Patents by Inventor Fumiaki Murakami

Fumiaki 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: 11117769
    Abstract: A sheet conveyance device correcting skew of a sheet being conveyed includes: a rotational shaft extending perpendicularly to a sheet conveyance direction; conveyance rollers disposed at predefined intervals and into which the rotational shaft is inserted; gate members being coaxial with the conveyance rollers and disposed between the conveyance rollers along the rotational shaft, the gate members each having an arc-shaped part partially surrounding the rotational shaft and a stopper protruding radially outwards from the arc-shaped part; and a mounting plate elongated along the rotational shaft and being supported rotatably around the rotational shaft and holding the gate members in a same orientation. After the sheet abuts against at least one of the stoppers, the stoppers are pushed out of the conveyance path by the sheet. When the stoppers are positioned on the conveyance path, openings of the arc-shaped parts face toward a downstream side in the conveyance direction.
    Type: Grant
    Filed: October 9, 2019
    Date of Patent: September 14, 2021
    Assignee: KONICA MINOLTA, INC.
    Inventors: Fumiaki Murakami, Katsumi Kuroyanagi, Shigeru Sawano
  • Publication number: 20200115178
    Abstract: A sheet conveyance device correcting skew of a sheet being conveyed includes: a rotational shaft extending perpendicularly to a sheet conveyance direction; conveyance rollers disposed at predefined intervals and into which the rotational shaft is inserted; gate members being coaxial with the conveyance rollers and disposed between the conveyance rollers along the rotational shaft, the gate members each having an arc-shaped part partially surrounding the rotational shaft and a stopper protruding radially outwards from the arc-shaped part; and a mounting plate elongated along the rotational shaft and being supported rotatably around the rotational shaft and holding the gate members in a same orientation. After the sheet abuts against at least one of the stoppers, the stoppers are pushed out of the conveyance path by the sheet. When the stoppers are positioned on the conveyance path, openings of the arc-shaped parts face toward a downstream side in the conveyance direction.
    Type: Application
    Filed: October 9, 2019
    Publication date: April 16, 2020
    Applicant: KONICA MINOLTA, INC.
    Inventors: Fumiaki MURAKAMI, Katsumi KUROYANAGI, Shigeru SAWANO
  • Patent number: 8083025
    Abstract: A silencer includes an inner cylinder that is connected to an exhaust pipe and a partition cylinder that is accommodated in a housing and that sections an expansion chamber in the housing. A group of partition-cylinder small holes is formed in the partition cylinder, and a group of inner-cylinder small holes is formed in the inner cylinder. The group of partition-cylinder small holes and the group of inner-cylinder small holes do not overlap each other in an axial direction, and are separated from each other by a predetermined distance in the axial direction.
    Type: Grant
    Filed: July 21, 2010
    Date of Patent: December 27, 2011
    Assignee: Honda Motor Co., Ltd.
    Inventors: Fumiaki Murakami, Yoshihiko Eguchi
  • Publication number: 20110236739
    Abstract: A battery pack is disclosed. The battery pack includes angular-shaped battery cells stacked in a stack direction and a battery holder device. The battery holder device presses side surfaces of the battery cells with a load acting along the stack direction. The battery holder device integrally includes multiple surface pressing members each interposed between adjacent battery cells and multiple connection members each connecting adjacent surface pressing members. Rigidity of each connection member against the load acting along the stack direction is smaller than rigidity of each surface pressing member against the load acing along the stack direction.
    Type: Application
    Filed: March 23, 2011
    Publication date: September 29, 2011
    Applicant: DENSO CORPORATION
    Inventors: Masayuki WATANABE, Hisato Inoue, Fumiaki Murakami, Naoki Hiraiwa, Humihiro Kuzuhara
  • Publication number: 20110024228
    Abstract: A silencer includes an inner cylinder that is connected to an exhaust pipe and a partition cylinder that is accommodated in a housing and that sections an expansion chamber in the housing. A group of partition-cylinder small holes is formed in the partition cylinder, and a group of inner-cylinder small holes is formed in the inner cylinder. The group of partition-cylinder small holes and the group of inner-cylinder small holes do not overlap each other in an axial direction, and are separated from each other by a predetermined distance in the axial direction.
