along an outer periphery thereof, a rotor disposed rotatably around the outer periphery of the stator, and a magnet disposed in a circumferential direction along an inner periphery of the rotor. The stator is formed by laminating sheet-like plates. A plurality of the sheet-like plates including an outermost layer of this laminated body comprises a flat portion substantially perpendicular to the magnet, and an extended portion bent to a direction substantially parallel to the magnet. A part of the sheet-like plate having the extended portion disposed to the outermost side is formed into a thickness smaller than thicknesses of the other parts.
    Type: Grant
    Filed: November 12, 2008
    Date of Patent: February 5, 2013
    Assignee: Panasonic Corporation
    Inventors: Yuichi Yoshikawa, Hiroshi Murakami, Atsuyoshi Koshiba, Haruki Kato, Yasuo Kunishige, Koji Kadowaki, Hiroyuki Asai
  • Patent number: 8350433
    Abstract: It comprises stator including stator core having yoke and a plurality of teeth protruded from yoke, which is formed with slots between adjacent teeth, and rotor having rotor core and permanent magnet formed with a plurality of magnetic poles, which confronts tip ends of teeth via gaps, wherein rotor core is formed by rotor core materials circumferentially equally divided into the predetermined number of divisions, and the least common multiple being N for the number of slots and the number of magnetic poles and the least common multiple being M for the number of slots and the number of divisions, then N is equal to M.
    Type: Grant
    Filed: February 2, 2012
    Date of Patent: January 8, 2013
    Assignee: Panasonic Corporation
    Inventors: Hu Li, Yuichi Yoshikawa, Hiroshi Murakami
  • Patent number: 8348027
    Abstract: The flow of hydraulic fluid induced by sliding movement of a piston in a cylinder is controlled by a pilot-type main valve and a pilot valve, which is a pressure control valve, thereby generating damping force. By thrust from a solenoid actuator, the valve-opening pressure of the pilot valve is controlled, and the pressure in a pilot chamber is also controlled to control the valve-opening pressure of the main valve. When there is a failure, a valve body of the pilot valve is retracted to abut against a fail-safe disk by spring force of a valve spring. Thus, damping force is generated by the fail-safe disk at the downstream side of the pilot valve, and the valve-opening pressure of the main valve is also controlled by the fail-safe disk to obtain an appropriate damping force.
    Type: Grant
    Filed: September 28, 2010
    Date of Patent: January 8, 2013
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventor: Hiroshi Murakami
  • Patent number: 8350439
    Abstract: This motor includes a stator whereupon a plurality of magnetic poles are arranged at first prescribed intervals on the outer circumference section, and a rotor which is rotatively arranged on the outer circumference of the stator by having a prescribed space in between and has permanent magnets magnetized to different polarities at second prescribed intervals. The magnetic pole of the stator forms an extending section which extends from a magnetic pole base section in a direction parallel to the permanent magnet, and the extending length of the extending section in the direction parallel to the permanent magnet is same as that of the magnetic pole base section in the direction parallel to the permanent magnet or shorter.
    Type: Grant
    Filed: October 8, 2008
    Date of Patent: January 8, 2013
    Assignee: Panasonic Corporation
    Inventors: Yuichi Yoshikawa, Hiroshi Murakami, Atsuyoshi Koshiba, Koji Kadowaki, Haruki Kato, Yasuo Kunishige
  • Patent number: 8344570
    Abstract: A rotor (21) is an interior permanent magnet rotor formed of a rotor core (24) in which a plurality of permanent magnets (25) are embedded at predetermined intervals. First protruding portions (26) and second protruding portions (27) are formed on an outer peripheral face of the rotor, the first protruding portions (26) each opposing the vicinity of a central portion of each of the permanent magnets and having a substantially arc-shaped cross section protruding outward and the second protruding portions (27) each opposing the vicinity of an end portion of each of the permanent magnets and protruding outward. One first protruding portion and two second protruding portions correspond to one permanent magnet. The formation of the first and second protruding portions as described above on the outer peripheral face of the rotor makes it possible to sufficiently reduce the torque ripple and the noise caused by the distortion of air-gap magnetic flux distribution.
