Patents by Inventor Ken Okumura

Ken Okumura 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: 10097130
    Abstract: An energization control system includes a sensor unit including a magnetic detection portion detecting a magnetic flux density of a magnetic flux generated at a surrounding of a conductor in response to a current flowing in the conductor of an electrical apparatus, a temperature detection portion detecting a temperature level within a package in which the magnetic detection portion is disposed, a correction portion correcting a temperature characteristic of a detection result of the magnetic detection portion based on the detected temperature level, and an output portion outputting temperature information indicating the detected temperature level. The energization control system further includes a control unit including a control portion controlling a current flowing in a heating element of the electrical apparatus based on the temperature information.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: October 9, 2018
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Mamoru Tsuda, Ken Okumura, Hiromu Kinoshita
  • Publication number: 20170370968
    Abstract: A current sensor includes: six or more bus bars; a core made of a magnetic material and having a base portion and seven or more arm portions which extend in a vertical direction from the base portion and are spaced apart from each other, and in which each of the bus bars is inserted into a gap formed between adjacent arm portions; and a main body configured to integrally hold the bus bars and the core in a state in which the bus bars and the core are insert-molded using polyphenylene sulfide (PPS) or polyphthalamide (PPA).
    Type: Application
    Filed: June 14, 2017
    Publication date: December 28, 2017
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Ken OKUMURA, Mamoru Tsuda
  • Publication number: 20170163204
    Abstract: An energization control system includes a sensor unit including a magnetic detection portion detecting a magnetic flux density of a magnetic flux generated at a surrounding of a conductor in response to a current flowing in the conductor of an electrical apparatus, a temperature detection portion detecting a temperature level within a package in which the magnetic detection portion is disposed, a correction portion correcting a temperature characteristic of a detection result of the magnetic detection portion based on the detected temperature level, and an output portion outputting temperature information indicating the detected temperature level. The energization control system further includes a control unit including a control portion controlling a current flowing in a heating element of the electrical apparatus based on the temperature information.
    Type: Application
    Filed: November 30, 2016
    Publication date: June 8, 2017
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Mamoru TSUDA, Ken OKUMURA, Hiromu KINOSHITA
  • Patent number: 9310394
    Abstract: A current sensor includes: a housing that holds a busbar to which a current is applied and a core arranged around the busbar; a circuit board fixed to the housing in the state of being arranged to face the housing; and a detection element for detecting the current; wherein the detection element has an element main body held in the housing and plural connection terminals fixed in through-holes in the circuit board, and a plate-like member provided with guide holes in which the connection terminals are inserted and which have a diameter reduced from the side of the housing toward the side of the circuit board is provided on a surface facing the housing, of two surfaces of the circuit board.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: April 12, 2016
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Ken Okumura, Shigeki Niimi, Kenichi Taguchi, Akira Kamiya, Takashi Kurozumi, Kimihiro Tamura, Katsuki Kataoka
  • Patent number: 9164132
    Abstract: A current sensor includes: a core formed by U-shaped flat plates made of a magnetic body and stacked together; a flat plate-like conductor which is inserted on an interior side of a U-groove of the core and through which a current to be measured flows; a detection element which is arranged on the side of an opening of the U-groove in such a way that a detecting direction extends in a spacing direction of the opening, and which detects a strength of a magnetic field; a housing which supports the core, the conductor and the detection element; and a pair of spacing direction supporting portions which are provided at positions along the spacing direction on both sides of the detection element, in an opening-side end of the core, and which abut on the housing.
