Patents by Inventor Kensuke Sato

Kensuke Sato 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: 11332817
    Abstract: A machine component includes a core made up of a steel for machine structural use, and a medium carbon-containing layer and a high carbon-containing layer formed of the steel for machine structural use, the medium carbon-containing layer covering the core, the high carbon-containing layer covering the medium carbon-containing layer and having a carbon concentration of 0.8-1.5%. The high carbon-containing layer is made up of a martensitic structure having carbides dispersed therein and a residual austenitic structure, wherein spheroidized carbides with an aspect ratio of 1.5 or less constitute 90% or more of a total number of the carbides, and the number of spheroidized carbides on prior austenite grain boundaries is 40% or less of the total number of the carbides.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: May 17, 2022
    Assignee: KOMATSU LTD.
    Inventors: Kensuke Sato, Koji Yamamoto, Yusuke Hiratsuka, Kazuya Hashimoto
  • Patent number: 11326220
    Abstract: A method for producing a machine component excellent in pitting resistance characteristics and toughness includes a carburizing step, performed on a steel material containing 0.13-0.30% C and 0.90-2.00% Cr in mass % and at least one of Si, Mn, Ni, Mo, Nb, V, Ti, B, Al, and N, balance Fe and unavoidable impurities; heating the material to 850-1030° C. to attain carbon concentration in a surface of 0.8-1.5%; cooling the material at an average rate of 5° C./sec or lower from a temperature higher than the Acm point of a surface layer to a cooling end temperature that is at least 50° C. lower than the A1 point to cause the surface layer to have a pearlite or bainite structure with dispersion; spheroidizing annealing at a temperature not higher than the Acm point at the surface layer; heating the material to not higher than the Acm point at the surface layer; and performing tempering.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: May 10, 2022
    Assignee: KOMATSU LTD.
    Inventors: Kensuke Sato, Koji Yamamoto, Yusuke Hiratsuka, Kazuya Hashimoto
  • Publication number: 20210032716
    Abstract: A method for producing a machine component excellent in pitting resistance characteristics and toughness includes a carburizing step, performed on a steel material containing 0.13-0.30% C and 0.90-2.00% Cr in mass % and at least one of Si, Mn, Ni, Mo, Nb, V, Ti, B, Al, and N, balance Fe and unavoidable impurities; heating the material to 850-1030° C. to attain carbon concentration in a surface of 0.8-1.5%; cooling the material at an average rate of 5° C./sec or lower from a temperature higher than the Acm point of a surface layer to a cooling end temperature that is at least 50° C. lower than the A1 point to cause the surface layer to have a pearlite or bainite structure with dispersion; spheroidizing annealing at a temperature not higher than the Acm point at the surface layer; heating the material to not higher than the Acm point at the surface layer; and performing tempering.
    Type: Application
    Filed: May 10, 2019
    Publication date: February 4, 2021
    Applicant: KOMATSU LTD.
    Inventors: Kensuke SATO, Koji YAMAMOTO, Yusuke HIRATSUKA, Kazuya HASHIMOTO
  • Publication number: 20210032737
    Abstract: A machine component includes a core made up of a steel for machine structural use, and a medium carbon-containing layer and a high carbon-containing layer formed of the steel for machine structural use, the medium carbon-containing layer covering the core, the high carbon-containing layer covering the medium carbon-containing layer and having a carbon concentration of 0.8-1.5%. The high carbon-containing layer is made up of a martensitic structure having carbides dispersed therein and a residual austenitic structure, wherein spheroidized carbides with an aspect ratio of 1.5 or less constitute 90% or more of a total number of the carbides, and the number of spheroidized carbides on prior austenite grain boundaries is 40% or less of the total number of the carbides.
    Type: Application
    Filed: May 10, 2019
    Publication date: February 4, 2021
    Applicant: KOMATSU LTD.
    Inventors: Kensuke SATO, Koji YAMAMOTO, Yusuke HIRATSUKA, Kazuya HASHIMOTO
  • Patent number: 10877434
    Abstract: A cartridge includes a coupling member, a transmitted member, and a rotary member. The transmitted member includes an accommodating portion configured to accommodate the coupling member, and a protruded portion integrally formed with an inner wall of the accommodating portion and protruding from the inner wall toward an inside of the accommodating portion. The coupling member includes a free end portion having a rotational force receiving portion that receives a rotational force, a connected portion connected to the transmitted member in such a manner that at least a part of the connected portion can be accommodated in the accommodating portion, and a recessed portion provided at the connected portion so that the protruded portion can enter. An inclination angle of a rotation axis of the coupling member relative to a rotation axis of the transmitted member is variable.
