Patents by Inventor Yuji Tsuzuki

Yuji Tsuzuki 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: 11049634
    Abstract: An electromagnetic actuator includes an electromagnetic coil, a yoke serving as a magnetic path of a magnetic flux of the electromagnetic coil, an armature configured to move in an axial direction while being attracted by the yoke by energization of the electromagnetic coil, and a housing that houses the armature. The armature and the housing are coupled to each other by an engagement structure in which protrusions provided on one of the members engage with engagement grooves formed in the other one of the members. At least a part of the engagement groove is inclined with respect to the axial direction. When the armature moves while being attracted by the yoke, the protrusions of the armature slide along the engagement grooves of the housing, and the armature turns relative to the housing along the inclination of the engagement grooves.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: June 29, 2021
    Assignee: JTEKT CORPORATION
    Inventors: Yuji Tsuzuki, Hiroshi Takuno
  • Publication number: 20200132180
    Abstract: A connection-disconnection device configured to switch between a connected state and a released state of a side gear and a coupling shaft, each supported by a case member so as to be rotatable relative to the case member. The connection-disconnection device has an input shaft coupled to the side gear so as not to be rotatable relative to the side gear, axial movement of the input shaft being restricted with respect to the side gear, a dog member coupled to the coupling shaft so as not to be rotatable relative to the coupling shaft and so as to be movable with respect to the coupling shaft in an axial direction, and a moving mechanism configured to move the dog member back and forth in the axial direction. Each of the input shaft and the dog member has an annular meshing portion that mesh with each other.
    Type: Application
    Filed: October 28, 2019
    Publication date: April 30, 2020
    Applicant: JTEKT Corporation
    Inventors: Yuji TSUZUKI, Hiroshi TAKUNO, Makoto NISHIJI, Ryohei SHIGETA, Yoshinao IWASE, Keita NOMURA
  • Publication number: 20190376565
    Abstract: A driving force distribution apparatus distributes and outputs, to a first clutch hub and a second clutch hub, a driving force input from a driving source. The driving force distribution apparatus includes a clutch housing to which a driving force is input, a first multi-disc clutch disposed between the clutch housing and the first clutch hub, and a second multi-disc clutch disposed between the clutch housing and the second clutch hub. A first pressing mechanism that presses the first multi-disc clutch includes an annular pressing portion disposed between a bottom wall portion of the clutch housing and the first multi-disc clutch, legs inserted in insertion holes formed in the bottom wall portion, and a lubricating oil introduction portion that guides lubricating oil supplied from the clearance between the first clutch hub and the bottom wall portion toward the first multi-disc clutch.
    Type: Application
    Filed: June 7, 2019
    Publication date: December 12, 2019
    Applicant: JTEKT Corporation
    Inventors: Mikiharu OYABU, Yoshinori Suzuki, Yuji Tsuzuki, Hiroyuki Inoue, Naoki Ootawara, Yuji Niwa, Takahiro Kubo, Kazuteru Shinagawa, Ryouichi Kubo
  • Publication number: 20190376566
    Abstract: A drive force distribution apparatus includes a clutch housing, first and second multi-plate clutches, and a center plate located between the first and second multi-plate clutches. The clutch housing includes a body member having a cylindrical portion and a bottom portion, and a tubular fixation member fixed to part of the cylindrical portion close to an open end. The cylindrical portion of the body member includes a first fit portion to which the first multi-plate clutch is fitted, a second fit portion to which the center plate is fitted, and a third fit portion to which the fixation member is fitted. The center plate is interposed between the fixation member and a step surface between the first fit portion and the second fit portion so as not to allow axial movement of the center plate relative to the body member.
    Type: Application
    Filed: June 5, 2019
    Publication date: December 12, 2019
    Applicant: JTEKT CORPORATION
    Inventors: Yuji TSUZUKI, Mikiharu OYABU, Yoshinori SUZUKI, Shun OHNO, Hiroyuki INOUE, Naoki OOTAWARA
  • Publication number: 20190309806
    Abstract: A driving force distribution apparatus includes a hollow shaft configured to rotate together with a ring gear, a first output shaft having a shaft portion inserted through the hollow shaft, a second output shaft arranged coaxially with the first output shaft, and a driving force transmission mechanism configured such that a driving force transmitted to the hollow shaft is transmitted to the first and second output shafts. A case member has a lubricating oil introduction chamber into which lubricating oil stirred up by the ring gear is introduced. The lubricating oil is supplied from the lubricating oil introduction chamber to the driving force transmission mechanism via a space between the hollow shaft and the shaft portion of the first output shaft. The lubricating oil introduction chamber is formed between the hollow shaft and a bearing mechanism that supports one end of the first output shaft.