    Type: Grant
    Filed: December 5, 2013
    Date of Patent: October 20, 2015
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Ken Okumura, Shigeki Niimi, Kenichi Taguch, Akira Kamiya
  • Patent number: 9069016
    Abstract: A current sensor includes at least three bus bars made of flat-plate-shaped conductors and an inverter, a plurality of cores in which a core is formed by stacking flat plates made of U-shaped magnetic bodies, and a detecting element arranged on the side of an opening portion of each of the cores for detecting the intensity of a magnetic field. An interval between the core and another bus bar that is adjacent to the bus bar inserted into the U groove of the core is ½ of the length of the opening portion in the spacing direction, and the tolerance of the gap is set to a value obtained by subtracting the value of 3/2 of the length of the opening portion in the spacing direction from the value of the interval between the bus bars that are adjacent to each other, with the gap as a median value.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: June 30, 2015
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Akihiro Yasui, Manabu Kato, Eiichiro Iwase, Ken Okumura, Akira Kamiya
  • Publication number: 20140176123
    Abstract: A current sensor includes: a core formed by U-shaped flat plates made of a magnetic body and stacked together; a flat plate-like conductor which is inserted on an interior side of a U-groove of the core and through which a current to be measured flows; a detection element which is arranged on the side of an opening of the U-groove in such a way that a detecting direction extends in a spacing direction of the opening, and which detects a strength of a magnetic field; a housing which supports the core, the conductor and the detection element; and a pair of spacing direction supporting portions which are provided at positions along the spacing direction on both sides of the detection element, in an opening-side end of the core, and which abut on the housing.
    Type: Application
    Filed: December 5, 2013
    Publication date: June 26, 2014
    Applicant: Aisin Seiki Kabushiki Kaisha
    Inventors: Ken OKUMURA, Shigeki NIIMI, Kenichi TAGUCH, Akira KAMIYA
  • Publication number: 20140176124
    Abstract: A current sensor includes: a housing that holds a busbar to which a current is applied and a core arranged around the busbar; a circuit board fixed to the housing in the state of being arranged to face the housing; and a detection element for detecting the current; wherein the detection element has an element main body held in the housing and plural connection terminals fixed in through-holes in the circuit board, and a plate-like member provided with guide holes in which the connection terminals are inserted and which have a diameter reduced from the side of the housing toward the side of the circuit board is provided on a surface facing the housing, of two surfaces of the circuit board.
    Type: Application
    Filed: December 6, 2013
    Publication date: June 26, 2014
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Ken OKUMURA, Shigeki NIIMI, Kenichi TAGUCHI, Akira KAMIYA, Takashi KUROZUMI, Kimihiro TAMURA, Katsuki KATAOKA
  • Patent number: 5817940
    Abstract: An angular rate detector is disclosed having a first and a second detecting electrode 6a, 7a, which detect a second oscillation produced by Coriolis force, and disposed at locations which are symmetrical with respect to a direction of excitation D2 of a piezoelectric oscillator 2 and which corresponds to nodes of a first oscillation produced by the excitation. When the piezoelectric oscillator 2 rotates in a certain direction, a first signal appearing at the first detecting electrode 6a will be lagging in phase while a second signal appearing at the second detecting electrode 7a will be leading in phase. An electrical circuit produces an angular rate signal which represents a phase difference between the first and the second signal.
    Type: Grant
    Filed: March 12, 1997
    Date of Patent: October 6, 1998
    Assignee: Aisin Seiki Kabishiki Kaisha
    Inventors: Toshihiro Kobayashi, Ken Okumura, Katsuyoshi Mizumoto, Isao Hagiwara
  • Patent number: 5536744
    Abstract: This invention offers the compounds which exhibit a coronary blood vessel dilating action which is long-acting.(Constitution)Novel imidazolinoxyl derivatives represented by a general formula (1). A compound A in which R is COOH is given in an example. ##STR1## (Merit) The compounds of the present invention can be directly administered, after diluting to a suitable concentration with a phosphate buffer or the like, to blood vessel which is required to be relaxed and dilated whereby a significant and long-acting relaxing action is resulted though, in a blood flow, they are quickly inactivated and excreted and no side effect is noted.
    Type: Grant
    Filed: December 23, 1994
    Date of Patent: July 16, 1996
    Assignee: Dojindo Laboratories
    Inventors: Ken Okumura, Ryusuke Tsunoda, Hiroshi Maeda, Takaaki Akaike, Keizo Sato, Kazumi Sasamoto, Yoshiki Katayama