Patents by Inventor Masaya Sakai

Masaya Sakai 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: 11973002
    Abstract: A composite substrate includes, in this order: a ceramic plate; a metal layer containing at least one selected from the group consisting of aluminum and an aluminum alloy; and a thermal sprayed layer containing at least one selected from the group consisting of copper and a copper alloy, and an intermetallic compound containing copper and aluminum as constituent elements is scattered between the metal layer and the thermal sprayed layer.
    Type: Grant
    Filed: November 12, 2020
    Date of Patent: April 30, 2024
    Assignee: Denka Company Limited
    Inventors: Atsushi Sakai, Masaya Yumiba, Kentaro Nakayama, Yoshitaka Taniguchi
  • Patent number: 9800196
    Abstract: A control apparatus for an AC rotary machine includes voltage application units 3, 4 for applying voltages respectively to two sets of three-phase windings of AC rotary machine 1, control unit 5 that controls the voltage application units 3, 4, and fault detection units 6, 7 that output fault detection signals to control unit 5 varying in accordance with the ground short fault and the power short fault. When detecting, control unit 5 outputs a voltage command to faulty voltage application unit 3, 4 to set voltages of respective phases of the three-phase windings at a negative electrode side potential V? of DC power supply 2, and when detecting a power short fault, control unit 5 outputs a voltage command to set the voltages of the respective phases of the three-phase windings at a positive electrode side potential V+ of DC power supply 2.
    Type: Grant
    Filed: April 23, 2014
    Date of Patent: October 24, 2017
    Assignee: Mitsubishi Electric Corporation
    Inventors: Tatsuya Mori, Isao Kezobo, Yoshihiko Kimpara, Masaya Sakai, Akira Furukawa, Yu Kawano, Rei Araki
  • Publication number: 20160373050
    Abstract: A control apparatus for an AC rotary machine includes voltage application units 3, 4 for applying voltages respectively to two sets of three-phase windings of AC rotary machine 1, control unit 5 that controls the voltage application units 3, 4, and fault detection units 6, 7 that output fault detection signals to control unit 5 varying in accordance with the ground short fault and the power short fault. When detecting, control unit 5 outputs a voltage command to faulty voltage application unit 3, 4 to set voltages of respective phases of the three-phase windings at a negative electrode side potential V? of DC power supply 2, and when detecting a power short fault, control unit 5 outputs a voltage command to set the voltages of the respective phases of the three-phase windings at a positive electrode side potential V+ of DC power supply 2.
    Type: Application
    Filed: April 23, 2014
    Publication date: December 22, 2016
    Applicant: Mitsubishi Electric Corporation
    Inventors: Tatsuya MORI, Isao KEZOBO, Yoshihiko KIMPARA, Masaya SAKAI, Akira FURUKAWA, Yu KAWANO, Rei ARAKI
  • Publication number: 20160275992
    Abstract: An information processing apparatus according to an embodiment includes an extraction unit, an analysis unit, and a display processing unit. The extraction unit detects switching between scenes in a video content and extracts images of the respective scenes from the video content. The analysis unit analyzes temporal transition of acoustic information contained in the video content. The display processing unit displays a list of the images of the respective scenes extracted by the extraction unit and an image indicating the temporal transition of acoustic information analyzed by the analysis unit on a display unit.
    Type: Application
    Filed: February 10, 2016
    Publication date: September 22, 2016
    Applicant: YAHOO JAPAN CORPORATION
    Inventors: Masaya SAKAI, Masaki NOGUCHI, Naoaki YAMASHITA, Yasuaki HASHIMOTO, Shingo HOSHINO, Ryusuke ETCHU, Shigenori KAMATA, Mikiko HIRANO
  • Patent number: 9114955
    Abstract: Provided is a control device for an elevator to be operated with a speed pattern thereof being changed based on a load of the elevator, in which a control parameter is automatically adjusted in a short period so that the capability of a drive device is appropriately exhibited regardless of the magnitudes of travel resistance and mechanical loss that varies for each elevator, and consequently the elevator is operated with high efficiency, the control device including: a traveling model used for calculating the speed command value of the elevator; and means for automatically adjusting a parameter of the traveling model based on travel data during a travel of the elevator when the elevator is installed and adjusted.