    Type: Grant
    Filed: March 6, 2009
    Date of Patent: January 1, 2013
    Assignee: Panasonic Corporation
    Inventors: Kiyomi Kawamura, Takashi Ogawa, Hiroshi Murakami, Yuichi Yoshikawa, Yasuyuki Yokouchi
  • Publication number: 20120305349
    Abstract: A shock absorber in which a flow of hydraulic oil caused by sliding movement of a piston in a cylinder is controlled by a pilot type main valve and a pilot valve to generate damping force. The valve-opening operation of the main valve is controlled by adjusting the pressure in a pilot chamber with the pilot valve. A valve block and a solenoid block are connected together into one unit and inserted into a casing before being secured with a nut. At this time, an actuating rod of the solenoid block is engaged with a pilot valve member retained by a pilot spring and a fail-safe spring in a cylindrical portion of a pilot body of the valve block.
    Type: Application
    Filed: May 24, 2012
    Publication date: December 6, 2012
    Inventors: Hiroshi MURAKAMI, Osamu YUNO, Tomohiko FUJIOKA, Takashi NEZU, Shunsuke MORI
  • Publication number: 20120286616
    Abstract: A clutch mechanism moving together with an actuator allows coupling or decoupling an inner rotor to or from a power shaft, thereby controlling a rotation angle. This structure allows a polarity of a magnetic pole of the inner rotor to be the same as that of an opposing magnetic pole of an outer rotor when the motor is driven at a low rpm, so that magnetic fluxes inter-linking with windings can be increased, which results in greater torque. When the motor is driven at a high rpm, the structure allows the polarity of the magnetic pole of the inner rotor to be different from that of the opposing magnetic pole of the outer rotor, so that an amount of leakage flux is increased, and the magnetic fluxes inter-linking with the winding are decreased. As a result, an induction voltage is lowered and a high rpm range is widened.
    Type: Application
    Filed: March 7, 2011
    Publication date: November 15, 2012
    Applicant: PANASONIC CORPORATION
    Inventors: Hu Li, Yuichi Yoshikawa, Hiroshi Murakami, Hideaki Matsuo, Yuichiro Tashiro
  • Publication number: 20120277591
    Abstract: An ultrasound diagnostic apparatus capable of obtaining a high-quality ultrasound image while suppressing the temperature rise in an ultrasound probe. The ultrasound probe includes receive amplification units including amplifiers for amplifying reception signals outputted from a transducer array and a power supply unit for supplying bias current to the amplifiers. The power supply unit changes the bias current it supplies to the amplifiers according to the depth of a reflection position of ultrasonic echo.
    Type: Application
    Filed: April 26, 2012
    Publication date: November 1, 2012
    Inventor: Hiroshi MURAKAMI
  • Publication number: 20120259492
    Abstract: A vehicle includes a first drive device and a second drive device. The first drive device includes a motor, a motor control device, a connection-disconnection device, and a connection-disconnection device controller. When the vehicle is driven in a state where a driving force of the first drive device is substantially zero, or the vehicle is driven only by a driving force of the second drive device, the connection-disconnection device controller couples the connection-disconnection device to establish a connected state of the connection-disconnection device. The motor control device is configured to perform loss reduction control on the motor to reduce at least one of a loss of the motor and a loss in a power transmission path in power transmitted to the first driving wheel, by establishing the connected state of the connection-disconnection device.
    Type: Application
    Filed: April 5, 2012
    Publication date: October 11, 2012
    Applicant: Honda Motor Co., Ltd
    Inventors: Akihiro YAMAMOTO, Junji Kato, Yuichi Nakamura, Hiroshi Murakami
  • Patent number: 8264948
    Abstract: A plurality of system board modules are connected to a crossbar module. An error detection unit detects an error in a packet received from a corresponding system board module. When an error is detected by the error detection unit, a transmission control unit issues a completion data generation request. When receiving the completion data generation request, a packet completion unit generates completion data. When receiving an error packet, a selector circuit outputs a completion packet in which completion data is provided in place of a data unit involving error.
