Patents by Inventor Akihiro Harada

Akihiro Harada 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: 11972884
    Abstract: A soft magnetic alloy includes a main component of (Fe(1?(?+?))X1?X2?)(1?(a+b+c+d+e))MaBbPcSidCe. X1 is one or more of Co and Ni. X2 is one or more of Al, Mn, Ag, Zn, Sn, As, Sb, Cu, Cr, Bi, N, O, and rare earth elements. M is one or more of Nb, Hf, Zr, Ta, Mo, W, and V. 0.020?a?0.14 is satisfied. 0.020<b?0.20 is satisfied. 0?d?0.060 is satisfied. ??0 is satisfied. ??0 is satisfied. 0??+??0.50 is satisfied. c and e are within a predetermined range. The soft magnetic alloy has a nanohetero structure or a structure of Fe based nanocrystallines.
    Type: Grant
    Filed: January 10, 2019
    Date of Patent: April 30, 2024
    Assignee: TDK CORPORATION
    Inventors: Kazuhiro Yoshidome, Akihiro Harada, Hiroyuki Matsumoto, Kenji Horino, Akito Hasegawa, Kensuke Ara, Hajime Amano, Masakazu Hosono
  • Publication number: 20240067142
    Abstract: A vehicle control device includes: an actuator drive controller configured to control a drive of an actuator; a main motor drive controller configured to control a drive of a main motor; and a stuck determiner. The stuck determiner determines a stuck of the actuator based on a detection value of a sensor unit that detects a physical quantity changed according to a drive state of the actuator. The main motor drive controller is configured to perform an engaging surface pressure reduction control for reducing an engaging surface pressure between a parking gear and a parking lever by driving the main motor, when the stuck determiner determines that the actuator is stuck in releasing a parking lock of the vehicle.
    Type: Application
    Filed: October 24, 2023
    Publication date: February 29, 2024
    Inventors: Akihiro HARADA, Seiji NAKAYAMA, Shigeru KAMIO, Takuji NAKAMURA
  • Publication number: 20240059155
    Abstract: A vehicle control device controls a vehicle drive system including a main motor as a drive source of a vehicle, a parking lock mechanism, and an actuator. The vehicle control device includes an actuator drive control section that controls a drive of the actuator, a main motor drive control section that controls a drive of the main motor, and a range determination unit that determines whether or not a shift range is a parking range. When releasing the parking lock, if the parking range is not released within a parking range release determination time that is variable according to an operating environment, the main motor drive control section performs a meshing surface pressure reduction control for driving the main motor so as to reduce a meshing surface pressure between a parking gear and a parking lever.
    Type: Application
    Filed: October 24, 2023
    Publication date: February 22, 2024
    Inventors: Akihiro HARADA, Shigeru KAMIO, Seiji NAKAYAMA
  • Patent number: 11906045
    Abstract: A control device switches a shift range by driving a motor and moving a detent roller in a parking lock system including an electric actuator having the motor and a detent mechanism. A control unit of the control device includes a drive control part, a position determination part and a range determination part. The drive control part controls driving of the motor. When the detent roller is moved to a target valley portion corresponding to the target range, a position determination part determines that the detent roller has passed over a peak portion based on sensor information. The range determination part is configured to estimate that the detent roller has reached the range of the target range corresponding to the target range at a peak passing over determination timing when it is determined that the detent roller has passed over the peak portion.
    Type: Grant
    Filed: April 18, 2023
    Date of Patent: February 20, 2024
    Assignee: DENSO CORPORATION
    Inventors: Satoko Tanemura, Seiji Nakayama, Akihiro Harada, Haruka Miyano
  • Patent number: 11906062
    Abstract: A fluid control device includes; upstream side and downstream side joint blocks defining a fluid flow path, and having engaging portions at a bottom surface side; a support member having a guide portion to which the engaging portions of the upstream side and downstream side joint blocks can be engaged; and a fluid device supported by the support member via the upstream side and the downstream side joint blocks; wherein the upstream side and the downstream side joint blocks are fixed to the guide portion by utilizing a reaction force against a bending force generated by the tightening force of fastening bolts to the upstream side and the downstream side joint blocks and the fluid device connected together, and the length of the engaging portions in the longitudinal direction of the joint blocks is formed shorter than the length of the joint blocks.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: February 20, 2024
    Assignee: FUJIKIN INCORPORATED
    Inventors: Akihiro Harada, Kenji Aikawa
  • Publication number: 20240042869
    Abstract: A vehicle control device includes an actuator drive control section that controls drive of an actuator, a main motor drive control section that controls drive of a main motor, and a stagnation determination section. The stagnation determination section determines a stagnation of the actuator based on a detected value of a sensor unit that detects a physical quantity that changes according to a drive state of the actuator. When performing a meshing surface pressure reduction control for reducing a meshing surface pressure generated at the meshing point between a parking gear and a parking lever by driving the main motor, the main motor drive control section decreases a main motor torque which is a torque of the main motor based on the detected value of the sensor unit.