    Type: Application
    Filed: April 4, 2019
    Publication date: October 10, 2019
    Applicant: JTEKT CORPORATION
    Inventors: Mikiharu Oyabu, Yoshinori Suzuki, Yuji Tsuzuki, Ryouichi Kubo, Naoki Ootawara, Kazuteru Shinagawa, Takahiro Kubo, Yuji Niwa
  • Publication number: 20190301582
    Abstract: A drive force distribution apparatus includes a hollow shaft that rotates as a unit with a ring gear, a tubular clutch housing that is not allowed to rotate relative to the hollow shaft, a first multi-plate clutch located between the clutch housing and a first clutch hub, a second multi-plate clutch located between the clutch housing and a second clutch hub, and a stopper ring that keeps the clutch housing from coming off the hollow shaft. The stopper ring threadedly engages with a screw hole that is formed in the hollow shaft. An outer engagement portion of the hollow shaft engages with an inner engagement portion of the clutch housing. At least part of the outer engagement portion is located in the outer circumference of the screw hole.
    Type: Application
    Filed: March 28, 2019
    Publication date: October 3, 2019
    Applicant: JTEKT CORPORATION
    Inventors: Yuji Tsuzuki, Mikiharu Oyabu, Ryouichi Kubo, Naoki Ootawara, Hiroyuki Inoue, Shun Ohno
  • Publication number: 20190148045
    Abstract: An electromagnetic actuator includes an electromagnetic coil, a yoke serving as a magnetic path of a magnetic flux of the electromagnetic coil, an armature configured to move in an axial direction while being attracted by the yoke by energization of the electromagnetic coil, and a housing that houses the armature. The armature and the housing are coupled to each other by an engagement structure in which protrusions provided on one of the members engage with engagement grooves formed in the other one of the members. At least a part of the engagement groove is inclined with respect to the axial direction. When the armature moves while being attracted by the yoke, the protrusions of the armature slide along the engagement grooves of the housing, and the armature turns relative to the housing along the inclination of the engagement grooves.
    Type: Application
    Filed: November 13, 2018
    Publication date: May 16, 2019
    Applicant: JTEKT CORPORATION
    Inventors: Yuji TSUZUKI, Hiroshi Takuno
  • Patent number: 9378545
    Abstract: The sanitary management system S includes a plurality of portable communication terminal devices 10, a manager terminal device 20 and a server device 40. The server device 40: (1) extracts two or more feature values related to the color of each pixel constituting a culture medium image; (2) executes statistical analysis based on distribution of pixels of the culture medium image by using a coordinate system prescribed by the extracted two or more feature values of each pixel, and calculates a linear function prescribing relation of the two or more feature values in each pixel; and (3) detects the colonies in the culture medium image based on the calculated linear function and counts the number of colonies.
    Type: Grant
    Filed: August 21, 2013
    Date of Patent: June 28, 2016
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Ryoma Bise, Yuji Tsuzuki, Masanori Kagota, Rui Saitou, Hitoshi Kyoutani
  • Publication number: 20150243014
    Abstract: The sanitary management system S includes a plurality of portable communication terminal devices 10, a manager terminal device 20 and a server device 40. The server device 40: (1) extracts two or more feature values related to the color of each pixel constituting a culture medium image; (2) executes statistical analysis based on distribution of pixels of the culture medium image by using a coordinate system prescribed by the extracted two or more feature values of each pixel, and calculates a linear function prescribing relation of the two or more feature values in each pixel; and (3) detects the colonies in the culture medium image based on the calculated linear function and counts the number of colonies.
    Type: Application
    Filed: August 21, 2013
    Publication date: August 27, 2015
    Inventors: Ryoma Bise, Yuji Tsuzuki, Masanori Kagota, Rui Saitou, Hitoshi Kyoutani
  • Publication number: 20150169762
    Abstract: The sanitary management system extracts food produced or inspected using a work line including one or more production process or inspection process as a specimen, and registers culture medium information obtained by a portable communication terminal device before and after culturing the extracted specimen to a server device in correspondence with work line related information related to the work line including information of sanitary management of the work line from which the specimen is extracted.
