Patents by Inventor Akihiro Yamamoto

Akihiro Yamamoto 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: 20250115046
    Abstract: A liquid ejection apparatus ejecting an aqueous ink and an aqueous reaction liquid containing a reactant that reacts with the aqueous ink to record an image on a record medium, wherein the liquid ejection apparatus includes an element substrate including: a plurality of individual channels having an ejection port configured to eject the liquid, a pressure chamber configured to supply the liquid to the ejection port, and an energy-generating element configured to generate energy to eject the liquid; an upstream channel configured to supply the liquid to the plurality of individual channels; and a downstream channel for outflow of the liquid from the plurality of individual channels, the ejection port has a protrusion protruding toward a center of the ejection port.
    Type: Application
    Filed: October 3, 2024
    Publication date: April 10, 2025
    Inventors: YUGO YAMAMOTO, FUMI TANAKA, MIKIO SANADA, SHOICHI TAKEDA, YOSHIYUKI KANEKO, KOICHI ISHIDA, KYOSUKE TODA, SHUZO IWANAGA, SHINGO OKUSHIMA, YUMI KOMAMIYA, YUJI NUKUI, TAKATSUGU MORIYA, YOSHIHIRO HAMADA, AKIHIRO SUZUKI, KEIJI TOMIZAWA
  • Publication number: 20250100610
    Abstract: A vehicle steering handle, comprising: a steering wheel that is an isosceles trapezoidal annular body composed of an upper bottom portion, a lower bottom portion longer than the upper bottom portion, and left and right leg portions; an accelerator lever attached to the right leg portion; and a brake lever attached to the left leg portion and the right leg portion.
    Type: Application
    Filed: September 18, 2024
    Publication date: March 27, 2025
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Keita MORITSU, Mari SATO, Yoshito WATANABE, Yutaro YAMAMOTO, Ryutaro MISUMI, Kazuyoshi SHIRAI, Takatoshi OHYA, Kohei NOHARA, Yasuhiko FUKUZUMI, Ryunosuke YAMADA, Sei KOBAYASHI, Akihiro SUZUKI, Go TANAKA, Seiji TORIU, Minoru TAKAYAMA, Hiromasa OKADOME, Kazunari ABE, Yuta KAMIYA
  • Publication number: 20250084901
    Abstract: Provided are a friction engagement device connected by pressing a friction plate and a separate plate against each other and disconnected by releasing the force pressing them; a rotation transmission state switching device having at least a free mode in which rotation of a first member relative to a second member is allowed and a lock mode in which rotation of the first member relative to the second member is prevented; and a control device having a function to switch the rotation transmission state switching device to a lock mode while maintaining the friction engagement device in a connected state and a function to switch to a state where the friction engagement device is disconnected and the rotation transmission state switching device is in a free mode.
    Type: Application
    Filed: September 28, 2022
    Publication date: March 13, 2025
    Applicant: NSK Ltd.
    Inventors: Akihiro YAMAMOTO, Hirotaka KISHIDA
  • Publication number: 20250071894
    Abstract: The printed wiring board substrate includes an insulating layer, a first copper foil, and a second copper foil. The insulating layer has a first main surface and a second main surface opposite to the first main surface. The insulating layer includes a plurality of polyimide layers and a plurality of fluororesin layers. The total number of the plurality of polyimide layers and the plurality of fluororesin layers is 5 or more. Each of the plurality of polyimide layers and each of the plurality of fluororesin layers are alternately stacked along a thickness direction of the insulating layer. One of the plurality of fluororesin layers constitutes a first outermost layer which is an outermost layer on the side of the first main surface. Another one of the plurality of fluororesin layers constitutes a second outermost layer which is an outermost layer on the side of the second main surface.
    Type: Application
    Filed: March 20, 2023
    Publication date: February 27, 2025
    Applicants: SUMITOMO ELECTRIC INDUSTRIES, LTD., SUMITOMO ELECTRIC PRINTED CIRCUITS, INC.
