Patents by Inventor Rei Enokizono

Rei Enokizono 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).

  • Engine reciprocative rotating mechanism and method for manufacturing the same
    Patent number: 10760636
    Abstract: A second dynamic vibration absorber is higher in resonance frequency than a first dynamic vibration absorber. At least one of the resonance frequency of the first dynamic vibration absorber or the resonance frequency of the second dynamic vibration absorber is shifted from associated at least one of the first resonance frequency or the second resonance frequency such that a peak frequency of antiresonance occurring in a higher frequency region of the first dynamic vibration absorber than the resonance frequency of the first dynamic vibration absorber is substantially different from that of antiresonance occurring in a lower frequency region of the second dynamic vibration absorber than the resonance frequency of the second dynamic vibration absorber.
    Type: Grant
    Filed: October 19, 2018
    Date of Patent: September 1, 2020
    Assignee: Mazda Motor Corporation
    Inventors: Kiyonori Nagato, Takuya Kikuchi, Tsunehiro Mori, Koichi Hirata, Akira Sumitani, Rumiko Yamada, Toru Morishima, Rei Enokizono, Yuichi Shirasuna
  • Engine reciprocative rotating mechanism and method for manufacturing the same
    Patent number: 10612615
    Abstract: A second dynamic vibration absorber is higher in resonance frequency than a first dynamic vibration absorber. At least one of a ratio of a mass of a body of the first dynamic vibration absorber to a reciprocating inertial mass of the reciprocative rotation mechanism or a ratio of a mass of a body of the second dynamic vibration absorber to the reciprocating inertial mass of the reciprocative rotation mechanism is set such that a peak frequency of antiresonance occurring in a higher frequency region of the first dynamic vibration absorber than the resonance frequency of the first dynamic vibration absorber is substantially different from that of antiresonance occurring in a lower frequency region of the second dynamic vibration absorber than the resonance frequency of the second dynamic vibration absorber.
    Type: Grant
    Filed: October 19, 2018
    Date of Patent: April 7, 2020
    Assignee: Mazda Motor Corporation
    Inventors: Kiyonori Nagato, Toru Morishima, Takuya Kikuchi, Tsunehiro Mori, Rei Enokizono, Yuichi Shirasuna, Koichi Hirata, Akira Sumitani, Rumiko Yamada
  • ENGINE RECIPROCATIVE ROTATING MECHANISM AND METHOD FOR MANUFACTURING THE SAME
    Publication number: 20190120317
    Abstract: A second dynamic vibration absorber is higher in resonance frequency than a first dynamic vibration absorber. At least one of the resonance frequency of the first dynamic vibration absorber or the resonance frequency of the second dynamic vibration absorber is shifted from associated at least one of the first resonance frequency or the second resonance frequency such that a peak frequency of antiresonance occurring in a higher frequency region of the first dynamic vibration absorber than the resonance frequency of the first dynamic vibration absorber is substantially different from that of antiresonance occurring in a lower frequency region of the second dynamic vibration absorber than the resonance frequency of the second dynamic vibration absorber.
    Type: Application
    Filed: October 19, 2018
    Publication date: April 25, 2019
    Inventors: Kiyonori Nagato, Takuya Kikuchi, Tsunehiro Mori, Koichi Hirata, Akira Sumitani, Rumiko Yamada, Toru Morishima, Rei Enokizono, Yuichi Shirasuna
  • ENGINE RECIPROCATIVE ROTATING MECHANISM AND METHOD FOR MANUFACTURING THE SAME
    Publication number: 20190120318
    Abstract: A second dynamic vibration absorber is higher in resonance frequency than a first dynamic vibration absorber. At least one of a ratio of a mass of a body of the first dynamic vibration absorber to a reciprocating inertial mass of the reciprocative rotation mechanism or a ratio of a mass of a body of the second dynamic vibration absorber to the reciprocating inertial mass of the reciprocative rotation mechanism is set such that a peak frequency of antiresonance occurring in a higher frequency region of the first dynamic vibration absorber than the resonance frequency of the first dynamic vibration absorber is substantially different from that of antiresonance occurring in a lower frequency region of the second dynamic vibration absorber than the resonance frequency of the second dynamic vibration absorber.
    Type: Application
    Filed: October 19, 2018
    Publication date: April 25, 2019
    Inventors: Kiyonori Nagato, Toru Morishima, Takuya Kikuchi, Tsunehiro Mori, Rei Enokizono, Yuichi Shirasuna, Koichi Hirata, Akira Sumitani, Rumiko Yamada