Patents by Inventor Kenichi Fujie
Kenichi Fujie 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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Publication number: 20240082968Abstract: A mounting method includes a storing step of storing a plurality of cutting blades on a storage tray having a plurality of storage regions for storing the cutting blades, a replacement product position identifying step of reading identification marks on the cutting blades stored on the storage tray with a reading unit and identifying which storage regions the cutting blades to be mounted in a cutting apparatus are stored in on the basis of the read identification marks, a positioning step of positioning the storage tray on which the cutting blades are stored in a consumable product replacing position, and after the positioning step has been carried out, a mounting step of mounting one of the cutting blades from the storage tray in the cutting apparatus with a replacing device on the basis of the storage regions identified in the replacement product position identifying step.Type: ApplicationFiled: August 22, 2023Publication date: March 14, 2024Inventors: Kazuki TERADA, Kenichi FUJIE, Zhibo SU
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Patent number: 11772300Abstract: A blade holding jig for holding a washer-type cutting blade via an annular retainer flange includes an annular flange holding portion configured to hold a first annular surface of the retainer flange under suction, and an annular non-contact suction portion arranged on an outer peripheral portion of the flange holding portion and configured to produce a negative pressure by ejection of a fluid toward the outer peripheral portion of the retainer flange held by the flange holding portion and to draw up the cutting blade toward the retainer flange. The cutting blade drawn up toward the retainer flange by the non-contact suction portion is held on the retainer flange by a suction force acting from the flange holding portion via a plurality of through holes disposed extending from a second annular surface to the first annular surface of the retainer flange.Type: GrantFiled: March 24, 2021Date of Patent: October 3, 2023Assignee: DISCO CORPORATIONInventors: Zhibo Su, Kazuki Terada, Kenichi Fujie
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Publication number: 20210316477Abstract: A blade holding jig for holding a washer-type cutting blade via an annular retainer flange includes an annular flange holding portion configured to hold a first annular surface of the retainer flange under suction, and an annular non-contact suction portion arranged on an outer peripheral portion of the flange holding portion and configured to produce a negative pressure by ejection of a fluid toward the outer peripheral portion of the retainer flange held by the flange holding portion and to draw up the cutting blade toward the retainer flange. The cutting blade drawn up toward the retainer flange by the non-contact suction portion is held on the retainer flange by a suction force acting from the flange holding portion via a plurality of through holes disposed extending from a second annular surface to the first annular surface of the retainer flange.Type: ApplicationFiled: March 24, 2021Publication date: October 14, 2021Inventors: Zhibo SU, Kazuki TERADA, Kenichi FUJIE
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Patent number: 10496576Abstract: The present invention is an SPI-communication-method communication apparatus that has a plurality of slave communication units for a single master communication unit and an electric power converter utilizing the communication apparatus; the master communication unit outputs communication signals simultaneously to all of the slave communication units and separately reads respective data signals outputted by the slave communication units, in accordance with a priority.Type: GrantFiled: May 22, 2015Date of Patent: December 3, 2019Assignee: Mitsubishi Electric CorporationInventors: Kenichi Fujie, Isao Tottori, Katsuya Tsujimoto
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Patent number: 10151605Abstract: In a rotation angle detection device for detecting a rotation angle and a rotation speed of a motor generator by using a resolver, a resolver detection accuracy is improved by raising the amplitude or frequency of an excitation signal when the motor generator is performing a driving operation. Furthermore, by reducing the amplitude or frequency of the excitation signal when the motor generator is not performing a driving operation, it is possible to suppress the amount of heat generated by the excitation circuit and the resolver, while maintaining a resolver detection accuracy that enables information about the rotation speed of the motor generator to be obtained.Type: GrantFiled: November 6, 2014Date of Patent: December 11, 2018Assignee: Mitsubishi Electric CorporationInventors: Kenichi Fujie, Katsuya Tsujimoto, Isao Tottori, Naruki Suetake
