Patents by Inventor Masanobu Kita

Masanobu Kita 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: 9877410
    Abstract: A cooler is placed on a power module to cool the power module with refrigerant through a refrigerant pipe, and includes a heat transfer plate having a groove into which a cooling pipe is fitted, and a presser plate configured to press the cooling pipe against the groove. The cooler includes a hinge mechanism configured to rotatably attach the presser plate to the heat transfer plate such that the presser plate is switched between an open position at which the groove is exposed and a closed position at which the presser plate covers the groove.
    Type: Grant
    Filed: April 26, 2013
    Date of Patent: January 23, 2018
    Assignee: Daikin Industries, Ltd.
    Inventors: Junichi Teraki, Akihiko Oguri, Masanobu Kita
  • Patent number: 9523529
    Abstract: In a refrigeration apparatus, a main surface of a printed wiring board has a heavy electric region, which is a region in the lower part of the printed wiring board where a heavy electric component group is disposed, and a light electric region, which is a region positioned above the heavy electric region, where a light electric component group is disposed. A refrigerant jacket contacts a power device which is disposed in the heavy electric region. A liquid pipe of the refrigerant pipe includes a portion that extends upwards towards the refrigerant jacket, and a cooling portion contacts the refrigerant jacket.
    Type: Grant
    Filed: April 8, 2013
    Date of Patent: December 20, 2016
    Assignee: DAIKIN INDUSTRIES, LTD.
    Inventors: Akihiko Oguri, Junichi Teraki, Masanobu Kita, Hiroshi Doumae, Motonobu Ikeda, Masahide Fujiwara
  • Patent number: 9377237
    Abstract: A facing surface of a refrigerant jacket includes a contact portion which contacts a device main body, a first recessed portion which faces a first lead section and secures an insulation distance to the first lead section due to being positioned further away from a power device than the contact portion, and a second recessed portion which faces the second lead section and secures an insulation distance to the second lead section due to being positioned further away from the power device than the contact portion.
    Type: Grant
    Filed: April 8, 2013
    Date of Patent: June 28, 2016
    Assignee: Daikin Industries, Ltd.
    Inventors: Akihiko Oguri, Junichi Teraki, Masanobu Kita, Hiroshi Doumae, Motonobu Ikeda, Masahide Fujiwara
  • Publication number: 20150128631
    Abstract: In a refrigeration apparatus, a main surface of a printed wiring board has a heavy electric region, which is a region in the lower part of the printed wiring board where a heavy electric component group is disposed, and a light electric region, which is a region positioned above the heavy electric region, where a light electric component group is disposed. A refrigerant jacket contacts a power device which is disposed in the heavy electric region. A liquid pipe of the refrigerant pipe includes a portion that extends upwards towards the refrigerant jacket, and a cooling portion contacts the refrigerant jacket.
    Type: Application
    Filed: April 8, 2013
    Publication date: May 14, 2015
    Inventors: Akihiko Oguri, Junichi Teraki, Masanobu Kita, Hiroshi Doumae, Motonobu Ikeda, Masahide Fujiwara
  • Publication number: 20150114021
    Abstract: A facing surface of a refrigerant jacket includes a contact portion which contacts a device main body, a first recessed portion which faces a first lead section and secures an insulation distance to the first lead section due to being positioned further away from a power device than the contact portion, and a second recessed portion which faces the second lead section and secures an insulation distance to the second lead section due to being positioned further away from the power device than the contact portion.
    Type: Application
    Filed: April 8, 2013
    Publication date: April 30, 2015
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Akihiko Oguri, Junichi Teraki, Masanobu Kita, Hiroshi Doumae, Motonobu Ikeda, Masahide Fujiwara
  • Publication number: 20150082823
    Abstract: A cooler is placed on a power module to cool the power module with refrigerant through a refrigerant pipe, and includes a heat transfer plate having a groove into which a cooling pipe is fitted, and a presser plate configured to press the cooling pipe against the groove. The cooler includes a hinge mechanism configured to rotatably attach the presser plate to the heat transfer plate such that the presser plate is switched between an open position at which the groove is exposed and a closed position at which the presser plate covers the groove.
