Patents by Inventor Masato Aoki

Masato Aoki 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).

  • Publication number: 20200198507
    Abstract: A seat of a work vehicle includes a seatback, a seat cushion and an air handling system incorporated within the seatback. The air handling system includes an air circulation space formed inside the seatback, an air handling device disposed in the air circulation space, an inlet portion formed in a top face of the seatback for letting in ambient air into the air circulation space and an outlet portion formed in a lateral portion of the seatback for discharging handled air handled by the air handling device to an area forwardly of the seatback in a vehicle body transverse direction.
    Type: Application
    Filed: December 20, 2018
    Publication date: June 25, 2020
    Applicant: KUBOTA CORPORATION
    Inventors: Masato ASAHARA, Hideki AOKI, Akira MINOURA
  • Patent number: 10651769
    Abstract: A motor drive control device includes: a control circuit unit for outputting a drive control signal for performing advance-angle control of a motor to drive the motor; a motor driving unit for outputting a drive signal to the motor with a phase based on the drive control signal output from the control circuit unit to drive the motor; and a current detecting circuit for detecting a voltage value corresponding to a drive current of the motor, wherein the control circuit unit detects a cross-timing between the voltage value detected by the current detecting circuit and each of two or more reference voltage values, and performs the advance-angle control based on a detection result of the cross-timing to adjust a phase of the drive current.
    Type: Grant
    Filed: May 24, 2018
    Date of Patent: May 12, 2020
    Assignee: MINEBEA MITSUMI INC.
    Inventors: Hiroyuki Kaidu, Masato Aoki, Youhei Serizawa, Zhou Xiao
  • Publication number: 20200106379
    Abstract: A motor control circuit includes a control circuit configured to output a pulse width modulation signal for controlling a switching operation of an inverter circuit, the inverter circuit being configured to supply an alternating current power to a motor, and includes a speed-change detecting circuit configured to detect a change in a speed command signal and, output, in response to the change meeting and exceeding a predetermined limit, a signal indicating that the speed command signal has changed to the control circuit to cause the control circuit to change a duty cycle of the pulse width modulation signal, the speed command signal specifying a target value of a rotational speed of the motor.
    Type: Application
    Filed: September 20, 2019
    Publication date: April 2, 2020
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventors: Makio ABE, Shu HAYASHI, Masato AOKI
  • Publication number: 20200106381
    Abstract: A motor control circuit includes a control circuit configured to control a switching operation of an inverter circuit, the inverter circuit being configured to supply an alternating current power to a motor, and includes a determination-information generating circuit configured to generate at least one determination value that conveys information on whether the motor malfunctions or deteriorates. The motor control circuit includes a determination circuit configured to determine whether the motor malfunctions or deteriorates based on the determination value to output, as an interrupt signal, a signal indicating that the motor malfunctions or deteriorates to the control circuit.
    Type: Application
    Filed: September 20, 2019
    Publication date: April 2, 2020
    Applicant: MITSUMI ELECTRIC CO., LTD.
    Inventors: Makio ABE, Takatoshi ITAGAKI, Shu HAYASHI, Masato AOKI
  • Patent number: 10609838
    Abstract: A motor driving control device, together with a controller, included in a motor driving system, has a control circuit controlling drive of a motor according to instruction information transmitted from the controller. The control circuit has a first acquisition unit acquiring setting reference information related to assignment of identification information for the motor driving control device itself, the setting reference information being input from outside, a setting unit setting the motor driving control device's identification information based on a magnitude of a setting voltage input from the outside and the setting reference information, and a second acquisition unit acquiring the instruction information based on the identification information set by the setting unit.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: March 31, 2020
    Assignee: MINEBEA MITSUMI INC.