    Type: Application
    Filed: May 31, 2013
    Publication date: June 18, 2015
    Inventors: Masanori Kagota, Ryoma Bise, Yuji Tsuzuki, Rui Saitou, Hitoshi Kyoutani
  • Patent number: 8967350
    Abstract: A driving force transmission apparatus includes: a first cam mechanism that converts rotational force from a housing into first cam thrust force used as clutch force of a main clutch when the first cam mechanism is actuated through clutch action of a pilot clutch; and a second cam mechanism that is actuated prior to conversion of the rotational force into the first cam thrust force by the first cam mechanism, and that generates second cam thrust force for reducing an interval between clutch plates of the main clutch. The second cam mechanism includes an input cam member that rotates upon receiving rotational force used as actuating force of the input cam member from a cam actuating driving source, and an output cam member that generates the second cam thrust force between the output cam member and the input cam member and outputs the second cam thrust force.
    Type: Grant
    Filed: August 22, 2012
    Date of Patent: March 3, 2015
    Assignee: Jtekt Corporation
    Inventors: Noriyuki Fujii, Hiroshi Takuno, Kunihiko Suzuki, Yuji Tsuzuki
  • Publication number: 20130056321
    Abstract: A driving force transmission apparatus includes: a first cam mechanism that converts rotational force from a housing into first cam thrust force used as clutch force of a main clutch when the first cam mechanism is actuated through clutch action of a pilot clutch; and a second cam mechanism that is actuated prior to conversion of the rotational force into the first cam thrust force by the first cam mechanism, and that generates second cam thrust force for reducing an interval between clutch plates of the main clutch. The second cam mechanism includes an input cam member that rotates upon receiving rotational force used as actuating force of the input cam member from a cam actuating driving source, and an output cam member that generates the second cam thrust force between the output cam member and the input cam member and outputs the second cam thrust force.
    Type: Application
    Filed: August 22, 2012
    Publication date: March 7, 2013
    Applicant: JTEKT CORPORATION
    Inventors: Noriyuki FUJII, Hiroshi TAKUNO, Kunihiko SUZUKI, Yuji TSUZUKI
  • Patent number: 7384891
    Abstract: Provided is a thermally sensitive recording medium which exhibits high recording sensitivity, high heat resistance of ground color part and excellent preserving stability of images. A thermally sensitive recording medium, comprising a thermally sensitive recording layer containing a colorless or pale colored basic colorless dye and an organic color developing agent as main components on a substrate, wherein said thermally sensitive recording layer contains at least one compound represented by general formula (1) and contains at least one compound selected from the group consisting of 3-{[(phenylamino)carbonyl]amino}benzensulfoneamide represented by formula (2), an ureaurethane compound represented by formula (3) and a copolymer of glysidilmethacrylate and vinyl monomer (average molecular weight is 9000-11000, epoxy equivalent is 300-600 and melting point is 110° C. or less) as a stabilizer.
    Type: Grant
    Filed: June 27, 2003
    Date of Patent: June 10, 2008
    Assignee: Nippon Paper Industries Co., Ltd.
    Inventors: Junpei Natsui, Yuji Tsuzuki, Kaoru Hamada, Takashi Date
  • Patent number: 7378374
    Abstract: A thermally sensitive recording medium containing a thermally sensitive recording medium providing an undercoating layer containing a pigment and a binder as main components and a thermally sensitive recording layer containing a colorless or pale colored basic leuco dye and a color developing agent, which reacts with said basic leuco dye, as main components on a substrate, wherein the undercoating layer contains carboxymethyl cellulose having an etherification degree of from 0.55 to 0.75 and hydroxyethyl cellulose from the view point of high effectiveness.
    Type: Grant
    Filed: August 28, 2003
    Date of Patent: May 27, 2008
    Assignee: Nippon Paper Industries Co., Ltd.
    Inventors: Masayuki Watanabe, Kaoru Hamada, Junpei Natsui, Yuji Tsuzuki, Takashi Date
  • Publication number: 20070099798
    Abstract: The present invention provides a laser recording thermally sensitive recording medium comprising a thermally sensitive recording layer containing at least a photo absorbing material which absorbs laser ray and covert it to heat, an electron donning leuco dye and an electron accepting color developing agent on a substrate, wherein said electron donning leuco dye contains a leuco dye which absorbs the ray of visible range and a leuco dye having main wave length of absorption at the ray of 600 nm or longer.