    Type: Application
    Filed: April 26, 2013
    Publication date: March 26, 2015
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Junichi Teraki, Akihiko Oguri, Masanobu Kita
  • Patent number: 7392158
    Abstract: An instantaneous current and instantaneous voltage of a three-phase coil of a brushless DC motor are detected, and the internal condition of a compressor is predicted from these detection values. The prediction about the internal condition of the compressor is made in such a way that motor driving torque which is a parameter of a motor model is identified and poor lubrication, liquid compression or the like is predicted from this identified motor driving torque. This enables it to make, in real time, a failure forecast, failure diagnosis etc. on the compressor.
    Type: Grant
    Filed: July 24, 2003
    Date of Patent: June 24, 2008
    Assignee: Daikin Industries, Ltd.
    Inventors: Takeshi Hikawa, Toshiyuki Maeda, Shinichi Kasahara, Takahiro Yamaguchi, Shigenobu Izumi, Kiyoshi Koizumi, Masanobu Kita
  • Patent number: 7180263
    Abstract: Synchronous motor controlling apparatus and method controls power applied to minimize or eliminate speed variations of a synchronous motor due to variations in load imposed the motor. The rotational position of a rotor of the synchronous motor based on the input terminal voltages and currents to the synchronous motor, and the power applied to the motor is adjusted accordingly. Higher harmonics of the input voltages and currents may also be used to detect the position of the rotor. In addition, the apparatus and method also accounts for the varying speed command inputs.
    Type: Grant
    Filed: November 9, 2001
    Date of Patent: February 20, 2007
    Assignee: Daikin Industries, Ltd.
    Inventors: Toshiyuki Maeda, Manabu Kosaka, Masanobu Kita
  • Publication number: 20050247073
    Abstract: An instantaneous current and instantaneous voltage of a three-phase coil of a brushless DC motor are detected, and the internal condition of a compressor is predicted from these detection values. The prediction about the internal condition of the compressor is made in such a way that motor driving torque which is a parameter of a motor model is identified and poor lubrication, liquid compression or the like is predicted from this identified motor driving torque. This enables it to make, in real time, a failure forecast, failure diagnosis etc. on the compressor.
    Type: Application
    Filed: July 24, 2003
    Publication date: November 10, 2005
    Applicant: DAIKIN INDUSTRIES, LTD.
    Inventors: Takeshi Hikawa, Toshiyuki Maeda, Shinichi Kasahara, Takahiro Yamaguchi, Shigenobu Izumi, Kiyoshi Koizumi, Masanobu Kita
  • Publication number: 20040056629
    Abstract: This synchronous motor controlling apparatus comprises a current detection section 5a, voltage detection section 5b, position and speed detection section 6, speed difference calculation section 7a, speed controlling section 7b, torque controlling section 7c, multiplication section 7d, phase controlling section 8, and current controlling section 9. The current detection section 5a detects a motor current supplied to the synchronous motor 4. The voltage detection section 5b detects a voltage at a terminal of the synchronous motor 4. The position and speed detection section 6 is determined a motor model therein, receives the motor current and voltage as input, carries out predetermined operation, and detects a rotation speed of a rotor and rotation position of the rotor. The speed difference calculation section 7a calculates a difference between the detected speed and a speed command given from the exterior.
    Type: Application
    Filed: October 31, 2003
    Publication date: March 25, 2004
    Inventors: Toshiyuki Maeda, Manabu Kosaka, Masanobu Kita
  • Patent number: 5427208
    Abstract: A bicycle front wheel control mechanism made up of a suspension system and a brake system. The suspension system has an eccentric retainer having an axle and two L-shaped members, and a shaft portion is carried by a housing through an elastic body at a perpendicularly upper part of the axle. The suspension system is so designed that it can rock relative to the front wheel around an axis of the shaft portion with an axial distance between the shaft portion and the axle as its radius, and the brake system is so designed that a side surface of a rim is made wide in a radial direction.
    Type: Grant
    Filed: November 28, 1994
    Date of Patent: June 27, 1995
    Assignees: Hirotetsu Motobu, Koji Yoshioka, Masanobu Kita
    Inventors: Hirotetsu Motobu, Koji Yoshioka, Masanobu Kita, Tadanori Azuma