    Type: Grant
    Filed: December 8, 2010
    Date of Patent: August 25, 2015
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Masaya Sakai
  • Publication number: 20130018639
    Abstract: Provided is a control device for an elevator to be operated with a speed pattern thereof being changed based on a load of the elevator, in which a control parameter is automatically adjusted in a short period so that the capability of a drive device is appropriately exhibited regardless of the magnitudes of travel resistance and mechanical loss that varies for each elevator, and consequently the elevator is operated with high efficiency, the control device including: a traveling model used for calculating the speed command value of the elevator; and means for automatically adjusting a parameter of the traveling model based on travel data during a travel of the elevator when the elevator is installed and adjusted.
    Type: Application
    Filed: December 8, 2010
    Publication date: January 17, 2013
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Masaya Sakai
  • Patent number: 7931128
    Abstract: In an elevator device, a drive unit has a drive sheave, a motor for rotating the drive sheave, and a motor driving portion for driving the motor. The motor driving portion is controlled by a control unit. When a car is running, the control unit monitors a load on at least one component within the drive unit, and generates a control command regarding a running speed of the car in accordance with a state of the load, and outputs the control command to the motor driving portion.
    Type: Grant
    Filed: July 25, 2006
    Date of Patent: April 26, 2011
    Assignee: Mitsubishi Electric Corporation
    Inventors: Masaya Sakai, Takaharu Ueda
  • Patent number: 7837012
    Abstract: The present invention provides an elevator controller including: a main control unit for controlling running of an elevator, in which the main control unit predictively calculates a continuous temperature state of a predetermined componential equipment of the elevator and performs an operation control of the elevator based on the predicted temperature state such that the componential equipment is not overloaded. Accordingly, a temperature rise in the componential equipment is suppressed, thereby enabling to prevent the elevator from becoming inoperable.
    Type: Grant
    Filed: September 29, 2003
    Date of Patent: November 23, 2010
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Masaya Sakai, Takaharu Ueda
  • Patent number: 7823705
    Abstract: An elevator apparatus is equipped with an elevator component that is operated during operation of an elevator, a detector for measuring a change in a physical quantity other than temperature as to the elevator component, and a control device for controlling the operation of the elevator based on information from the detector. The elevator component is, for example, a hoisting machine for moving a car of the elevator. The hoisting machine has a motor, and a driving sheave that is rotated by the motor. The detector measures a strain of a frame of the motor as the physical quantity other than temperature. The control device determines based on the strain of the frame of the motor whether or not there is an abnormality in the operation of the elevator, and controls the operation of the elevator. It is therefore possible to determine easily and more reliably whether or not there is an abnormality in the operation of the elevator, without the need to directly measure the temperature of the motor (6).
    Type: Grant
    Filed: September 30, 2005
    Date of Patent: November 2, 2010
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takaharu Ueda, Masaya Sakai, Takashi Yumura
  • Patent number: 7748502
    Abstract: In an elevator apparatus, a single car is raised and lowered by a plurality of hoisting machines. An elevator control device for controlling the hoisting machines generates speed commands separately for the hoisting machines. When a current value of one of the hoisting machines reaches a current set value, which is set in advance during acceleration of the car, the elevator control device applies the speed command for that one of the hoisting machines, whose current value has reached the current set value, to the other hoisting machine as well.
    Type: Grant
    Filed: April 13, 2006
    Date of Patent: July 6, 2010
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takaharu Ueda, Masunori Shibata, Masaya Sakai
  • Publication number: 20090283367
    Abstract: In an elevator apparatus, a single car is raised and lowered by a plurality of hoisting machines. An elevator control device for controlling the hoisting machines generates speed commands separately for the hoisting machines. When a current value of one of the hoisting machines reaches a current set value, which is set in advance during acceleration of the car, the elevator control device applies the speed command for that one of the hoisting machines, whose current value has reached the current set value, to the other hoisting machine as well.