    Type: Application
    Filed: October 23, 2023
    Publication date: February 8, 2024
    Inventors: Akihiro HARADA, Seiji NAKAYAMA, Shigeru KAMIO
  • Publication number: 20240042849
    Abstract: A vehicle control device controls a vehicle drive system having a main motor serving as a source of drive power of a vehicle, a parking lock mechanism, and an actuator. The vehicle control device includes an actuator drive controller that controls drive of the actuator, and a main motor drive controller that controls drive of the main motor. When a parking lock of the vehicle cannot be released by the actuator due to an engaging surface pressure between a parking gear and a parking lever, the main motor drive controller performs an engaging surface pressure reduction control in which an engaging surface pressure is reduced by driving the main motor to cause an increase of a torque of the main motor by a set increase speed.
    Type: Application
    Filed: October 20, 2023
    Publication date: February 8, 2024
    Inventors: Akihiro HARADA, Seiji NAKAYAMA, Shigeru KAMIO
  • Patent number: 11859733
    Abstract: A valve device comprising: a flow passage block in which a flow passage is formed; a diaphragm configured to open and close the flow passage; an actuator configured to push down the diaphragm via a diaphragm holder; a tubular bonnet formed with an internal thread on an inner circumferential surface, the bonnet being configured to join the flow passage block and the actuator; a tubular adjusting screw threaded to the internal thread, the adjusting screw being configured to come into contact with the diaphragm holder to adjust a valve opening position of the diaphragm; and an annular lock nut configured to lock the adjusting screw by being screwed into the internal thread.
    Type: Grant
    Filed: June 10, 2020
    Date of Patent: January 2, 2024
    Assignee: FUJIKIN INCORPORATED
    Inventors: Akihiro Harada, Tomohiro Nakata, Takeru Miura, Michio Yamaji, Tadayuki Yakushijin, Keisuke Ishibashi
  • Publication number: 20230341048
    Abstract: A control device switches a shift range by driving a motor and moving a detent roller in a parking lock system including an electric actuator having the motor and a detent mechanism. A control unit of the control device includes a drive control part, a position determination part and a range determination part. The drive control part controls driving of the motor. When the detent roller is moved to a target valley portion corresponding to the target range, a position determination part determines that the detent roller has passed over a peak portion based on sensor information. The range determination part is configured to estimate that the detent roller has reached the range of the target range corresponding to the target range at a peak passing over determination timing when it is determined that the detent roller has passed over the peak portion.
    Type: Application
    Filed: April 18, 2023
    Publication date: October 26, 2023
    Inventors: Satoko TANEMURA, Seiji NAKAYAMA, Akihiro HARADA, Haruka MIYANO
  • Publication number: 20230332714
    Abstract: Provided is a fluid control device that is compact and that enables data regarding an internal operation of the device to be acquired. A fluid control device V is disposed in a flow path of a fluid and enables data regarding an internal operation to be acquired, the fluid control device including a sensor hood 44 to which one or more sensors M2 for detecting an operation in the fluid control device are attached; a valve body 1 connected to the sensor hood; a diaphragm 42 held below the sensor hood, inside the valve body; a cover portion 5 that covers the outer periphery of the sensor hood; and a circuit board 60 that is electrically connected to the sensor(s) and for which a thickness direction of the circuit board and a flow path direction are arranged in the same direction on the inside of the cover portion.
