Patents by Inventor Tadashi Fukushima

Tadashi Fukushima 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).

  • Publication number: 20220299065
    Abstract: A clamper mechanism for a motion guide device includes a clamper block having tapered faces, clamper rolling elements arranged between the tapered faces and both left and right side faces of a track member, and a clamper rolling element holder attached to the clamper block with an interposition of an elastic member. When an elastic force exerted by the elastic member acts in a direction in which the clamper block and the clamper rolling element holder are separated from each other, the clamper rolling elements bite the tapered faces to bring the clamper block into a state restrained to the track member. When an external force against the elastic force exerted by the elastic member acts, the clamper rolling elements are brought into a free state within the tapered faces to bring the clamper block into a state not restrained to the track member to exert a stable clamping force.
    Type: Application
    Filed: April 28, 2020
    Publication date: September 22, 2022
    Applicant: THK CO., LTD.
    Inventors: Yoshinori Murakami, Reiji Abe, Tadashi Matsuhira, Yoshiro Oishi, Hiroaki Mochizuki, Hajime Fukushima, Hiroomi Kuribayashi, Akito Kaneko
  • Patent number: 9226631
    Abstract: A cyclonic separator and a vacuum cleaner which efficiently separates dust, collect the dust without re-scattering it and make low noise are provided. In a primary cyclone portion 10, a primary swirl chamber 12 swirls air containing dust sucked from a primary inlet 11, and thereby, separates a first dust and a second dust from the air containing dust to collect them respectively in a zero-order dust case 114 which is provided at a side of the primary swirl chamber 12 and communicates with a zero-order opening portion 113 provided at a side wall, and a primary dust case 14 provided at a lower side of the primary swirl chamber 12.
    Type: Grant
    Filed: February 3, 2011
    Date of Patent: January 5, 2016
    Assignee: Mitsubishi Electric Corporation
    Inventors: Sota Komae, Tsuyoshi Maeda, Junichiro Hoshizaki, Tomoo Kobayashi, Akihiro Iwahara, Masayoshi Izuka, Tadashi Fukushima, Kenji Yanagisawa, Daisuke Kondo
  • Patent number: 9186029
    Abstract: A cyclonic separator and a vacuum cleaner which efficiently separates dust, collect the dust without re-scattering it and make low noise are provided. In a primary cyclone portion 10, a primary swirl chamber 12 swirls air containing dust sucked from a primary inlet 11, and thereby, separates a first dust and a second dust from the air containing dust to collect them respectively in a zero-order dust case 114 which is provided at a side of the primary swirl chamber 12 and communicates with a zero-order opening portion 113 provided at a side wall, and a primary dust case 14 provided at a lower side of the primary swirl chamber 12.
    Type: Grant
    Filed: February 3, 2011
    Date of Patent: November 17, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Sota Komae, Tsuyoshi Maeda, Junichiro Hoshizaki, Tomoo Kobayashi, Akihiro Iwahara, Masayoshi Izuka, Tadashi Fukushima, Kenji Yanagisawa, Daisuke Kondo
  • Publication number: 20130025086
    Abstract: A cyclonic separator and a vacuum cleaner which efficiently separates dust, collect the dust without re-scattering it and make low noise are provided. In a primary cyclone portion 10, a primary swirl chamber 12 swirls air containing dust sucked from a primary inlet 11, and thereby, separates a first dust and a second dust from the air containing dust to collect them respectively in a zero-order dust case 114 which is provided at a side of the primary swirl chamber 12 and communicates with a zero-order opening portion 113 provided at a side wall, and a primary dust case 14 provided at a lower side of the primary swirl chamber 12.
    Type: Application
    Filed: February 3, 2011
    Publication date: January 31, 2013
    Applicant: Mitsubishi Electric Corporation
    Inventors: Sota Komae, Tsuyoshi Maeda, Junichiro Hoshizaki, Tomoo Kobayashi, Akihiro Iwahara, Masayoshi Izuka, Tadashi Fukushima, Kenji Yanagisawa, Daisuke Kondo
  • Patent number: 7779532
    Abstract: A manufacturing method of a hybrid permanent magnet type electric rotating machine including a stator that is constructed by winding excitation coils around respective main poles. A rotor is constructed by fixing a first rotor unit, which consists of a pair of rotor cores and a magnetic material sandwiched between the rotor cores, and a second rotor unit, which has the same construction as the first rotor unit, to a rotation shaft. The rotor is assembled to the stator to form an assembled body. The magnet material of the first rotor unit is magnetized in the axial direction by a magnetizing flux passing through a half of the assembled body in the axial direction. The magnet material of the second rotor unit is magnetized in the axial direction in an opposite polarity by a magnetizing flux passing through the remaining half of the assembled body in the axial direction.