    Inventors: Hiroyuki Kaidu, Masato Aoki
  • Patent number: 10575436
    Abstract: A motor drive control apparatus is mounted on a fan having a motor and an impeller coupled to the motor. The motor drive control apparatus includes a temperature sensor for measuring a temperature correlated with a temperature of the impeller, a temperature comparing portion for comparing a detected temperature based on a measurement result of the temperature sensor with a first temperature higher than a highest value of a design temperature of the fan, a rotation speed setting portion for setting an upper limit value of the rotation speed of the motor based on a comparison result the temperature comparing portion, a PWM command portion for controlling such that the rotation speed of the motor does not exceed the upper limit value set by the rotation speed setting portion.
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: February 25, 2020
    Assignee: Minebea Mitsumi Inc.
    Inventors: Hiroyuki Kaidu, Masato Aoki
  • Patent number: 10557002
    Abstract: A resin composition for fiber reinforced plastic which is a resin composition comprising an epoxy resin (A), a cyanate resin (B) and a liquid aromatic amine curing agent (C), and, as necessary, further an active energy radiation absorbable component (D), wherein 20 to 100 percent by mass of the aforementioned epoxy resin (A) is an epoxy compound expressed by the following general formula (1), a cured product obtained by curing a composition containing said resin composition and a high-strength fiber-reinforced plastic; wherein (a) and (b) each independently express an integer from 2 to 10, (c) expresses an integer from 0 to 3, R1 and R2 each independently express a bivalent hydrocarbon group having 2 to 5 carbon atoms, and R3 expresses a single bond, a methylene group or —C(CH3)2—.
    Type: Grant
    Filed: August 25, 2016
    Date of Patent: February 11, 2020
    Assignee: ADEKA CORPORATION
    Inventors: Naohiro Fujita, Kazuhide Morino, Tasuku Aoki, Tomoko Kimura, Masato Inadome
  • Publication number: 20200028457
    Abstract: A motor driving control device has a motor driving unit configured to selectively energize coils with a plurality of phases of a motor, a control circuit unit configured to control an operation of the motor driving unit by outputting a driving control signal to the motor driving unit, and a position detector configured to output a position signal which corresponds to any one phase of the plurality of phases and a phase of which changes depending on a position of a rotor of the motor. the control circuit unit detects a transition of values of a back electromotive force induced in the one phase in a detection period corresponding to a change timing of the position signal when beginning to start up the motor, and determines a rotational state of the motor including a rotational direction of the motor based on a detection result of the transition of the values of the back electromotive force.
    Type: Application
    Filed: July 12, 2019
    Publication date: January 23, 2020
    Inventors: Xiao ZHOU, Hiroyuki KAIDU, Masato AOKI, Mitsunari TERADA
  • Patent number: 10538179
    Abstract: A mower may include a body frame, a mower unit installed to the body frame, a grass collection container optionally installed at a rear portion of the body frame, a front-wheel support arm provided at a front portion of the body frame, a left front wheel and a right front wheel supported by the front-wheel support arm, a counterweight, and a weight bracket. The weight bracket may be provided on the front-wheel support arm and configured to attach the counterweight thereto. The counterweight may include a plurality of weight elements. The weight bracket may include a plurality of attachment portions. The at least one weight element may be attached to each attachment portion.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: January 21, 2020
    Assignee: Kubota Corporation
    Inventors: Masato Asahara, Ryotaro Senda, Seiya Yoshida, Hideki Aoki, Kensuke Uemoto, Yoshikazu Togoshi, Yuto Fujii
  • Patent number: 10530280
    Abstract: A motor driving control device includes a motor driving unit to drive the motor, a rotational position detecting circuit for generating rotational position information, and a controller. The controller outputs, to the motor driving unit, a first drive control signal for controlling an adjustment at a time of energization switching to reduce resonance between a natural frequency of the motor and a rotational component of the motor based on the rotational position information when an actual rotational speed of the motor is equal to or higher than a predetermined rotational speed lower than a target rotational speed, and outputs, to the driving unit, a second drive control signal for controlling regular energization switching without performing the adjustment at the time of energization switching when the actual rotational speed is less than the predetermined rotational speed and a set duty is within an error range of a maximum value.