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Publication number: 20180267915Abstract: The present invention is an SPI-communication-method communication apparatus that has a plurality of slave communication units for a single master communication unit and an electric power converter utilizing the communication apparatus; the master communication unit outputs communication signals simultaneously to all of the slave communication units and separately reads respective data signals outputted by the slave communication units, in accordance with a priority.Type: ApplicationFiled: May 22, 2015Publication date: September 20, 2018Applicant: Mitsubishi Electric CorporationInventors: Kenichi FUJIE, Isao TOTTORI, Katsuya TSUJIMOTO
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Patent number: 9793846Abstract: A power conversion device has an internal power supply switch and a bias power supply switch connected in parallel with the internal power supply switch, wherein, when an output voltage of an internal power supply circuit is greater than a predetermined value when a power supply is started up, the bias power supply switch opens a current path, and when the power supply is stopped, the step-up power supply circuit is stopped based on a stop signal output by the internal power supply circuit and the internal power supply switch closes the current path, and when the output voltage of the internal power supply circuit becomes lower than a predetermined value, the bias power supply switch closes the current path.Type: GrantFiled: June 30, 2014Date of Patent: October 17, 2017Assignee: Mitsubishi Electric CorporationInventors: Kenichi Fujie, Katsuya Tsujimoto, Takamasa Asai
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Patent number: 9793835Abstract: Provided is a power conversion device, including a fault determination unit (11) for determining, based on phase voltages of a polyphase dynamo-electric machine (4) detected by phase voltage detection units (10), a power, earth, or open fault of armature windings of the polyphase dynamo-electric machine (4). The fault determination unit (11) determines, in a state that all power semiconductor switching elements (2) are in an off state and no induction voltage is generated in the armature windings of the polyphase dynamo-electric machine (4), the power fault when all the phase voltages are substantially equal to an anode potential of a DC power supply (3), the earth fault when all the phase voltages are substantially equal to a cathode potential of the DC power supply (3), and the open fault when all the phase voltages are not substantially the same potential.Type: GrantFiled: December 14, 2016Date of Patent: October 17, 2017Assignee: Mitsubishi Electric CorporationInventors: Kenichi Fujie, Katsuya Tsujimoto, Takamasa Asai
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Publication number: 20170276515Abstract: In a rotation angle detection device for detecting a rotation angle and a rotation speed of a motor generator by using a resolver, a resolver detection accuracy is improved by raising the amplitude or frequency of an excitation signal when the motor generator is performing a driving operation. Furthermore, by reducing the amplitude or frequency of the excitation signal when the motor generator is not performing a driving operation, it is possible to suppress the amount of heat generated by the excitation circuit and the resolver, while maintaining a resolver detection accuracy that enables information about the rotation speed of the motor generator to be obtained.Type: ApplicationFiled: November 6, 2014Publication date: September 28, 2017Applicant: Mitsubishi Electric CorporationInventors: Kenichi FUJIE, Katsuya TSUJIMOTO, Isao TOTTORI, Naruki SUETAKE
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Patent number: 9709631Abstract: The present invention relates to a diagnosis apparatus for a field winding type rotating electric machine. The diagnosis apparatus includes an internal power supply circuit having an open fault determination potential, and determines, on the basis of a measurement result of a voltage value of a circuit that includes the field winding in a fault diagnosis condition, that a disconnection has occurred in the circuit when the measurement result is within an open fault determination voltage range including the open fault determination potential, that a power fault has occurred in the circuit when the measurement result is within a power fault determination voltage range including the positive electrode potential, and that an earth fault has occurred in the circuit when the measurement result is within an earth fault determination voltage range including the negative electrode potential.Type: GrantFiled: July 24, 2013Date of Patent: July 18, 2017Assignee: Mitsubishi Electric CorporationInventors: Kenichi Fujie, Katsuya Tsujimoto, Takamasa Asai