    Type: Application
    Filed: July 21, 2010
    Publication date: February 3, 2011
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Fumiaki MURAKAMI, Yoshihiko Eguchi
  • Patent number: 7712453
    Abstract: An object of the invention is to provide a depressurizing valve mounted to a common rail for a fuel injection device, in which a direction of a connector for the depressurizing valve can be adjusted, without affecting an air gap and a sealing performance. The depressurizing valve has a valve unit and a coil unit which is detachably assembled to the valve unit by a mounting member, such as a retaining nut. A valve housing has an inside space, which is fluid tightly separated into first and second spaces by a connecting member, which is fluid tightly connected to the valve housing and a stator core. A valve body and a spring are arranged in the first space for closing a flow control port. A cylindrical coil is accommodated in the second space, such that the coil is rotatable with respect to the valve housing.
    Type: Grant
    Filed: October 13, 2006
    Date of Patent: May 11, 2010
    Assignee: DENSO CORPORATION
    Inventors: Shigeru Nonoyama, Naoki Mitsumata, Fumiaki Murakami
  • Patent number: 7578494
    Abstract: A solenoid valve includes a coil, a stator core, a valve member, a coil spring, and a stopper. The coil provides a magnetic field when the coil is energized. The stator core includes a receiving bore, wherein the stator core generates a magnetic attractive force when the coil is energized. The valve member is attracted toward the stator core due to the magnetic attractive force generated by the stator core. The coil spring is received in the receiving bore of the stator core, wherein the coil spring biases the valve member in an opposite direction opposite from the stator core. The stopper positions the coil spring such that an outer peripheral surface of the coil spring is separated from an inner peripheral surface of the receiving bore.
    Type: Grant
    Filed: February 7, 2007
    Date of Patent: August 25, 2009
    Assignee: Denso Corporation
    Inventors: Naoki Mitsumata, Fumiaki Murakami, Shigeru Nonoyama
  • Patent number: 7552908
    Abstract: A solenoid drive apparatus for driving a driven member by a magnetic attractive force includes a tubular magnetic metallic body, a coil, a magnetic metallic plate, and a magnetic gasket. The tubular magnetic metallic body has an opening portion at one end. The coil is received in the body from the opening portion and provides a magnetic field when the coil is energized. The magnetic metallic plate closes the opening portion of the body. The magnetic gasket is held between the body and the plate.
    Type: Grant
    Filed: September 14, 2006
    Date of Patent: June 30, 2009
    Assignee: DENSO CORPORATION
    Inventors: Naoki Mitsumata, Fumiaki Murakami
  • Patent number: 7441546
    Abstract: A pushrod is slidably received in a slidably holding guide, which is formed separately from a valve body of a valve apparatus. A clearance is provided between an inner peripheral surface of a small diameter tube portion of the valve body and an outer peripheral surface of the guide. The clearance is provided to absorb deformation of the small diameter tube portion.
    Type: Grant
    Filed: July 20, 2006
    Date of Patent: October 28, 2008
    Assignee: Denso Corporation
    Inventors: Naoki Mitsumata, Fumiaki Murakami
  • Publication number: 20070200655
    Abstract: An electromagnetic actuator includes a cylindrical coil, a stator core disposed in the cylindrical coil, a plate attached to one axial end of the stator core and an armature positioned to face the other axial end of the stator core. Upon energizing the coil, the armature is attracted to the stator core against a biasing force of a spring disposed in an inner space of the stator core. A depressed portion is formed on the plate and/or the stator core to suppress a magnetic flux passing therethrough and to reduce an amount of leakage flux. The magnetic flux generated by the coil is effectively used to drive the armature, and thereby a response time of the actuator is shortened. In other words, the armature is quickly driven upon energizing the coil.