    Type: Application
    Filed: November 2, 2006
    Publication date: May 3, 2007
    Inventors: Tomoaki Nagai, Takashi Date, Yuji Tsuzuki, Yoshihide Kimura
  • Publication number: 20060062106
    Abstract: A tilt control method and an optical disc apparatus can perform tilt control after quickly finding the tilt angle of a recording surface at any position in a radial direction of an optical disc corresponding to a rotational velocity of the optical disc during a read/write. A first overall angle of warping ?1 of a recording surface of an optical disc D at a first reference rotational velocity X1 is measured, and a second overall angle of warping ?2 of the recording surface of the optical disc D at a second reference rotational velocity X2 is also measured. An angle of warping increase/decrease coefficient K is calculated based on a ratio of a difference between the first reference rotational velocity X1 and the second reference rotational velocity X2 to a difference between the first overall angle of warping ?1 and the second overall angle of warping ?2.
    Type: Application
    Filed: August 30, 2005
    Publication date: March 23, 2006
    Applicant: Shinano Kenshi Kabushiki Kaisha
    Inventors: Yuji Tsuzuki, Kazuhiko Kobayashi
  • Publication number: 20060007765
    Abstract: A thermally sensitive recording medium comprising, a thermally sensitive recording medium providing an undercoating layer containing a pigment and a binder as main components and a thermally sensitive recording layer containing a colorless or pale colored basic leuco dye and a color developing agent, which reacts with said basic leuco dye, as main components on a substrate, wherein said undercoating layer contains carboxymethyl cellulose whose etherification degree is from 0.55 to 0.75. Causing the undercoating layer to further contain hydroxyethyl cellulose from the view point of high effectiveness.
    Type: Application
    Filed: August 28, 2003
    Publication date: January 12, 2006
    Inventors: Masayuki Watanabe, Kaoru Hamada, Junpei Natsui, Yuji Tsuzuki, Takashi Date
  • Publication number: 20050264644
    Abstract: Provided is a thermally sensitive recording medium which exhibits high recording sensitivity, high heat resistance of ground color part and excellent preserving stability of images. A thermally sensitive recording medium, comprising a thermally sensitive recording layer containing a colorless or pale colored basic colorless dye and an organic color developing agent as main components on a substrate, wherein said thermally sensitive recording layer contains at least one compound represented by general formula (1) and contains at least one compound selected from the group consisting of 3-{[(phenylamino)carbonyl]amino}benzensulfoneamide represented by formula (2), an ureaurethane compound represented by formula (3) and a copolymer of glysidilmethacrylate and vinyl monomer (average molecular weight is 9000-11000, epoxy equivalent is 300-600 and melting point is 110° C. or less) as a stabilizer.
    Type: Application
    Filed: June 27, 2003
    Publication date: December 1, 2005
    Inventors: Junpei Natsui, Yuji Tsuzuki, Kaoru Hamada, Takashi Date
  • Publication number: 20040171485
    Abstract: The present invention provides a laser recording thermally sensitive recording medium comprising a thermally sensitive recording layer containing at least a photo absorbing material which absorbs laser ray and covert it to heat, an electron donning leuco dye and an electron accepting color developing agent on a substrate, wherein said electron donning leuco dye contains a leuco dye which absorbs the ray of visible range and a leuco dye having main wave length of absorption at the ray of 600 nm or longer.
    Type: Application
    Filed: November 12, 2003
    Publication date: September 2, 2004
    Inventors: Tomoaki Nagai, Takashi Date, Yuji Tsuzuki, Yoshihide Kimura
  • Patent number: 6410479
    Abstract: A thermally sensitive recording medium which has good printability and surface glossness, by forming a glossing layer on a thermally sensitive recording layer on a substrate, and said glossing layer contains an inorganic pigment and a fixing composition which does not cause sticking at higher temperature than 200° C., and the surface glossiness of the glossing layer based on JIS-P-8142 in which angle of incidence and angle of reflect is 75 degree is bigger than 50%.
    Type: Grant
    Filed: October 28, 1999
    Date of Patent: June 25, 2002
    Assignee: Nippon Paper Industries Co Ltd
    Inventors: Tadakazu Fukuchi, Kaoru Hamada, Daisuke Imai, Hidenori Ogawa, Yuji Tsuzuki, Reiko Sato, Yoshihide Kimura