    Type: Grant
    Filed: August 22, 2008
    Date of Patent: September 11, 2012
    Assignee: Fujitsu Limited
    Inventors: Hiroshi Murakami, Yoshihiro Kusano, Gou Sugizaki, Satoshi Nakagawa
  • Publication number: 20120197127
    Abstract: An ultrasound diagnostic apparatus comprises a transducer array for transmitting ultrasonic beams to a subject, a multiplexer for sequentially selecting one channel of reception signal in every N number of channels of reception signals out of a plurality of channels of reception signals outputted from the transducer array which has received receiving ultrasonic echoes from the subject, a plurality of reception signal processors for sequentially processing an N number of channels of reception signals selected by the multiplexer to produce reception data, a beam former for performing beam forming on reception data sequentially produced by the plurality of reception signal processors and having time difference to produce sound ray signals, and an image producing unit for producing an ultrasound image based on the sound ray signals produced by the beam former.
    Type: Application
    Filed: December 28, 2011
    Publication date: August 2, 2012
    Applicant: FUJIFILM CORPORATION
    Inventors: Kenji NAKAMURA, Hiroshi MURAKAMI
  • Publication number: 20120173618
    Abstract: The objective of the present invention is to provide a remote control method which allows a technician, etc. in a support center to remote-control a clinical specimen processing device, and a remote control system, a status informing device and a control apparatus used for such a method. The remote control method of the present invention, which is a remote control method for remote-controlling the clinical specimen processing device that processes a clinical specimen, is designed so that an image of the clinical specimen processing device is picked up by an image pickup device, and the image picked up by the image pickup device is supplied to a control apparatus located at a remote place from the clinical specimen processing device through a communication network so that the picked-up image is displayed on the control apparatus.
    Type: Application
    Filed: March 8, 2012
    Publication date: July 5, 2012
    Inventors: Mizuho NISHIKIORI, Tadayuki Yamaguchi, Hiroshi Murakami
  • Patent number: 8207648
    Abstract: A dual-rotor motor in which inner slot angle ?i is larger than outer slot angle ?o. An inner notched portion is provided on both circumferential ends of an inner head. This inner notched portion provides a broader space between the inner head and an inner rotor toward both utmost ends of the inner head. An outer notched portion is provided on both circumferential ends of an outer head. This outer notched portion provides a broader space between the outer head and the outer rotor toward both utmost ends of the outer head.
    Type: Grant
    Filed: October 9, 2009
    Date of Patent: June 26, 2012
    Assignee: Panasonic Corporation
    Inventors: Hu Li, Yuichi Yoshikawa, Hiroshi Murakami
  • Patent number: 8188260
    Abstract: An object of the present invention is to provide novel ribozyme systems capable of catalyzing tRNA acetylation using various carboxylic acids as acyl donors and uses thereof. Disclosed is a ribozyme catalyzing tRNA acetylation having a structure consisting of the RNA sequence represented by: (formula 1) P1-Z1Z2Z3Z4(N1)1(N1)2 . . . (N1)p-P2-(N2)1(N2)2 . . . (N2)q Y1Y2Y3-(N3)1(N3)2-N4GGN wherein (N1)1-(N1)p each independently represent any monoribonucleotide of U, C, A, and G; p represents 3 or 4; (N2)1-(N2)q each independently represent any monoribonucleotide of U, C, A, and G; q represents 5 or 6; (N3)1-(N3)2 each independently represent any monoribonucleotide of U, C, A, and G; N4 represents any monoribonucleotide of U, C, A, and G; Z1-Z4 each independently represent C or G; Y1-Y3 each independently represent C or G; N represents a monoribonucleotide complementary to A or G; and P1 and P2 represent a domain consisting of any RNA sequence capable of having a stem-loop structure.
    Type: Grant
    Filed: December 5, 2006
    Date of Patent: May 29, 2012
    Assignee: The University of Tokyo
    Inventors: Hiroaki Suga, Hiroshi Murakami
  • Publication number: 20120126651
    Abstract: It comprises stator including stator core having yoke and a plurality of teeth protruded from yoke, which is formed with slots between adjacent teeth, and rotor having rotor core and permanent magnet formed with a plurality of magnetic poles, which confronts tip ends of teeth via gaps, wherein rotor core is formed by rotor core materials circumferentially equally divided into the predetermined number of divisions, and the least common multiple being N for the number of slots and the number of magnetic poles and the least common multiple being M for the number of slots and the number of divisions, then N is equal to M.