    Type: Grant
    Filed: September 11, 2019
    Date of Patent: December 29, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kensuke Sato, Tetsushi Uneme, Toshiki Fujino
  • Publication number: 20200004199
    Abstract: A cartridge includes a coupling member, a transmitted member, and a rotary member. The transmitted member includes an accommodating portion configured to accommodate the coupling member, and a protruded portion integrally formed with an inner wall of the accommodating portion and protruding from the inner wall toward an inside of the accommodating portion. The coupling member includes a free end portion having a rotational force receiving portion that receives a rotational force, a connected portion connected to the transmitted member in such a manner that at least a part of the connected portion can be accommodated in the accommodating portion, and a recessed portion provided at the connected portion so that the protruded portion can enter. An inclination angle of a rotation axis of the coupling member relative to a rotation axis of the transmitted member is variable.
    Type: Application
    Filed: September 11, 2019
    Publication date: January 2, 2020
    Inventors: Kensuke Sato, Tetsushi Uneme, Toshiki Fujino
  • Patent number: 10444702
    Abstract: A cartridge includes a coupling member, a transmitted member, and a rotary member. The transmitted member includes an accommodating portion configured to accommodate the coupling member, and a protruded portion integrally formed with an inner wall of the accommodating portion and protruding from the inner wall toward an inside of the accommodating portion. The coupling member includes a free end portion having a rotational force receiving portion that receives a rotational force, a connected portion connected to the transmitted member in such a manner that at least a part of the connected portion can be accommodated in the accommodating portion, and a recessed portion provided at the connected portion so that the protruded portion can enter. An inclination angle of a rotation axis of the coupling member relative to a rotation axis of the transmitted member is variable.
    Type: Grant
    Filed: October 2, 2018
    Date of Patent: October 15, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kensuke Sato, Tetsushi Uneme, Toshiki Fujino
  • Publication number: 20190033778
    Abstract: A cartridge includes a coupling member, a transmitted member, and a rotary member. The transmitted member includes an accommodating portion configured to accommodate the coupling member, and a protruded portion integrally formed with an inner wall of the accommodating portion and protruding from the inner wall toward an inside of the accommodating portion. The coupling member includes a free end portion having a rotational force receiving portion that receives a rotational force, a connected portion connected to the transmitted member in such a manner that at least a part of the connected portion can be accommodated in the accommodating portion, and a recessed portion provided at the connected portion so that the protruded portion can enter. An inclination angle of a rotation axis of the coupling member relative to a rotation axis of the transmitted member is variable.
    Type: Application
    Filed: October 2, 2018
    Publication date: January 31, 2019
    Inventors: Kensuke Sato, Tetsushi Uneme, Toshiki Fujino
  • Patent number: 10132058
    Abstract: The purpose of the present invention is to provide a cooling fan control device for a construction machine, whereby the effects of heat caused by warm-up operation can be suppressed. This cooling fan control device is equipped with a control unit (10a) that controls the rotational speed of a cooling fan (21) in accordance with a main pump discharge pressure (P) detected by a main pump discharge pressure sensor (25), an engine cooling water temperature (Tw) detected by an engine cooling water temperature sensor (26), a hydraulic oil temperature (To) detected by a hydraulic oil temperature sensor (27), and an engine rotational speed (E) detected by an engine rotational speed sensor (28). The cooling fan (21) is rotated at the rotational speed controlled by the control unit (10a), thereby sending the generated cooling air to an oil cooler (19) and a control valve (13).
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: November 20, 2018
    Assignee: Hitachi Construction Machinery Co., Ltd.
    Inventors: Mitsuhiko Kanehama, Kensuke Sato, Tsuyoshi Nakamura
  • Patent number: 10120332
    Abstract: A cartridge includes a coupling member, a transmitted member, and a rotary member. The transmitted member includes an accommodating portion configured to accommodate the coupling member, and a protruded portion integrally formed with an inner wall of the accommodating portion and protruding from the inner wall toward an inside of the accommodating portion. The coupling member includes a free end portion having a rotational force receiving portion that receives a rotational force, a connected portion connected to the transmitted member in such a manner that at least a part of the connected portion can be accommodated in the accommodating portion, and a recessed portion provided at the connected portion so that the protruded portion can enter. An inclination angle of a rotation axis of the coupling member relative to a rotation axis of the transmitted member is variable.
    Type: Grant
    Filed: May 9, 2017
    Date of Patent: November 6, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kensuke Sato, Tetsushi Uneme, Toshiki Fujino
  • Patent number: 9961567
    Abstract: A wireless communication device according to the present invention includes a storage unit, a delivery unit, and a control unit. The storage unit holds identification information indicating the wireless communication device, and related information related to the identification information. The delivery unit delivers the identification information and the related information in such a manner that the identification information and the related information are included in a wireless beacon. The control unit establishes a wireless communication upon acquisition of a connection request signal based on the delivered identification information.
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: May 1, 2018
    Assignee: NEC PLATFORMS, LTD.