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Patent number: 9680373Abstract: The present invention has: a pump capacitor (12), which has one end thereof connected to the source power supply (B) side via a diode (7), and which has the other end thereof connected to two kinds of voltage sources via switches (3, 4); and an output capacitor (13), which has one end there of connected to a high-potential terminal of a pump capacitor via a diode (8), and the other end thereof connected to a source power supply. A filter circuit configured with a resistor (15) and a capacitor (11) is provided between the source power supply and the diode (7).Type: GrantFiled: April 25, 2013Date of Patent: June 13, 2017Assignee: Mitsubishi Electric CorporationInventors: Naruki Suetake, Takamasa Asai, Kenichi Fujie
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Publication number: 20170093311Abstract: Provided is a power conversion device, including a fault determination unit (11) for determining, based on phase voltages of a polyphase dynamo-electric machine (4) detected by phase voltage detection units (10), a power, earth, or open fault of armature windings of the polyphase dynamo-electric machine (4). The fault determination unit (11) determines, in a state that all power semiconductor switching elements (2) are in an off state and no induction voltage is generated in the armature windings of the polyphase dynamo-electric machine (4), the power fault when all the phase voltages are substantially equal to an anode potential of a DC power supply (3), the earth fault when all the phase voltages are substantially equal to a cathode potential of the DC power supply (3), and the open fault when all the phase voltages are not substantially the same potential.Type: ApplicationFiled: December 14, 2016Publication date: March 30, 2017Applicant: Mitsubishi Electric CorporationInventors: Kenichi FUJIE, Katsuya TSUJIMOTO, Takamasa ASAI
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Patent number: 9564841Abstract: Provided is a power conversion device, including a fault determination unit (11) for determining, based on phase voltages of a polyphase dynamo-electric machine (4) detected by phase voltage detection units (10), a power, earth, or open fault of armature windings of the polyphase dynamo-electric machine (4). The fault determination unit (11) determines, in a state that all power semiconductor switching elements (2) are in an off state and no induction voltage is generated in the armature windings of the polyphase dynamo-electric machine (4), the power fault when all the phase voltages are substantially equal to an anode potential of a DC power supply (3), the earth fault when all the phase voltages are substantially equal to a cathode potential of the DC power supply (3), and the open fault when all the phase voltages are not substantially the same potential.Type: GrantFiled: November 1, 2012Date of Patent: February 7, 2017Assignee: Mitsubishi Electric CorporationInventors: Kenichi Fujie, Katsuya Tsujimoto, Takamasa Asai
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Publication number: 20170019051Abstract: A power conversion device has an internal power supply switch and a bias power supply switch connected in parallel with the internal power supply switch, wherein, when an output voltage of an internal power supply circuit is greater than a predetermined value when a power supply is started up, the bias power supply switch opens a current path, and when the power supply is stopped, the step-up power supply circuit is stopped based on a stop signal output by the internal power supply circuit and the internal power supply switch closes the current path, and when the output voltage of the internal power supply circuit becomes lower than a predetermined value, the bias power supply switch closes the current path.Type: ApplicationFiled: June 30, 2014Publication date: January 19, 2017Applicant: Mitsubishi Electric CorporationInventors: Kenichi FUJIE, Katsuya TSUJIMOTO, Takamasa ASAI
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Publication number: 20160146890Abstract: The present invention relates to a diagnosis apparatus for a field winding type rotating electric machine. The diagnosis apparatus includes an internal power supply circuit having an open fault determination potential, and determines, on the basis of a measurement result of a voltage value of a circuit that includes the field winding in a fault diagnosis condition, that a disconnection has occurred in the circuit when the measurement result is within an open fault determination voltage range including the open fault determination potential, that a power fault has occurred in the circuit when the measurement result is within a power fault determination voltage range including the positive electrode potential, and that an earth fault has occurred in the circuit when the measurement result is within an earth fault determination voltage range including the negative electrode potential.Type: ApplicationFiled: July 24, 2013Publication date: May 26, 2016Applicant: Mitsubishi Electric CorporationInventors: Kenichi FUJIE, Katsuya TSUJIMOTO, Takamasa ASAI