    Type: Grant
    Filed: February 22, 2007
    Date of Patent: August 24, 2010
    Assignee: Nidec Servo Corporation
    Inventors: Masafumi Sakamoto, Toru Kobayashi, Masahiko Azegami, Yasuaki Motegi, Takaya Kato, Shoji Oiwa, Yasuo Matsuda, Kazuo Onishi, Tadashi Fukushima, Norimoto Tanaka
  • Patent number: 7754074
    Abstract: A filtering apparatus having a vessel and a filter made from fluororesin and treated before filtering operation by at least one of adding thermal treatment in gas or liquid and penetrating with fluid composed of hot water or steam at a temperature of less than melting point of the fluororesin.
    Type: Grant
    Filed: July 16, 2008
    Date of Patent: July 13, 2010
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Makoto Fujie, Hideki Nakamura, Kazuya Yamada, Shuji Seki, Manabu Sakurai, Tadashi Fukushima, Kenichiro Ide, Tetsuya Noda, Masaru Komatsubara
  • Patent number: 7589440
    Abstract: A stepping motor includes: a stator having main magnetic poles each having small stator teeth on its tip, a core-back portion that connects outer portions of the poles, and windings wound around the poles; and two sets of rotor units that are arranged in an axial direction and face the stator with an air gap therebetween. Each rotor unit consists of two rotor cores that are separated in the axial direction and a magnet sandwiched thereby and magnetized in the axial direction. Each rotor core has small rotor teeth around its outer surface. The rotor cores of each rotor unit are deviated by ½ pitch of the small rotor teeth, and the two rotor units are arranged to make the magnetic polarities of the small rotor teeth of the adjacent two rotor cores identical. A magnet thickness Tm and a rotor core thickness Tc satisfy 0.25?Tm/Tc?0.45.
    Type: Grant
    Filed: November 22, 2006
    Date of Patent: September 15, 2009
    Assignee: Nidec Servo Corporation
    Inventors: Shoji Oiwa, Masafumi Sakamoto, Toru Kobayashi, Masahiko Azegami, Yasuaki Motegi, Takaya Kato, Yasuo Matsuda, Kazuo Onishi, Naoyuki Kanamori, Tadashi Fukushima
  • Publication number: 20090210411
    Abstract: A user speech analyzing component poses, to a user, question sentences for respective ones of a plurality of attributes, and analyzes an attribute value for each of the attributes from an answer sentence from the user to the sentence question. A user data holding component, as a result of analysis, holds user data that allows the plurality of attributes, and respective user attribute values for the attributes to correspond to one another. A matching component, when an acquisition ratio of the attribute values from the user with respect to all of the attributes is a predetermined value or greater, selects at least one target data candidate that matches each of the attributes and each of the attribute values of the user data, from a plurality of target data. A dialogue control component outputs each of the target data candidates selected, to the user's side.
    Type: Application
    Filed: November 19, 2008
    Publication date: August 20, 2009
    Applicant: OKI ELECTRIC INDUSTRY CO., LTD.
    Inventors: Toshiki Murata, Mihoko Kitamura, Tatsuya Sukehiro, Takeshi Yamamoto, Tadashi Fukushima, Sayori Shimohata, Atsushi Ikeno
  • Publication number: 20090151355
    Abstract: A filtering apparatus having a vessel and a filter made from fluororesin and treated before filtering operation by at least one of adding thermal treatment in gas or liquid and penetrating with fluid composed of hot water or steam at a temperature of less than melting point of the fluororesin.
