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).
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Patent number: 9877410Abstract: 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: GrantFiled: April 26, 2013Date of Patent: January 23, 2018Assignee: Daikin Industries, Ltd.Inventors: Junichi Teraki, Akihiko Oguri, Masanobu Kita
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Patent number: 9523529Abstract: 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: GrantFiled: April 8, 2013Date of Patent: December 20, 2016Assignee: DAIKIN INDUSTRIES, LTD.Inventors: Akihiko Oguri, Junichi Teraki, Masanobu Kita, Hiroshi Doumae, Motonobu Ikeda, Masahide Fujiwara
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Patent number: 9377237Abstract: 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: GrantFiled: April 8, 2013Date of Patent: June 28, 2016Assignee: Daikin Industries, Ltd.Inventors: Akihiko Oguri, Junichi Teraki, Masanobu Kita, Hiroshi Doumae, Motonobu Ikeda, Masahide Fujiwara
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Publication number: 20150128631Abstract: 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: ApplicationFiled: April 8, 2013Publication date: May 14, 2015Inventors: Akihiko Oguri, Junichi Teraki, Masanobu Kita, Hiroshi Doumae, Motonobu Ikeda, Masahide Fujiwara
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Publication number: 20150114021Abstract: 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: ApplicationFiled: April 8, 2013Publication date: April 30, 2015Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Akihiko Oguri, Junichi Teraki, Masanobu Kita, Hiroshi Doumae, Motonobu Ikeda, Masahide Fujiwara
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Publication number: 20150082823Abstract: 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: ApplicationFiled: April 26, 2013Publication date: March 26, 2015Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Junichi Teraki, Akihiko Oguri, Masanobu Kita
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Patent number: 7392158Abstract: 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: GrantFiled: July 24, 2003Date of Patent: June 24, 2008Assignee: Daikin Industries, Ltd.Inventors: Takeshi Hikawa, Toshiyuki Maeda, Shinichi Kasahara, Takahiro Yamaguchi, Shigenobu Izumi, Kiyoshi Koizumi, Masanobu Kita
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Patent number: 7180263Abstract: 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: GrantFiled: November 9, 2001Date of Patent: February 20, 2007Assignee: Daikin Industries, Ltd.Inventors: Toshiyuki Maeda, Manabu Kosaka, Masanobu Kita
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Publication number: 20050247073Abstract: 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: ApplicationFiled: July 24, 2003Publication date: November 10, 2005Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Takeshi Hikawa, Toshiyuki Maeda, Shinichi Kasahara, Takahiro Yamaguchi, Shigenobu Izumi, Kiyoshi Koizumi, Masanobu Kita
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Publication number: 20040056629Abstract: 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: ApplicationFiled: October 31, 2003Publication date: March 25, 2004Inventors: Toshiyuki Maeda, Manabu Kosaka, Masanobu Kita
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Patent number: 5427208Abstract: 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: GrantFiled: November 28, 1994Date of Patent: June 27, 1995Assignees: Hirotetsu Motobu, Koji Yoshioka, Masanobu KitaInventors: Hirotetsu Motobu, Koji Yoshioka, Masanobu Kita, Tadanori Azuma