    Type: Application
    Filed: September 29, 2021
    Publication date: October 19, 2023
    Inventors: Kengo TSUJINO, Ryutaro TANNO, Hiroto SHIBATA, Akihiro HARADA, Tomohiro NAKATA, Tsutomu SHINOHARA
  • Patent number: 11783974
    Abstract: A soft magnetic alloy comprising a main component having a compositional formula of ((Fe(1?(?+?))X1?X2?)(1?(a+b+c))MaBbCrc)1?dCd, and a sub component including P, S and Ti, wherein X1 is selected from the group Co and Ni, X2 is selected from the group Al, Mn, Ag, Zn, Sn, As, Sb, Bi and rare earth elements, “M” is selected from the group Nb, Hf, Zr, Ta, Mo, W and V, 0.030?a?0.14, 0.005?b?0.20, 0<c?0.040, 0?d?0.040, ??0, ??0, and 0??+??0.50 are satisfied, when soft magnetic alloy is 100 wt %, P is 0.001 to 0.050 wt %, S is 0.001 to 0.050 wt %, and Ti is 0.001 to 0.080 wt %, and when a value obtained by dividing P by S is P/S, then P/S satisfies 0.10?P/S?10.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: October 10, 2023
    Assignee: TDK CORPORATION
    Inventors: Akihiro Harada, Hiroyuki Matsumoto, Kenji Horino, Kazuhiro Yoshidome, Akito Hasegawa, Hajime Amano, Kensuke Ara, Seigo Tokoro
  • Patent number: 11774000
    Abstract: A fluid control device includes: a joint block defining a fluid flow path open to an upper surface thereof, and which has an engaging portion on the bottom surface side thereof; a support member having a guide portion which restrains the joint block on the upper surface while permitting the joint block to move in longitudinal direction; and a fluid device fixed to the upper surface of the joint block. The support member is provided with at least one plunger such that the tip end portion protrudes from the upper surface of the support member. A recess is provided in the bottom surface of the joint block, and the recess engages with the tip end portion of the plunger to set the position of the joint block in the longitudinal direction.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: October 3, 2023
    Assignee: FUJIKIN INCORPORATED
    Inventors: Kenji Aikawa, Tomohiro Nakata, Toshiyuki Inada, Akihiro Harada, Takahiro Matsuda, Tsutomu Shinohara
  • Patent number: 11774015
    Abstract: A pipe joint includes first and second sleeves having fluid flow paths communicating with each other; an annular gasket interposed between abutting end surfaces of the sleeves; a male screw member having a through hole into which the first sleeve is inserted; and a female screw member having a through hole into which the second sleeve is inserted, the sleeves being joined by screwing the male screw member with the female screw member, wherein the pipe joint has a leak port opened at a portion of the outer peripheral surface of the male screw member not covered by the female screw member and communicates with a gap between the male screw member and the first sleeve to detect a leak fluid leaked from gaps between the sleeves and the gasket.
    Type: Grant
    Filed: March 8, 2021
    Date of Patent: October 3, 2023
    Assignee: FUJIKIN INCORPORATED
    Inventors: Akihiro Harada, Tomohiro Nakata, Tsuneyuki Okabe, Yuya Shindo
  • Publication number: 20230258281
    Abstract: A valve V1 capable of detecting an operation abnormality has a magnet M1 that is attached in the vicinity of a pressing adapter 52 of a stem 53 that slides according to an opening/closing operation of the valve V1, and a magnetic sensor M2 that is attached to a surface acing the stem 53, inside the pressing adapter 52 that presses a peripheral edge of a diaphragm 51, and detects a change in a distance between the magnet M1 and the magnetic sensor M2. Further, an abnormality determination mechanism compares the change in the distance between the magnet M1 and the magnetic sensor M2 at the time of abnormality diagnosis detected by the magnetic sensor M2 and a previously measured change in the distance between the magnet M and the magnetic sensor M2 at the time of normality, and determines whether or not there is an abnormality.
    Type: Application
    Filed: April 19, 2023
    Publication date: August 17, 2023
    Applicant: Fujikin Incorporated
    Inventors: Ryutaro Tanno, Kenji Aikawa, Akihiro Harada, Yuya Suzuki, Takahiro Matsuda, Katsunori Komehana, Masahiko Ochiishi, Tsutomu Shinohara
  • Patent number: 11669067
    Abstract: A work management apparatus, method, and system enable to accurately manage position, tightening torque and other information for all fastening parts, for tightening work using a tool with a torque sensor. The system includes: a driver provided with a torque sensor; and first and second cameras that capture images of a product from different viewpoints. The torque sensor starts measurement of the tightening torque when a detected tightening torque exceeds a set threshold value, stops measurement of the tightening torque when the measurement data satisfies a predetermined condition, and outputs torque related data that includes measurement time. The system further includes: a PC that calculates coordinates of an engagement position of a bit from a plurality of image data captured by the first and the second cameras corresponding to the measurement time included in the torque related data; and a marker mounting device provided with a marker and removably mounted to the bit.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: June 6, 2023
    Assignee: FUJIKIN INCORPORATED
    Inventors: Yuto Kawauchi, Yuya Suzuki, Ryutaro Tanno, Akihiro Harada, Tsutomu Shinohara
  • Publication number: 20230136072
    Abstract: A valve which can accurately detect an operation of the valve is provided. The valve includes a valve body defining a fluid flow passage, a valve disk operating to be able to open and close the fluid flow passage, an actuator driving the valve disk by supplying or interrupting a working fluid, a stem transmitting a driving force of the actuator to the valve disk, a detection means detecting an opening and closing operation of the valve disk, and an elastic member fixing a ring-shaped magnetic body inserted through an end of the stem to the stem. The detection means includes the magnetic body fixed by the elastic member, and a magnetic sensor detecting a change in a magnetic field of the magnetic body.