    Type: Application
    Filed: July 16, 2008
    Publication date: June 18, 2009
    Inventors: Makoto FUJIE, Hideki Nakamura, Kazuya Yamada, Shuji Seki, Manabu Sakurai, Tadashi Fukushima, Kenichiro Ide, Tetsuya Noda, Masaru Komatsubara
  • Publication number: 20080223043
    Abstract: A filtering apparatus having a vessel and a filter made from fluororesin and treated before filtering operation by at least one of adding thermal treatment in gas or liquid and penetrating with fluid composed of hot water or steam at a temperature of less than melting point of the fluororesin.
    Type: Application
    Filed: December 12, 2007
    Publication date: September 18, 2008
    Inventors: Makoto FUJIE, Hideki Nakamura, Kazuya Yamada, Shuji Seki, Manabu Sakurai, Tadashi Fukushima, Kenichiro Ide, Tetsuya Noda, Masaru Komatsubara
  • Patent number: 7309424
    Abstract: A filtering apparatus having a vessel and a filter made from fluororesin and treated before filtering operation by at least one of adding thermal treatment in gas or liquid and penetrating with fluid composed of hot water or steam at a temperature of less than melting point of the fluororesin.
    Type: Grant
    Filed: July 18, 2005
    Date of Patent: December 18, 2007
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Makoto Fujie, Hideki Nakamura, Kazuya Yamada, Shuji Seki, Manabu Sakurai, Tadashi Fukushima, Kenichiro Ide, Tetsuya Noda, Masaru Komatsubara
  • Publication number: 20070200464
    Abstract: A stator is constructed by winding excitation coils around respective main poles. A rotor is constructed by fixing a first rotor unit, which consists of a pair of rotor cores and a magnetic material sandwiched between the rotor cores, and a second rotor unit, which has the same construction as the first rotor unit, to a rotation shaft. The rotor is assembled to the stator to form an assembled body. The magnet material of the first rotor unit is magnetized in the axial direction by a magnetizing flux passing through a half of the assembled body in the axial direction. The magnet material of the second rotor unit is magnetized in the axial direction in an opposite polarity by a magnetizing flux passing through the remaining half of the assembled body in the axial direction.
    Type: Application
    Filed: February 22, 2007
    Publication date: August 30, 2007
    Applicant: JAPAN SERVO CO., LTD.
    Inventors: Masafumi Sakamoto, Toru Kobayashi, Masahiko Azegami, Yasuaki Motegi, Takaya Kato, Shoji Oiwa, Yasuo Matsuda, Kazuo Onishi, Tadashi Fukushima, Norimoto Tanaka
  • Publication number: 20070120426
    Abstract: A stepping motor includes: a stator having main magnetic poles each having small stator teeth on its tip, a core-back portion that connects outer portions of the poles, and windings wound around the poles; and two sets of rotor units that are arranged in an axial direction and face the stator with an air gap therebetween. Each rotor unit consists of two rotor cores that are separated in the axial direction and a magnet sandwiched thereby and magnetized in the axial direction. Each rotor core has small rotor teeth around its outer surface. The rotor cores of each rotor unit are deviated by ½ pitch of the small rotor teeth, and the two rotor units are arranged to make the magnetic polarities of the small rotor teeth of the adjacent two rotor cores identical. A magnet thickness Tm and a rotor core thickness Tc satisfy 0.25?Tm/Tc?0.45.
    Type: Application
    Filed: November 22, 2006
    Publication date: May 31, 2007
    Applicant: JAPAN SERVO CO., LTD.
    Inventors: Shoji Oiwa, Masafumi Sakamoto, Toru Kobayashi, Masahiko Azegami, Yasuaki Motegi, Takaya Kato, Yasuo Matsuda, Kazuo Onishi, Yuji Enomoto, Naoyuki Kanamori, Tadashi Fukushima
  • Publication number: 20060054541
    Abstract: A filtering apparatus having a vessel and a filter made from fluororesin and treated before filtering operation by at least one of adding thermal treatment in gas or liquid and penetrating with fluid composed of hot water or steam at a temperature of less than melting point of the fluororesin.
    Type: Application
    Filed: July 18, 2005
    Publication date: March 16, 2006
    Inventors: Makoto Fujie, Hideki Nakamura, Kazuya Yamada, Shuji Seki, Manabu Sakurai, Tadashi Fukushima, Kenichiro Ide, Tetsuya Noda, Masaru Komatsubara
  • Publication number: 20040174372
    Abstract: A microprocessor for processing a large quantity of graphics data. The microprocessor independent of a CPU has two ports, and performs an instruction fetch and a data access or a memory access simultaneously to two memories mounted on separate buses. A graphics processing apparatus provided by the microprocessor transfers graphics data between a system memory and a frame memory at high speeds.