    Type: Application
    Filed: December 5, 2006
    Publication date: August 30, 2007
    Applicant: DENSO CORPORATION
    Inventors: Fumiaki Murakami, Shigeru Nonoyama, Naoki Mitsumata
  • Publication number: 20070181840
    Abstract: A solenoid valve includes a coil, a stator core, a valve member, a coil spring, and a stopper. The coil provides a magnetic field when the coil is energized. The stator core includes a receiving bore, wherein the stator core generates a magnetic attractive force when the coil is energized. The valve member is attracted toward the stator core due to the magnetic attractive force generated by the stator core. The coil spring is received in the receiving bore of the stator core, wherein the coil spring biases the valve member in an opposite direction opposite from the stator core. The stopper positions the coil spring such that an outer peripheral surface of the coil spring is separated from an inner peripheral surface of the receiving bore.
    Type: Application
    Filed: February 7, 2007
    Publication date: August 9, 2007
    Applicant: DENSO CORPORATION
    Inventors: Naoki Mitsumata, Fumiaki Murakami, Shigeru Nonoyama
  • Publication number: 20070084443
    Abstract: An object of the invention is to provide a depressurizing valve mounted to a common rail for a fuel injection device, in which a direction of a connector for the depressurizing valve can be adjusted, without affecting an air gap and a sealing performance. The depressurizing valve has a valve unit and a coil unit which is detachably assembled to the valve unit by a mounting member, such as a retaining nut. A valve housing has an inside space, which is fluid tightly separated into first and second spaces by a connecting member, which is fluid tightly connected to the valve housing and a stator core. A valve body and a spring are arranged in the first space for closing a flow control port. A cylindrical coil is accommodated in the second space, such that the coil is rotatable with respect to the valve housing.
    Type: Application
    Filed: October 13, 2006
    Publication date: April 19, 2007
    Applicant: DENSO CORPORATION
    Inventors: Shigeru Nonoyama, Naoki Mitsumata, Fumiaki Murakami
  • Publication number: 20070057221
    Abstract: A solenoid drive apparatus for driving a driven member by a magnetic attractive force includes a tubular magnetic metallic body, a coil, a magnetic metallic plate, and a magnetic gasket. The tubular magnetic metallic body has an opening portion at one end. The coil is received in the body from the opening portion and provides a magnetic field when the coil is energized. The magnetic metallic plate closes the opening portion of the body. The magnetic gasket is held between the body and the plate.
    Type: Application
    Filed: September 14, 2006
    Publication date: March 15, 2007
    Applicant: DENSO CORPORATION
    Inventors: Naoki Mitsumata, Fumiaki Murakami
  • Publication number: 20070034819
    Abstract: A pushrod is slidably received in a slidably holding guide, which is formed separately from a valve body of a valve apparatus. A clearance is provided between an inner peripheral surface of a small diameter tube portion of the valve body and an outer peripheral surface of the guide. The clearance is provided to absorb deformation of the small diameter tube portion.
    Type: Application
    Filed: July 20, 2006
    Publication date: February 15, 2007
    Applicant: DENSO CORPORATION
    Inventors: Naoki Mitsumata, Fumiaki Murakami
  • Patent number: 6611103
    Abstract: An electron gun assembly for a CRT includes three cathode electrodes, a control electrode, an electron-stream extractor electrode, a focusing electrode, and an anode electrode. The electron-stream extractor electrode includes first, second, and third holes, each of which allows one of the three streams of the electrons to pass through. The focusing electrode includes a flat portion having fourth, fifth, and sixth holes, each of which allows one of the three streams of the electrons to pass through. The first, second, and third holes are arranged in the in-line direction. Each of the fourth and sixth holes includes a substantially rectangular opening and a substantially semicircular opening connected to each other. One side of the substantially rectangular opening is connected to a straight line segment of the substantially semicircular opening, and the substantially rectangular opening is disposed outside while the substantially semicircular opening is disposed inside.
    Type: Grant
    Filed: April 12, 2002
    Date of Patent: August 26, 2003
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Fumiaki Murakami
  • Publication number: 20030102796
    Abstract: In a cathode ray tube including a cathode and a first and a second electrodes provided with an electron passing aperture, in which the first and the second electrodes are disposed in front of and coaxially with the cathode so that electron beam from the cathode passes through the electron passing aperture, the cathode voltage at the cutoff operation is set up from 50 V to 80 V on the basis of the first electrode to thereby realize a high luminance.