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Publication number: 20150318783Abstract: The present invention has: a pump capacitor (12), which has one end thereof connected to the source power supply (B) side via a diode (7), and which has the other end thereof connected to two kinds of voltage sources via switches (3, 4); and an output capacitor (13), which has one end there of connected to a high-potential terminal of a pump capacitor via a diode (8), and the other end thereof connected to a source power supply. A filter circuit configured with a resistor (15) and a capacitor (11) is provided between the source power supply and the diode (7).Type: ApplicationFiled: April 25, 2013Publication date: November 5, 2015Applicant: Mitsubishi Electric CorporationInventors: Naruki SUETAKE, Takamasa ASAI, Kenichi FUJIE
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Publication number: 20150280623Abstract: Provided is a power conversion device, including a fault determination unit (11) for determining, based on phase voltages of a polyphase dynamo-electric machine (4) detected by phase voltage detection units (10), a power, earth, or open fault of armature windings of the polyphase dynamo-electric machine (4). The fault determination unit (11) determines, in a state that all power semiconductor switching elements (2) are in an off state and no induction voltage is generated in the armature windings of the polyphase dynamo-electric machine (4), the power fault when all the phase voltages are substantially equal to an anode potential of a DC power supply (3), the earth fault when all the phase voltages are substantially equal to a cathode potential of the DC power supply (3), and the open fault when all the phase voltages are not substantially the same potential.Type: ApplicationFiled: November 1, 2012Publication date: October 1, 2015Applicant: Mitsubishi Electric CorporationInventors: Kenichi Fujie, Katsuya Tsujimoto, Takamasa Asai
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Patent number: 8901865Abstract: A current limiting device includes a switching portion, a reflux portion connected to a connection point of the switching portion and an output terminal, and supplying a current to a motor generator while the switching portion is cutting off the current, a current measurement portion that measures the current flowing from the output terminal to the motor generator, and a current control portion that controls the switching portion to switch ON/OFF according to a current value measured by the current measurement portion. When the motor generator is motor-driven using electric power of a condenser, the current control portion limits the current to the motor generator by controlling the switching portion to switch ON/OFF in a case where the measured current value is equal to or exceeds a predetermined current value.Type: GrantFiled: October 8, 2010Date of Patent: December 2, 2014Assignee: Mitsubishi Electric CorporationInventors: Kenichi Fujie, Shogo Matsuoka, Katsuya Tsujimoto, Takamasa Asai
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Publication number: 20110234127Abstract: A current limiting device for vehicle includes a switching portion that passes/cuts off a current from an input terminal to an output terminal, a reflux portion that is connected to a connection point of the switching portion and the output terminal and supplies a current to a motor generator while the switching portion is cutting off the current, a current measurement portion that measures the current flowing from the output terminal to the motor generator, and a current control portion that controls the switching portion to switch ON/OFF according to a current value measured by the current measurement portion. When the motor generator is motor-driven using electric power of a condenser, the current control portion limits the current to the motor generator by controlling the switching portion to switch ON/OFF in a case where the measured current value is equal to or exceeds a predetermined current value.Type: ApplicationFiled: October 8, 2010Publication date: September 29, 2011Applicant: Mitsubishi Electric CorporationInventors: Kenichi FUJIE, Shogo Matsuoka, Katsuya Tsujimoto, Takamasa Asai
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Patent number: 7889274Abstract: An image input apparatus can acquire an image with a high contrast without saturating a camera output even for a subject having a large light and dark difference while achieving a wide dynamic range. An image sensor has an input-output characteristic varying with a plurality of regions delimited according to a difference in the amount of incident light. A video luminance signal level is detected from a video signal of the image sensor. An amount of light on a screen is calculated from the image luminance signal level. The image sensor is adjusted to make the amount of light on the screen coincide with a target light amount. The target light amount is set such that a relation between the target light amount R and an amount of light Q at a change point that is at the lowest luminance in an input-output characteristic of the image sensor satisfies R<Q.Type: GrantFiled: July 26, 2005Date of Patent: February 15, 2011Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Kenichi Fujie, Yoshiyuki Fujii, Hisashi Ishikura, Tomoko Konda, Takayuki Yamamoto