    Type: Application
    Filed: April 13, 2006
    Publication date: November 19, 2009
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventors: Takaharu Ueda, Masunori Shibata, Masaya Sakai
  • Publication number: 20090236184
    Abstract: An elevator apparatus is equipped with an elevator component that is operated during operation of an elevator, a detector for measuring a change in a physical quantity other than temperature as to the elevator component, and a control device for controlling the operation of the elevator based on information from the detector. The elevator component is, for example, a hoisting machine for moving a car of the elevator. The hoisting machine has a motor, and a driving sheave that is rotated by the motor. The detector measures a strain of a frame of the motor as the physical quantity other than temperature. The control device determines based on the strain of the frame of the motor whether or not there is an abnormality in the operation of the elevator, and controls the operation of the elevator. It is therefore possible to determine easily and more reliably whether or not there is an abnormality in the operation of the elevator, without the need to directly measure the temperature of the motor (6).
    Type: Application
    Filed: September 30, 2005
    Publication date: September 24, 2009
    Applicant: Mitsubishi Electric Corporation
    Inventors: Takaharu Ueda, Masaya Sakai, Takashi Yumura
  • Patent number: 7588125
    Abstract: An elevator control device that drives a cage in a high-efficient speed pattern without using a load detector such as a conventional scale device. The elevator control device includes: a current detector for detecting a current that is supplied to a motor from an inverter; a speed detector for detecting a rotation speed of the motor; a speed pattern generator for generating an elevator speed pattern; a motor speed control device for controlling the speed so that a speed detection value follows a speed command value of the speed pattern; and a motor current control device for controlling a current that is supplied to the motor with respect to the inverter by using a current detection value and the speed detection value on the basis of the speed command value.
    Type: Grant
    Filed: November 14, 2005
    Date of Patent: September 15, 2009
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takaharu Ueda, Masaya Sakai, Masunori Shibata
  • Publication number: 20080315802
    Abstract: An elevator control device that drives a cage in a high-efficient speed pattern without using a load detector such as a conventional scale device. The elevator control device includes: a current detector for detecting a current that is supplied to a motor from an inverter; a speed detector for detecting a rotation speed of the motor; a speed pattern generator for generating an elevator speed pattern a motor speed control device for controlling the speed so that a speed detection value follows a speed command value of the speed pattern; and a motor current control device for controlling a current that is supplied to the motor with respect to the inverter by using a current detection value and the speed detection value on the basis of the speed command value.
    Type: Application
    Filed: November 14, 2005
    Publication date: December 25, 2008
    Applicant: Mitsubishi Electric Corporation
    Inventors: Takaharu Ueda, Masaya Sakai, Masunori Shibata
  • Publication number: 20070284196
    Abstract: In an elevator device, a drive unit has a drive sheave, a motor for rotating the drive sheave, and a motor driving portion for driving the motor. The motor driving portion is controlled by a control unit. When a car is running, the control unit monitors a load on at least one component within the drive unit, and generates a control command regarding a running speed of the car in accordance with a state of the load, and outputs the control command to the motor driving portion.
    Type: Application
    Filed: July 25, 2006
    Publication date: December 13, 2007
    Applicant: Mitsubishi Electric Corporation
    Inventors: Masaya Sakai, Takaharu Ueda
  • Publication number: 20070012521
    Abstract: The present invention provides an elevator controller including: a main control unit for controlling running of an elevator, in which the main control unit predictively calculates a continuous temperature state of a predetermined componential equipment of the elevator and performs an operation control of the elevator based on the predicted temperature state such that the componential equipment is not overloaded. Accordingly, a temperature rise in the componential equipment is suppressed, thereby enabling to prevent the elevator from becoming inoperable.
    Type: Application
    Filed: September 29, 2003
    Publication date: January 18, 2007
    Applicant: MITSUBISHI DENKI KABUSHIKI KAISHA
    Inventors: Masaya Sakai, Takaharu Ueda