    Type: Application
    Filed: September 25, 2002
    Publication date: June 5, 2003
    Inventors: Shuhei Nakata, Tetsuya Siroishi, Katsumi Oono, Fumiaki Murakami
  • Publication number: 20020195944
    Abstract: An electron gun assembly for a CRT includes three cathode electrodes, a control electrode, an electron-stream extractor electrode, a focusing electrode, and an anode electrode. The electron-stream extractor electrode includes first, second, and third holes, each of which allows one of the three streams of the electrons to pass through. The focusing electrode includes a flat portion having fourth, fifth, and sixth holes, each of which allows one of the three streams of the electrons to pass through. The first, second, and third holes are arranged in the in-line direction. Each of the fourth and sixth holes includes a substantially rectangular opening and a substantially semicircular opening connected to each other. One side of the substantially rectangular opening is connected to a straight line segment of the substantially semicircular opening, and the substantially rectangular opening is disposed outside while the substantially semicircular opening is disposed inside.
    Type: Application
    Filed: April 12, 2002
    Publication date: December 26, 2002
    Inventor: Fumiaki Murakami
  • Patent number: 5544538
    Abstract: A vehicular automatic transmission (AT) hydraulic controller has an integrated valve. The integrated valve has a cylindrical cam shaft including convex and concave parts on the outer periphery thereof, and the integrated valve is connected to a motor for automatic control and a connecting part which is interlocked with an external gearshift operated by a driver. Hydraulic control of the integrated valve can be performed in two different ways, i.e., automatic control and manual control, and even if automatic control malfunctions due to an error, manual control can maintain the control of the AT and avoid any inconvenience. The structure of this integrated valve provides a high degree of design freedom and can implement a wide variety of AT functions. Accordingly, a light, compact and reliable AT equipped with both an automatic control mechanism and a manual control mechanism can be provided.
    Type: Grant
    Filed: June 3, 1994
    Date of Patent: August 13, 1996
    Assignee: Nippondenso Co., Ltd.
    Inventors: Akira Takagi, Fumiaki Murakami, Masami Fujutsuna, Kazuyuki Natsume, Masaru Suzuki, Toshihiro Takei
  • Patent number: 5523178
    Abstract: This invention provides a chemical cell equipped with a safety mechanism which can restrict an abnormal reaction of a cell and can prevent in advance gas explosion, etc., of the cell. The chemical cell 4010 comprises a cell reaction portion 4015, a positive pole terminal 4016 and a cell case 4041 functioning also as a negative pole terminal. A driving member 4021 responsive to a gas pressure or reaction heat at the time of the abnormal reaction includes a retention mechanism 4025 having a flexible member 4251 which cuts off a current and maintains this state. It also includes a gas discharge member. The driving member 4021 preferably short-circuits the positive pole terminal 4016 and the cell case 41 after the current is cut off, and preferably includes a valve member 4301 for closing a gas passage 4047 again after the gas is discharged (see FIG. 40 ).
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: June 4, 1996
    Assignee: Nippondenso Co., Ltd.
    Inventors: Fumiaki Murakami, Tetsuya Nagata, Hiroshi Tamura, Masanori Tabayashi, Tomoyasu Takeuchi
  • Patent number: 5355714
    Abstract: A pressure sensor includes a diaphragm having a magnetic film fixed to one side thereof. The diaphragm is arranged to displace depending on a pressure differential applied thereacross to change an inductance of a coil which is arranged close to the magnetic film with a predetermined gap therebetween. An alternating current is supplied to the coil to be modulated by the inductance of the coil so that the pressure differential across the diaphragm is converted into an electric signal. A monitored pressure is derived based on this converted electric signal.
    Type: Grant
    Filed: February 25, 1993
    Date of Patent: October 18, 1994
    Assignee: Nippondenso Co., Ltd.
    Inventors: Masaru Suzuki, Fumiaki Murakami, Yoshihisa Nakano, Hideki Miyazawa