    Inventor: Kensuke Sato
  • Patent number: 9890518
    Abstract: During boom-midair lowering operation in which a front work implement 130 can be turned under the self-weight of a boom 131, a hydraulic pump/motor 7 is operated as a motor to operate a generator/electric motor 10 as a generator. Power generation operation is performed by the hydraulic fluid discharged from a bottom-side chamber 5b of a boom cylinder 5 to recover positional energy. During jack-up in which the front work implement 130 cannot be turned under the self-weight of the boom 131, the generator/electric motor 10 is operated as an electric motor to operate the hydraulic pump/motor 7 as a pump. The jack-up is performed by supplying the hydraulic fluid from the bottom-side chamber 5b to rod-side chamber 5a of the boom cylinder 5 without supplying the hydraulic fluid from the main pump 2 to the rod-side chamber 5a of the boom cylinder 5.
    Type: Grant
    Filed: October 15, 2013
    Date of Patent: February 13, 2018
    Assignee: HITACHI CONSTRUCTION MAHINERY CO., LTD.
    Inventors: Kensuke Sato, Tsuyoshi Nakamura, Kouji Ishikawa
  • Patent number: 9885974
    Abstract: A developing cartridge includes a developing roller 210d that develops, by way of a developer, an electrostatic latent image that is formed on an image bearing member 207; a developer regulating member that regulates the thickness of a developer carried on the developing roller 210d; and a frame 214a that rotatably supports the developing roller 210d and supports the developer regulating member. The frame 214a has a developing roller support section 214a1 that rotatably supports an outer peripheral face 210d6 of at least one end of the developing roller 210d. The developing roller support section 214a1 has a clearance at a position that, when viewed in the axial direction of the developing roller 210d, overlaps a contact region at which the developing roller 210d is in contact with the image bearing member 207.
    Type: Grant
    Filed: December 7, 2016
    Date of Patent: February 6, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kensuke Sato, Masaaki Sato
  • Publication number: 20170242393
    Abstract: A cartridge includes a coupling member, a transmitted member, and a rotary member. The transmitted member includes an accommodating portion configured to accommodate the coupling member, and a protruded portion integrally formed with an inner wall of the accommodating portion and protruding from the inner wall toward an inside of the accommodating portion. The coupling member includes a free end portion having a rotational force receiving portion that receives a rotational force, a connected portion connected to the transmitted member in such a manner that at least a part of the connected portion can be accommodated in the accommodating portion, and a recessed portion provided at the connected portion so that the protruded portion can enter. An inclination angle of a rotation axis of the coupling member relative to a rotation axis of the transmitted member is variable.
    Type: Application
    Filed: May 9, 2017
    Publication date: August 24, 2017
    Inventors: Kensuke Sato, Tetsushi Uneme, Toshiki Fujino
  • Patent number: 9678457
    Abstract: A cartridge includes a coupling member, a transmitted member, and a rotary member. The transmitted member includes an accommodating portion configured to accommodate the coupling member, and a protruded portion integrally formed with an inner wall of the accommodating portion and protruding from the inner wall toward an inside of the accommodating portion. The coupling member includes a free end portion having a rotational force receiving portion that receives a rotational force, a connected portion connected to the transmitted member in such a manner that at least a part of the connected portion can be accommodated in the accommodating portion, and a recessed portion provided at the connected portion so that the protruded portion can enter. An inclination angle of a rotation axis of the coupling member relative to a rotation axis of the transmitted member is variable.
    Type: Grant
    Filed: February 24, 2016
    Date of Patent: June 13, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kensuke Sato, Tetsushi Uneme, Toshiki Fujino
  • Publication number: 20170090343
    Abstract: A developing cartridge includes a developing roller 210d that develops, by way of a developer, an electrostatic latent image that is formed on an image bearing member 207; a developer regulating member that regulates the thickness of a developer carried on the developing roller 210d; and a frame 214a that rotatably supports the developing roller 210d and supports the developer regulating member. The frame 214a has a developing roller support section 214a1 that rotatably supports an outer peripheral face 210d6 of at least one end of the developing roller 210d. The developing roller support section 214a1 has a clearance at a position that, when viewed in the axial direction of the developing roller 210d, overlaps a contact region at which the developing roller 210d is in contact with the image bearing member 207.
    Type: Application
    Filed: December 7, 2016
    Publication date: March 30, 2017
    Inventors: Kensuke Sato, Masaaki Sato
  • Patent number: D843443
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: March 19, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tachio Kawai, Masaaki Sato, Hiroyuki Munetsugu, Koji Wada, Yosuke Kashiide, Naoki Hayashi, Takashi Kimura, Goshi Ozaki, Yu Fukasawa, Masanori Kudo, Hideki Nagae, Kensuke Sato
  • Patent number: D872796
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: January 14, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masaaki Sato, Yosuke Kashiide, Tetsushi Uneme, Kensuke Sato, Toshiki Fujino
  • Patent number: D873337
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: January 21, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masaaki Sato, Hiroyuki Munetsugu, Yosuke Kashiide, Koji Wada, Masanori Kudo, Goshi Ozaki, Kensuke Sato, Yukio Kubo
  • Patent number: D873338
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: January 21, 2020
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masaaki Sato, Hiroyuki Munetsugu, Yosuke Kashiide, Koji Wada, Masanori Kudo, Goshi Ozaki, Kensuke Sato, Yukio Kubo