    Type: Application
    Filed: February 2, 2012
    Publication date: May 24, 2012
    Applicant: Panasonic Corporation
    Inventors: Hu LI, Yuichi Yoshikawa, Hiroshi Murakami
  • Patent number: 8183732
    Abstract: To improve tranquility and controllability of an iron core-equipped permanent magnet motor with an improved maximum energy product (BH)max by improving shape compatibility of a radial anisotropic magnet, there is provided a radial anisotropic magnet manufacturing method of fixing magnet powder in a net shape so as to maintain a magnetic anisotropic (C-axis) angle of a magnet with respect to a tangential line and for performing a deformation with a flow so as to have a predetermined circular arc shape or a predetermined annular shape. Particularly, by performing a deformation with a viscous flow or an extension flow, a deformability of the magnet is improved, and thus shape compatibility with respect to a thickness is. improved. A C-axis angle ? with respect to a tangential direction is controlled at an arbitrary position and an arbitrary angle so as to reduce cogging torque without separating a magnetic pole into segments.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: May 22, 2012
    Assignee: Panasonic Corporation
    Inventors: Fumitoshi Yamashita, Hiroshi Murakami, Kiyomi Kawamura
  • Patent number: 8180772
    Abstract: An electronic data retrieving apparatus is provided that increases the retrieval accuracy without deteriorating the retrieval efficiency by reflecting differences between the numbers of word appearances due to genres of electronic data in the setting of the retrieval words. The electronic data retrieving apparatus according to the present invention sets the retrieval words of the electronic data not only as a word appearing on a retrieval word setting table of the recorded electronic data for a predetermined number of times (e.g., three times) or more but also a word appearing on the retrieval word setting table and appearing on a retrieval word setting reference table for a predetermined number of times (e.g., three times) or more.
    Type: Grant
    Filed: February 13, 2009
    Date of Patent: May 15, 2012
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hiroshi Murakami, Yoshio Nishimoto
  • Patent number: 8164973
    Abstract: A storage apparatus includes: a plurality of storage sections each of which corresponds to each of a plurality of addresses; a read pointer register that outputs a read pointer indicating an address of a storage section from which data is read; a write pointer register that outputs a write pointer indicating an address of a storage section to which data is written; a control circuit that receives first clock signals of a first frequency and second clock signals of a second frequency that is different from the first frequency, determines selection signals indicating either the first clock signals or the second clock signals on the basis of the read pointer or the write pointer for each of the plurality of storage sections, and outputs the selection signals; and selection circuits selects signals indicated by the selection signals, and outputs the selected signals.
    Type: Grant
    Filed: May 14, 2010
    Date of Patent: April 24, 2012
    Assignee: Fujitsu Limited
    Inventors: Yuuji Konno, Hiroshi Murakami
  • Patent number: 8158431
    Abstract: The objective of the present invention is to provide a remote control method which allows a technician, etc. in a support center to remote-control a clinical specimen processing device, and a remote control system, a status informing device and a control apparatus used for such a method. The remote control method of the present invention, which is a remote control method for remote-controlling the clinical specimen processing device that processes a clinical specimen, is designed so that an image of the clinical specimen processing device is picked up by an image pickup device, and the image picked up by the image pickup device is supplied to a control apparatus located at a remote place from the clinical specimen processing device through a communication network so that the picked-up image is displayed on the control apparatus.
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: April 17, 2012
    Assignee: Sysmex Corporation
    Inventors: Mizuho Nishikiori, Tadayuki Yamaguchi, Hiroshi Murakami
  • Patent number: 8145956
    Abstract: An information processing apparatus includes partitioning mode information retaining section, hardware resource management information retaining section, failure notifying section, operation mode detecting section, shared hardware resource judging section, common failure report creating section for creating, if operation in the partitioning mode is detected and a hardware resource in which the failure occurrence has been detected is judged to be a shared resource, a common failure report on the basis of the detection of failure occurrence output by the notifying sections of physical partitions that share the shared hardware resource. That can avoid excessive report of a failure occurred even at a shared hardware resource, making it possible to grasp the accurate number of failure occurrence and to manufacture in a low cost.
    Type: Grant
    Filed: October 22, 2007
    Date of Patent: March 27, 2012
    Assignee: Fujitsu Limited
    Inventor: Hiroshi Murakami