Patents by Inventor Seiya OZAWA

Seiya OZAWA 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: 11117588
    Abstract: When controlling a driving source torque in order to accelerate a driving wheel, a driving source torque controller performs shock suppression control of controlling the driving source torque based on an acquired driving source torque so that at least one of (i) an absolute value of relative speed between power transmission members on a power transmission path decreases when backlash between the power transmission members decreases or (ii) a transmission torque which is transmitted between the power transmission members on the power transmission path decreases when the backlash between the power transmission members is eliminated.
    Type: Grant
    Filed: January 10, 2020
    Date of Patent: September 14, 2021
    Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHA
    Inventors: Yuichiro Fukazawa, Naotsugu Kamiya, Masaki Shimazaki, Takahiro Ozawa, Seiya Uno, Takuya Okamoto, Mitsutoshi Koide, Yoshitsugu Kosugi
  • Publication number: 20210215240
    Abstract: A differential device includes: a differential case; a plurality of pinion shafts supported by the differential case and that is disposed on a first axis and a second axis orthogonal to the first axis; a first pinion gear and a second pinion gear that are each rotatably supported by the plurality of pinion shafts and that are disposed on the first axis, and a third pinion gear and a fourth pinion gear that are each rotatably supported by the plurality of pinion shafts and that are disposed on the second axis; and a first side gear and a second side gear that mesh with the first to fourth pinion gears and that are preloaded toward the first to fourth pinion gears. The number of teeth of the first side gear and second side gear is configured to be the 4N+2 in which N is an integer.
    Type: Application
    Filed: December 12, 2019
    Publication date: July 15, 2021
    Applicant: AISIN AW CO., LTD.
    Inventor: Seiya OZAWA
  • Publication number: 20210032756
    Abstract: A shaft member of an embodiment includes: a base material having a shaft shape and made of steel; a low phosphorus plating layer that is laminated on the base material, that includes phosphorus, and in which the phosphorus content is 4.5 mass % or less; and a base plating layer that is formed as an electrolytic nickel phosphorus plating layer or a high phosphorus plating layer laminated between the base material and the low phosphorus plating layer. It is thus possible to increase the strength of the shaft member and decrease the size of the shaft member.
    Type: Application
    Filed: December 27, 2018
    Publication date: February 4, 2021
    Applicants: AISIN AW CO., LTD., C. Uyemura & Co., Ltd.
    Inventors: Akihiko KITA, Seiya OZAWA, Takahiro MORI, Shoji IGUCHI, Osamu MATSUMOTO
  • Patent number: 10408336
    Abstract: A differential case has no hole other than two oil holes except for a pinion shaft hole and a pair of drive shaft holes and has an annular receiver attached thereto that has an inner periphery smaller than the outer periphery of side gear washers with respect to the rotation center of the rotation axis of drive shafts and that has an outer periphery located beyond the outermost edge of the oil holes with respect to the rotation center of the rotation axis. This controls the outflow of lubricating oil located radially outward of the inner periphery of the receiver, thus allowing the side gear washers to be supplied with lubricating oil, regardless of whether the differential case is rotating or stops rotating.
    Type: Grant
    Filed: February 18, 2016
    Date of Patent: September 10, 2019
    Assignee: AISIN AW CO., LTD.
    Inventors: Kaoru Nadayoshi, Nobutada Sugiura, Seiya Ozawa
  • Publication number: 20180038475
    Abstract: A differential case has no hole other than two oil holes except for a pinion shaft hole and a pair of drive shaft holes and has an annular receiver attached thereto that has an inner periphery smaller than the outer periphery of side gear washers with respect to the rotation center of the rotation axis of drive shafts and that has an outer periphery located beyond the outermost edge of the oil holes with respect to the rotation center of the rotation axis. This controls the outflow of lubricating oil located radially outward of the inner periphery of the receiver, thus allowing the side gear washers to be supplied with lubricating oil, regardless of whether the differential case is rotating or stops rotating.
    Type: Application
    Filed: February 18, 2016
    Publication date: February 8, 2018
    Applicant: AISIN AW CO. LTD.
    Inventors: Kaoru NADAYOSHI, Nobutada SUGIURA, Seiya OZAWA