Patents by Inventor Shuichi Inamori

Shuichi Inamori 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).

  • Combination of piston rings, and combination structure of piston and piston rings
    Patent number: 12117084
    Abstract: A combination of piston rings assembled to a piston includes a first compression ring, a second compression ring, a third compression ring and an oil ring. When an axial width of the first compression ring is h1(1), an axial width of the second compression ring is h1(2), an axial width of the third compression ring is h1(3) and an axial width of the oil ring is h1(4), h1(1)?h1(2) and h1(1)?h1(3), and when h1(TOTAL)=h1(1)+h1(2)+h1(3)+h1(4), h1(TOTAL)?3.9 mm.
    Type: Grant
    Filed: July 30, 2021
    Date of Patent: October 15, 2024
    Assignee: TPR Co., Ltd.
    Inventors: Hiroyuki Nagakura, Shuichi Inamori, Akira Hikone
  • Combination of piston rings, and combination structure of piston and piston rings
    Patent number: 12000491
    Abstract: A combination of piston rings assembled to a piston includes a first compression ring, a second compression ring, a third compression ring and an oil ring. When an axial width of the first compression ring is h1(1), an axial width of the second compression ring is h1(2), an axial width of the third compression ring is h1(3) and an axial width of the oil ring is h1(4), h1(1)?h1(2) and h1(1)?h1(3), and when h1(TOTAL)=h1(1)+h1(2)+h1(3)+h1(4), h1(TOTAL)?3.1 mm.
    Type: Grant
    Filed: July 30, 2021
    Date of Patent: June 4, 2024
    Assignee: TPR Co., Ltd.
    Inventors: Hiroyuki Nagakura, Shuichi Inamori, Akira Hikone
  • Combination of Piston Rings, and Combination Structure of Piston and Piston Rings
    Publication number: 20230358313
    Abstract: A combination of piston rings assembled to a piston includes a first compression ring, a second compression ring, a third compression ring and an oil ring. When an axial width of the first compression ring is h1(1), an axial width of the second compression ring is h1(2), an axial width of the third compression ring is h1(3) and an axial width of the oil ring is h1(4), h1(1)?h1(2) and h1(1)?h1(3), and when h1(TOTAL)=h1(1)+h1(2)+h1(3)+h1(4), h1(TOTAL)?3.1 mm.
    Type: Application
    Filed: July 30, 2021
    Publication date: November 9, 2023
    Inventors: Hiroyuki Nagakura, Shuichi Inamori, Akira Hikone
  • Combination of Piston Rings, and Combination Structure of Piston and Piston Rings
    Publication number: 20230272854
    Abstract: A combination of piston rings assembled to a piston includes a first compression ring, a second compression ring, a third compression ring and an oil ring. When an axial width of the first compression ring is h1(1), an axial width of the second compression ring is h1(2), an axial width of the third compression ring is h1(3) and an axial width of the oil ring is h1(4), h1(1) ? h1(2) and h1(1) ? h1 (3), and when h1 (TOTAL) = h1 (1) + h1(2) + h1(3) + h1 (4), h1 (TOTAL) ? 3.9 mm.
    Type: Application
    Filed: July 30, 2021
    Publication date: August 31, 2023
    Inventors: Hiroyuki Nagakura, Shuichi Inamori, Akira Hikone