    Inventors: Hiroshi UEDA, Ichiro KUWAYAMA, Suguru YAMAGISHI, Toshiki IWASAKI, Akihiro YANO, Takuma YAMAMOTO
  • Patent number: 12214845
    Abstract: An electric device of a human-powered vehicle comprises electronic controller circuitry. The electronic controller circuitry is configured to obtain at least one of chain guide information and sprocket information. The chain guide information is indicative of at least one chain guide. The sprocket information is indicative of at least one sprocket assembly. The electronic controller circuitry is configured to set one of at least two pieces of gear changing information as setting information based on the at least one of the chain guide information and the sprocket information. The electronic controller circuitry is configured to perform a gear shift control based on the setting information. Each of the at least two pieces of the gear changing information including at least two stop positions of a chain guide respectively corresponding to at least two sprockets of a sprocket assembly.
    Type: Grant
    Filed: October 18, 2023
    Date of Patent: February 4, 2025
    Assignee: SHIMANO INC.
    Inventors: Shunsuke Yamamoto, Yu Goto, Akihiro Nozaki
  • Publication number: 20240386809
    Abstract: An information processing apparatus (1) included in a welding training system includes a distance determination unit (13) configured to determine a distance between a tip of a welding rod object used for a welding operation and a parent material object based on a distance between the parent material object and a dot object used for distance determination, the dot object being located at the tip, a welding processing performing unit (14) configured to perform welding processing in virtual space when the determined distance is less than or equal to a predetermined threshold value, a welding rod length corrector (15) configured to perform, when the welding processing is performed, a correction such that an axial length of the welding rod object is shortened, a distance determination object mover (17) configured to move the dot object to the tip of the welding rod object after the correction, and a display controller (19) configured to cause a display to display an image including the welding rod object after the
    Type: Application
    Filed: January 12, 2022
    Publication date: November 21, 2024
    Inventors: Yuichiro Aoyama, Yasuo Oomori, Junichi Oono, Hideaki Ogura, Hiroaki Taniyama, Akihiro Yamamoto, Hitoshi Kawasaki
  • Publication number: 20240383142
    Abstract: A robot system includes: a first link that is a part of a robotic arm; a first motor that moves according to a rotation of the first link; a first sensor having a fixed location with respect to the first motor; and a memory configured to store first position information indicating a relative position of the first sensor with respect to a first reference position of the first motor.
    Type: Application
    Filed: July 30, 2024
    Publication date: November 21, 2024
    Inventors: Akihiro YAMAMOTO, Shingo ANDO, Masaru ADACHI, Keita SHIMAMOTO, Jiro MURAOKA
  • Publication number: 20240379025
    Abstract: An information processing apparatus (1) included in a welding training system includes a transmittance adjuster (14) capable of adjusting a transmittance of a window of a welding helmet in virtual space in multiple grades, and a display controller (17) configured to cause a display of an HMD (2) to display a situation of a welding operation in the virtual space at an illuminance corresponding to the adjusted transmittance. The transmittance adjuster (14) adjusts the transmittance based on a skill level of a trainee determined by a skill level determination unit (13).
    Type: Application
    Filed: January 12, 2022
    Publication date: November 14, 2024
    Inventors: Yuichiro Aoyama, Yasuo Oomori, Junichi Oono, Hideaki Ogura, Hiroaki Taniyama, Akihiro Yamamoto, Hitoshi Kawasaki
  • Publication number: 20240301882
    Abstract: Provided is a compressor including a compressor unit that includes a compressor body that compresses gas and a motor that drives the compressor body, and a controller that carries out the operation number control for a plurality of the compressor units. The plurality of compressor units are connected to the same pipe. The controller causes, while continuing the operation number control for the compressor units that are a target of the operation number control, the compressor unit excluded from the target of the operation number control to start.
    Type: Application
    Filed: January 14, 2022
    Publication date: September 12, 2024
    Applicant: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Akihiro YAMAMOTO, Yoshiyuki KANEMOTO, Zhijia REN
  • Publication number: 20240270190
    Abstract: A vehicle front structure includes: an upper beam to which a headlight is fixed; a bracket installed side by side with the upper beam and having a front end in a vehicle front-rear direction thereof fixed to a bulkhead and a rear end in the vehicle front-rear direction thereof fixed to a lower member; a shock absorbing bracket arranged so as to be held between the upper beam and the bracket; and an airbag sensor arranged in vicinity to the shock absorbing bracket.
