Patents by Inventor Tatsuya KATAYAMA

Tatsuya KATAYAMA 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: 11949220
    Abstract: In a block (10) for a cable of the present disclosure, the block has a shape of a rectangular cuboid in which an upper surface (11) and a bottom surface have square shapes, the block has plural bending through holes (21) between one side surface of the rectangular cuboid and a side surface (12) neighboring the one side surface, arrangement of open ends (22) of the plural through holes in the one side surface of the rectangular cuboid is in a lattice manner, the arrangement of the open ends is in line symmetry with respect to a middle line (31) between an upper side and a bottom side of the one side surface and with respect to a middle line (32) between a lateral side and a lateral side of the one side surface, and arrangement of open ends (22) of the plural through holes in the side surface neighboring the one side surface of the rectangular cuboid is the same as the arrangement of the open ends (22) of the plural through holes in the one side surface of the rectangular cuboid.
    Type: Grant
    Filed: September 2, 2019
    Date of Patent: April 2, 2024
    Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
    Inventors: Kuniaki Terakawa, Tomohiro Kawano, Tatsuya Fujimoto, Kazunori Katayama, Tomomi Nagao
  • Patent number: 11904265
    Abstract: An oil separator includes a cover attached to an opening portion on a discharge side of a compressor, a discharge flow path formed in an inside of the cover, and an oil separation portion configured to separate an oil from a fluid that has flowed out from the discharge flow path. A dividing wall portion partitions an internal space facing the opening portion into a plurality of spaces. The dividing wall portion is provided in the inside of the cover. The internal space is a discharge space into which a high-pressure gas refrigerant discharged from the compressor flows. Each of the plurality of spaces faces a high-pressure chamber in the opening portion so as to be in direct communication with the high-pressure chamber.
    Type: Grant
    Filed: September 15, 2022
    Date of Patent: February 20, 2024
    Assignee: Daikin Industries, Ltd.
    Inventors: Yoshiyuki Uemura, Tatsuya Katayama
  • Patent number: 11698072
    Abstract: A compressor includes a drive mechanism and a compression mechanism having a discharge passage and a plurality of members disposed to overlap. The discharge passage includes a muffling chamber, an inflow passage connected to an inflow end of the muffling chamber, and an outflow passage connected to an outflow end of the muffling chamber. The muffling chamber is formed across two or more of the plurality of members. The compression mechanism includes first and second cylinders, and a second closing member that covers an opening surface a of the first cylinder and an opening surface of the second cylinder. The muffling chamber includes an expansion chamber having a passage sectional area larger than the inflow and outflow passages. The expansion chamber is formed across the second closing member, and the first and second cylinders.
    Type: Grant
    Filed: August 1, 2022
    Date of Patent: July 11, 2023
    Assignee: Daikin Industries, Ltd.
    Inventor: Tatsuya Katayama
  • Publication number: 20230017886
    Abstract: An oil separator includes a cover attached to an opening portion on a discharge side of a compressor, a discharge flow path formed in an inside of the cover, and an oil separation portion configured to separate an oil from a fluid that has flowed out from the discharge flow path. A dividing wall portion partitions an internal space facing the opening portion into a plurality of spaces. The dividing wall portion is provided in the inside of the cover. The internal space is a discharge space into which a high-pressure gas refrigerant discharged from the compressor flows. Each of the plurality of spaces faces a high-pressure chamber in the opening portion so as to be in direct communication with the high-pressure chamber.
    Type: Application
    Filed: September 15, 2022
    Publication date: January 19, 2023
    Inventors: Yoshiyuki UEMURA, Tatsuya KATAYAMA
  • Publication number: 20220372983
    Abstract: A compressor includes a drive mechanism and a compression mechanism having a discharge passage and a plurality of members disposed to overlap. The discharge passage includes a muffling chamber, an inflow passage connected to an inflow end of the muffling chamber, and an outflow passage connected to an outflow end of the muffling chamber. The muffling chamber is formed across two or more of the plurality of members. The compression mechanism includes first and second cylinders, and a second closing member that covers an opening surface a of the first cylinder and an opening surface of the second cylinder. The muffling chamber includes an expansion chamber having a passage sectional area larger than the inflow and outflow passages. The expansion chamber is formed across the second closing member, and the first and second cylinders.
    Type: Application
    Filed: August 1, 2022
    Publication date: November 24, 2022
    Inventor: Tatsuya KATAYAMA