    Type: Grant
    Filed: August 13, 2018
    Date of Patent: January 7, 2020
    Assignee: MINEBEA MITSUMI INC.
    Inventors: Hiroyuki Kaidu, Masato Aoki
  • Patent number: 10511862
    Abstract: A video encoder 101 encodes image data of an input moving image based on prediction and generates a video bitstream of encoded pictures. A refresh controller 102 refreshes such that a partial area in the picture is assumed as a unit area to be refreshed and the unit area to be refreshed is moved on a picture-by-picture basis. A display-enabled area encoder 103 encodes a display-enabled area for each picture and generating a display-enabled area information bitstream in refreshing. A multiplexer 104 multiplexes the video bitstream and the display-enabled area information bitstream.
    Type: Grant
    Filed: May 31, 2013
    Date of Patent: December 17, 2019
    Assignee: NEC Corporation
    Inventors: Hirofumi Aoki, Keiichi Chono, Masato Tsukada
  • Publication number: 20190375366
    Abstract: An airbag system includes a bag unit which deploys on an enginehood of a vehicle body by a gas from an inflator. The bag unit is divided into bags back and forth and right and left. The bags include adjacent bags communicating with each other through communication paths. The bags include at least one upright bag to be upright on at least one fender of left and right fenders of the vehicle body. A gas flows from a front bag of the bags located at a front side of the vehicle body through communication paths to a rear bag of the bags behind the front bag and the at least one upright bag on the side of the front bag.
    Type: Application
    Filed: June 5, 2019
    Publication date: December 12, 2019
    Inventors: Osamu KANNO, Kenyu OKAMURA, Masato SASAKI, Takashi AOKI, Hidetoshi NAKAMURA
  • Publication number: 20190375368
    Abstract: A vehicle body front structure includes a pop-up hood unit disposed on a front end portion of an enginehood of a vehicle body and configured to move upward above the enginehood by using a lift-up mechanism. The pop-up hood unit is deformable due to an input of an impact upon a collision with a target for protection. The pop-up hood unit is shaped as a plate that extends in a left-right direction of the vehicle body and has a plate surface having an inclination angle that is variable relative to a horizontal plane.
    Type: Application
    Filed: June 5, 2019
    Publication date: December 12, 2019
    Inventors: Osamu KANNO, Takashi AOKI, Masato SASAKI, Kenyu OKAMURA, Hidetoshi NAKAMURA
  • Publication number: 20190375367
    Abstract: An air bag device has an inflator and a bag unit configured to be deployed on a front part of a vehicle body with a gas supplied from the inflator. The bag unit includes a first bag, a second bag, and a connector, which are annularly connected to one another, and when the bag unit is deployed, the first bag and the second bag are erected on the vehicle body into a mountain-like shape in such a way that the bag unit forms a substantially triangular shape as a whole.
    Type: Application
    Filed: June 6, 2019
    Publication date: December 12, 2019
    Inventors: Takashi Aoki, Osamu Kanno, Kenyu Okamura, Masato Sasaki, Hidetoshi Nakamura, Masahiro Motoyoshi, Atsushi Nakajima
  • Patent number: 10498265
    Abstract: Provided is a motor drive control device capable of accurately and speedily detecting an abnormal condition of a motor. When the motor is started, the control circuit section determines the commanded rotational speed in accordance with an actual rotational speed calculated based on the position signal, the control circuit section determines whether or not the motor is in an abnormal condition based on a predetermined determination condition for a predetermined period, upon determining that the motor is in the abnormal condition, the control circuit section outputs the drive control signal to the motor drive section to stop the motor, and the abnormal condition includes a reversely rotating state. In the reversely rotating state the motor rotating in a direction opposite to a rotating direction when the motor is successfully started.