    Type: Application
    Filed: February 13, 2024
    Publication date: August 15, 2024
    Inventors: Akihiro YAMAMOTO, Hiroyuki ITO
  • Publication number: 20240270317
    Abstract: A vehicle front structure includes: an upper beam to which a headlight is fixed; a bracket installed side by side with the upper beam and formed to extend outward in a vehicle width direction from one end thereof fixed to a bulkhead of a vehicle, curve rearward at a point halfway to an outer end in the vehicle width direction of the vehicle, and extend rearward to the other end thereof fixed to a lower member of the vehicle; and an airbag sensor provided on the bracket.
    Type: Application
    Filed: February 13, 2024
    Publication date: August 15, 2024
    Inventors: Akihiro YAMAMOTO, Hiroyuki ITO
  • Patent number: 12044232
    Abstract: There are provided an operation number control device and a method for controlling the same that can level the operation times of the fluid machines, which are connected to the operation number control device. A fluid machine system comprises a plurality of fluid machines, and an operation number control device capable of individually controlling start and stop of the fluid machines. The operation number control device sets a continuous operation time for each of the fluid machines based on total operation times of the fluid machine and other fluid machines. When among fluid machines in operation, there is a fluid machine for which the continuous operation time set for the fluid machine has elapsed and there is a fluid machine at stop, the operation number control device causes the fluid machine at stop to start and causes the fluid machine to stop.
    Type: Grant
    Filed: November 29, 2019
    Date of Patent: July 23, 2024
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Norio Aoyagi, Hiroaki Saito, Fuminori Kato, Daichi Oka, Akihiro Yamamoto
  • Patent number: 12018352
    Abstract: This hot rolled steel sheet is a hot rolled steel sheet including a base steel sheet and a scale formed on a surface of the base steel sheet, in which the base steel sheet has a predetermined chemical composition, the scale has a layer structure composed of wustite, magnetite, and hematite in order from the base steel sheet side or a layer structure composed of the wustite and the magnetite in order from the base steel sheet side, and, when a thickness of the scale is represented by s, a thickness of the hematite is represented by h, and a thickness of the magnetite is represented by m, the s, the h, and the m satisfy formula (1) and formula (2). (h+m)/s<0.
    Type: Grant
    Filed: June 15, 2020
    Date of Patent: June 25, 2024
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Mutsumi Sakakibara, Akifumi Sakakibara, Tetsu Asato, Akihiro Yamamoto
  • Patent number: 11982340
    Abstract: A two-speed transmission includes: an input member; an output member; a rotating member; a first engaging device switching engagement between first and second friction plates to switch the input member and the rotating member to an integrally rotating state or a relatively rotating state; a second engaging device switching the rotating member to a rotatable or non-rotatable state; an elastic biasing means applying a force pressing the first and second friction plates; a pressing device releasing the pressing force; a first bearing between the elastic biasing means and the pressing device; a second bearing between the rotating member and the pressing device or the fixed portion; and a planetary speed reduction mechanism having a sun element connected to the input member or the rotating member, a carrier connected to one of the input member or the rotating member and the output member, and a ring element connected to the other.
    Type: Grant
    Filed: August 27, 2021
    Date of Patent: May 14, 2024
    Assignee: NSK LTD.
    Inventors: Akihiro Yamamoto, Hirotaka Kishida
  • Patent number: 11976648
    Abstract: Even when abnormal heat generation occurs during operation in a state where the temperature of a compressor is not increased, abnormality cannot be detected. A fluid machine includes a fluid machine body; a motor that drives the fluid machine body; a temperature sensor that measures a temperature of the fluid machine body; and a control unit that controls the fluid machine body. The control unit changes a temperature threshold value based on at least one of a pressure of a fluid discharged by the fluid machine body and a frequency of a voltage input into the motor, and issues a notification when the temperature of the compressor body measured by the temperature sensor exceeds the temperature threshold value.