    Type: Application
    Filed: September 27, 2022
    Publication date: May 4, 2023
    Inventors: Kengo TSUJINO, Tomoki NAKADA, Ryutaro TANNO, Yuya SUZUKI, Akihiro HARADA, Tsutomu SHINOHARA
  • Patent number: 11628500
    Abstract: A metal powder producing apparatus comprising a melted metal supplying part discharging a melted metal, a cylinder body provided below the melted metal supplying part, and a cooling liquid layer forming part forming a flow of a cooling liquid for cooling the melted metal discharged from the melted metal supplying part along an inner circumference face of the cylinder body, wherein the cooling liquid layer forming part has a primary pressure reservoir, and the primary pressure reservoir is provided on an outer circumference part of the cylinder body.
    Type: Grant
    Filed: June 30, 2021
    Date of Patent: April 18, 2023
    Assignee: TDK CORPORATION
    Inventors: Kenji Horino, Kazuhiro Yoshidome, Akihiro Harada, Hiroyuki Matsumoto
  • Patent number: 11586175
    Abstract: A tool is equipped with a torque sensor, suited for a tightening task of a fastening component of a device such as a fluid control system that requires a large number of fastening components for assembly and has a narrow space for access to the fastening components, and capable of automatically detecting a tightening torque. The tool includes a torque sensor capable of detecting a tightening torque for tightening a fastening component acting on a bit. The torque sensor initiates measurement of the tightening torque when the tightening torque detected exceeds a set threshold value, completes measurement when the tightening torque detected falls below the set threshold value and a set time elapses, and outputs torque-related data formed on the basis of measurement data from measurement initiation to measurement completion and including a measurement time. The torque-related data includes a peak value of the measurement data.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: February 21, 2023
    Assignees: CONNECTEC JAPAN CORPORATION, FUJIKIN INCORPORATED
    Inventors: Kazutoshi Horikawa, Toru Nebashi, Hidekazu Machida, Nozomi Shimoishizaka, Akihiro Harada, Masahiko Ochiishi, Yoshiaki Yamato, Hiroki Karube, Mutsunori Koyomogi, Tsutomu Shinohara
  • Patent number: 11569014
    Abstract: A dust core includes large particles having an average particle size of 8-15 ?m, medium particles having an average particle size of 1-5 ?m, and small particles having an average particle size of 300-900 nm when a cross section thereof is observed. An area ratio occupied by the large particles is 50% to 90%, an area ratio occupied by the medium particles is 0% to 30%, and an area ratio occupied by the small particles is 5% to 30%, when a total area ratio occupied by the large particles, the medium particles and the small particles is 100% in the cross section. Vickers hardness (Hv) of the large particles, the medium particles and the small particles is 150-600 respectively. The small particles are alloy powder containing Fe and at least Si or N. The dust core may be included in an inductor element.
    Type: Grant
    Filed: May 17, 2019
    Date of Patent: January 31, 2023
    Assignee: TDK CORPORATION
    Inventors: Hideharu Moro, Akihiro Harada, Masahito Koeda
  • Publication number: 20230024126
    Abstract: A pipe joint includes first and second sleeves having fluid flow paths communicating with each other; an annular gasket interposed between abutting end surfaces of the sleeves; a male screw member having a through hole into which the first sleeve is inserted; and a female screw member having a through hole into which the second sleeve is inserted, the sleeves being joined by screwing the male screw member with the female screw member, wherein the pipe joint has a leak port opened at a portion of the outer peripheral surface of the male screw member not covered by the female screw member and communicates with a gap between the male screw member and the first sleeve to detect a leak fluid leaked from gaps between the sleeves and the gasket.
    Type: Application
    Filed: March 8, 2021
    Publication date: January 26, 2023
    Applicant: FUJIKIN INCORPORATED
    Inventors: Akihiro HARADA, Tomohiro NAKATA, Tsuneyuki OKABE, Yuya SHINDO