    Type: Application
    Filed: March 12, 2004
    Publication date: September 9, 2004
    Inventors: Hiromichi Yamada, Tadashi Fukushima, Shigeru Matsuo, Takashi Miyamoto, Tooru Komagawa, Syoji Yoshida
  • Patent number: 6727903
    Abstract: A microprocessor suitable for processing a large quantity of graphics data. Graphics processing apparatus and method using the microprocessor are also disclosed. The microprocessor independent of a CPU has two ports, and performs an instruction fetch and a data access or a memory access simultaneously to two memories mounted on separate buses. In the graphics processing apparatus in which this microprocessor is employed, the graphics transfer between a system memory and a frame memory can be performed at higher speed.
    Type: Grant
    Filed: October 8, 1999
    Date of Patent: April 27, 2004
    Assignee: Hitachi, Ltd.
    Inventors: Hiromichi Yamada, Tadashi Fukushima, Shigeru Matsuo, Takashi Miyamoto, Tooru Komagawa, Syoji Yoshida
  • Publication number: 20030057785
    Abstract: A permanent magnet rotating electric machine includes a stator having a plurality of teeth formed in a stator core, concentrated wound armature windings wound around the plurality of teeth, and a rotor having a plurality of holes formed in a rotor core for accommodating permanent magnets. Permanent magnets are inserted into the plurality of holes of the rotor. The permanent magnets are each formed or arranged as a convex “V” and “U” with respect to the shaft of the rotor.
    Type: Application
    Filed: July 24, 2002
    Publication date: March 27, 2003
    Inventors: Haruo Koharagi, Masaharu Senoh, Keiji Noma, Kohei Ishii, Kazuo Sato, Satoshi Kikuchi, Miyoshi Takahashi, Kouki Yamamoto, Tadashi Fukushima
  • Publication number: 20020139738
    Abstract: A filtering apparatus having a vessel and a filter made from fluororesin and treated before filtering operation by at least one of adding thermal treatment in gas or liquid and penetrating with fluid composed of hot water or steam at a temperature of less than melting point of the fluororesin.
    Type: Application
    Filed: January 31, 2002
    Publication date: October 3, 2002
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Makoto Fujie, Hideki Nakamura, Kazuya Yamada, Shuji Seki, Manabu Sakurai, Tadashi Fukushima, Kenichiro Ide, Tetsuya Noda, Masaru Komatsubara
  • Patent number: 6441525
    Abstract: The present invention provides a permanent magnet rotating electric machine that comprises a stator, into which concentrated wound armature windings are inserted in such a way as to surround a plurality of teeth formed in a stator core, and a rotor having rare earth permanent magnets inserted into a plurality of permanent magnet holes, which are formed in a rotor core and used for accommodating permanent magnets. In this permanent magnet rotating electric machine, the permanent magnets are each shaped like a convex “V” or “U” with respect to the shaft of the rotor. Moreover, a ratio of the width W1 of an interpole core between the permanent magnets to the width Xg of the gap between the stator core and the rotor core is set in such a manner as to satisfy the following condition: 0.8≦W1/Xg≦13.2. Thus, even when this rotating electric machine is driven by a position sensorless inverter in the case of 120 degree energization, the system efficiency is enhanced.
    Type: Grant
    Filed: February 27, 2001
    Date of Patent: August 27, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Haruo Koharagi, Masaharu Senoh, Keiji Noma, Kohei Ishii, Kazuo Sato, Satoshi Kikuchi, Miyoshi Takahashi, Kouki Yamamoto, Tadashi Fukushima
  • Patent number: 6397611
    Abstract: A circuit for controlling the outdoor unit of an air conditioner comprises a microcomputer which controls two brushless motors and a microcomputer which controls the whole outdoor unit. In accordance with the present invention, separation of a function for controlling the brushless motors from a function for controlling the whole outdoor unit can simplify software for said microcomputers.
    Type: Grant
    Filed: June 2, 2000
    Date of Patent: June 4, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Ikuo Yamato, Yasuo Notohara, Akihiro Tanba, Tadashi Fukushima