    Type: Grant
    Filed: May 3, 2018
    Date of Patent: December 3, 2019
    Assignee: MINEBEA MITSUMI INC.
    Inventors: Masato Aoki, Hiroyuki Kaidu
  • Patent number: 10476415
    Abstract: According to an aspect of the present disclosure, a motor drive control device includes a motor drive unit having a plurality of switch elements connected to a power supply source and supplying a driving current to a plurality of phase coils of a motor, a control circuit unit outputting, to the motor drive unit, a drive control signal for operating the plurality of switch elements to sequentially switch energization patterns for the plurality of phase coils, and a current detecting circuit for detecting a voltage value corresponding to a magnitude of the driving current, wherein the control circuit unit includes a first determination unit determining whether a state of overcurrent where a magnitude of the driving current exceeds a predetermined overcurrent threshold occurs based on the voltage value each time an energization pattern is switched, and a second determination unit determining whether driving of the motor is in an abnormal condition based on a determination result of the first determination unit f
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: November 12, 2019
    Assignee: MINEBEA MITSUMI INC.
    Inventors: Masato Aoki, Hiroyuki Kaidu
  • Publication number: 20190327493
    Abstract: A video decoding device includes a demultiplexer which demultiplexes Supplemental-Enhancement-Information having information indicating segments where a refresh has completed in a current picture, the segments including an intra-encoded-segment in the current picture, and a video bitstream including video data of an encoded slice; an extractor which extracts the information from a message which is part of the demultiplexed Supplemental-Enhancement-Information; and a video decoder which decodes image data from the demultiplexed video bitstream.
    Type: Application
    Filed: June 28, 2019
    Publication date: October 24, 2019
    Inventors: Hirofumi AOKI, Keiichi CHONO, Masato TSUKADA
  • Publication number: 20190315972
    Abstract: A composition is provided comprising (a) a polysilazane having a monovalent hydrocarbon group, (b) untreated metal oxide nanoparticles, metal oxide nanoparticles having a monovalent hydrocarbon group, or metal oxide nanoparticles having an alkylsilyl or alkoxysilyl group, and (c) an aprotic solvent. The composition has storage stability and is suitable for forming a film having water repellent, especially superhydrophobic properties.
    Type: Application
    Filed: April 10, 2019
    Publication date: October 17, 2019
    Applicant: Shin-Etsu Chemical Co., Ltd.
    Inventors: Ayumu Kiyomori, Shotaro Aoki, Masato Kawakami, Tohru Kubota
  • Publication number: 20190307017
    Abstract: A motor drive control apparatus is mounted on a fan having a motor and an impeller coupled to the motor. The motor drive control apparatus includes a temperature sensor for measuring a temperature correlated with a temperature of the impeller, a temperature comparing portion for comparing a detected temperature based on a measurement result of the temperature sensor with a first temperature higher than a highest value of a design temperature of the fan, a rotation speed setting portion for setting an upper limit value of the rotation speed of the motor based on a comparison result the temperature comparing portion, a PWM command portion for controlling such that the rotation speed of the motor does not exceed the upper limit value set by the rotation speed setting portion.
    Type: Application
    Filed: January 28, 2019
    Publication date: October 3, 2019
    Inventors: Hiroyuki KAIDU, Masato Aoki
  • Patent number: 10381964
    Abstract: There is provided a motor driving control device and a motor driving control method capable of quickly activating a motor. The motor driving control device comprises a motor driving unit, a control circuit unit and a position detector. The motor driving unit selectively energizes coils Lu, Lv, Lw of a plurality of phases of the motor. The control circuit unit outputs a driving control signal C1 to the motor driving unit to switch, in a predetermined order, an energization phase of the coils Lu, Lv, Lw of the plurality of phases to be energized by the motor driving unit. The position detector outputs a position signal corresponding to a position of a rotor of the motor.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: August 13, 2019
    Assignee: MINEBEA MITSUMI INC.
    Inventor: Masato Aoki