    Type: Grant
    Filed: November 28, 2019
    Date of Patent: May 7, 2024
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Akihiro Yamamoto, Yoshiyuki Kanemoto, Daichi Oka
  • Publication number: 20240096235
    Abstract: An information processing apparatus (1) included in a welding training system includes a transmittance adjuster (14) capable of adjusting a transmittance of a window of a welding helmet in virtual space in multiple grades, and a display controller (17) configured to cause a display of an HMD (2) to display a situation of a welding operation in the virtual space at an illuminance corresponding to the adjusted transmittance. The transmittance adjuster (14) adjusts the transmittance based on a skill level of a trainee determined by a skill level determination unit (13).
    Type: Application
    Filed: January 12, 2022
    Publication date: March 21, 2024
    Inventors: Yuichiro Aoyama, Yasuo Oomori, Junichi Oono, Hideaki Ogura, Hiroaki Taniyama, Akihiro Yamamoto, Hitoshi Kawasaki
  • Patent number: 11937410
    Abstract: A package-type fluid machine includes a compressor unit including a compression portion that compresses a fluid, a motor that drives the compression portion, and a cooling fan that is driven by the motor; a machine chamber in which the compressor unit is disposed; an inverter chamber which is adjacent to the machine chamber and in which an inverter is disposed; a partition wall that partitions off the machine chamber from the inverter chamber and has an opening; and an inverter intake port that is disposed in the inverter chamber to take in a cooling gas. The cooling fan is disposed on a side of the machine chamber, the opening being located on the side. The cooling fan is driven to cause the cooling gas to flow from the inverter intake port to the opening to cool the inverter.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: March 19, 2024
    Assignee: Hitachi Industrial Equipment Systems Co., Ltd.
    Inventors: Fuminori Kato, Yoshiyuki Kanemoto, Hiroaki Saito, Daichi Oka, Akihiro Yamamoto
  • Patent number: 11867242
    Abstract: A power transmission path switching device has a friction engaging device; a rotation transmission state switching device comprising a first member and a second member arranged coaxial with each other and having: a free mode and/or a one-way clutch mode allowing rotation of the first member with respect to the second member, and a lock mode preventing rotation of the first member with respect to the second member; and a control device that, when connecting the friction engaging device and setting the rotation transmission state switching device to the lock mode, has a function of connecting the friction engaging device, and then while maintaining the friction engaging device in a connected state, switches the rotation transmission state switching device to the lock mode.
    Type: Grant
    Filed: June 29, 2021
    Date of Patent: January 9, 2024
    Assignee: NSK LTD.
    Inventors: Akihiro Yamamoto, Hirotaka Kishida
  • Patent number: 11852228
    Abstract: A differential device includes: an input member; a case member arranged coaxially with the input member; a one-way clutch arranged between the input member and the case member and transmitting torque therebetween only when the input member attempts to rotate in a normal rotation direction; a pinion gear supported by the case member to rotate about the axis perpendicular to the center axis of the case member; and a pair of side gears supported coaxially with the input member to rotate relative to the input member and the case member and meshing with the pinion gear.
    Type: Grant
    Filed: March 14, 2022
    Date of Patent: December 26, 2023
    Assignee: NSK LTD.
    Inventors: Akihiro Yamamoto, Eiji Inoue
  • Publication number: 20230366451
    Abstract: A two-speed transmission includes: an input member; an output member; a rotating member; a first engaging device switching engagement between first and second friction plates to switch the input member and the rotating member to an integrally rotating state or a relatively rotating state; a second engaging device switching the rotating member to a rotatable or non-rotatable state; an elastic biasing means applying a force pressing the first and second friction plates; a pressing device releasing the pressing force; a first bearing between the elastic biasing means and the pressing device; a second bearing between the rotating member and the pressing device or the fixed portion; and a planetary speed reduction mechanism having a sun element connected to the input member or the rotating member, a carrier connected to one of the input member or the rotating member and the output member, and a ring element connected to the other.
    Type: Application
    Filed: August 27, 2021
    Publication date: November 16, 2023
    Applicant: NSK Ltd.
    Inventors: Akihiro YAMAMOTO, Hirotaka KISHIDA