Patents by Inventor Eiichi Oshio

Eiichi Oshio 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: 12590583
    Abstract: There is provided a scroll compressor capable of stopping breakage even when a rear bearing supporting a shaft has an outer diameter dimension larger than an outer diameter dimension of a shaft seal. The scroll compressor includes a rear bearing 18 press-fitted and fixed to the center casing 6 to support the shaft 14, and a shaft seal 58 disposed on the through hole 17 side of the rear bearing 18. A movable scroll 22 is revolved with respect to the fixed scroll 21. The rear bearing 18 has an outer diameter dimension larger than that of the shaft seal 58, and the shaft seal 58 has a separate structure from the rear bearing 18. Between the rear bearing 18 and the shaft seal 58, a shaft seal fixing plate 64 having a diameter larger than that of the shaft seal 58 is interposed.
    Type: Grant
    Filed: July 27, 2023
    Date of Patent: March 31, 2026
    Assignee: SANDEN CORPORATION
    Inventors: Taizo Sato, Misako Kaburagi, Hitoshi Akuzawa, Eiichi Oshio, Kyoshiro Nishiyama
  • Publication number: 20260055765
    Abstract: Provided is a scroll compressor with durability improved by effectively reducing strong contact between a wrap of a movable scroll and an end plate of a fixed scroll without impairing a function. A compression chamber 34 formed between wraps 24, 32 of a fixed scroll 21 and a movable scroll 22 is narrowed while moving from the outside to the inside, thereby compressing working fluid. The wrap 32 of the movable scroll 22 has an inclined portion of which a height gradually decreases toward a winding end point P2 in an area from a point Pl at which a line L1 extending outward from the center O of a spiral base circle through an outer wall extension start point S intersects the outermost wrap 32 to the winding end point P2.
    Type: Application
    Filed: July 27, 2023
    Publication date: February 26, 2026
    Inventors: Hiroki MASHIYAMA, Yuta TANAKA, Taizo SATO, Kyoshiro NISHIYAMA, Hitoshi AKUZAWA, Misako KABURAGI, Eiichi OSHIO
  • Patent number: 12546314
    Abstract: A first coating layer formed by tin plating is formed on a compression chamber-side end face of a baseplate of one scroll and a surface of a spiral wall, a second coating layer formed by nickel-phosphorus plating is formed on a compression chamber-side end face of a baseplate of another scroll and a surface of a spiral wall, a wall height of the spiral wall of the other scroll is higher than a wall height of the spiral wall of the one scroll, and the first coating layer at the tip of the spiral wall of the one scroll and the second coating layer of the baseplate of the other scroll are separated from each other, and the first coating layer of the baseplate of the one scroll and the second coating layer at the tip of the spiral wall of the other scroll are in contact with each other.
    Type: Grant
    Filed: June 26, 2023
    Date of Patent: February 10, 2026
    Assignee: SANDEN CORPORATION
    Inventors: Atsuo Teshima, Taizo Sato, Eiichi Oshio, Hitoshi Akuzawa, Kyoshiro Nishiyama, Takuya Tsukui
  • Publication number: 20250354554
    Abstract: A first coating layer formed by tin plating is formed on a compression chamber-side end face of a baseplate of one scroll and a surface of a spiral wall, a second coating layer formed by nickel-phosphorus plating is formed on a compression chamber-side end face of a baseplate of another scroll and a surface of a spiral wall, a wall height of the spiral wall of the other scroll is higher than a wall height of the spiral wall of the one scroll, and the first coating layer at the tip of the spiral wall of the one scroll and the second coating layer of the baseplate of the other scroll are separated from each other, and the first coating layer of the baseplate of the one scroll and the second coating layer at the tip of the spiral wall of the other scroll are in contact with each other.
    Type: Application
    Filed: June 26, 2023
    Publication date: November 20, 2025
    Inventors: Atsuo TESHIMA, Taizo SATO, Eiichi OSHIO, Hitoshi AKUZAWA, Kyoshiro NISHIYAMA, Takuya TSUKUI
  • Publication number: 20250354550
    Abstract: There is provided a scroll compressor capable of stopping breakage even when a rear bearing supporting a shaft has an outer diameter dimension larger than an outer diameter dimension of a shaft seal. The scroll compressor includes a rear bearing 18 press-fitted and fixed to the center casing 6 to support the shaft 14, and a shaft seal 58 disposed on the through hole 17 side of the rear bearing 18. A movable scroll 22 is revolved with respect to the fixed scroll 21. The rear bearing 18 has an outer diameter dimension larger than that of the shaft seal 58, and the shaft seal 58 has a separate structure from the rear bearing 18. Between the rear bearing 18 and the shaft seal 58, a shaft seal fixing plate 64 having a diameter larger than that of the shaft seal 58 is interposed.
    Type: Application
    Filed: July 27, 2023
    Publication date: November 20, 2025
    Inventors: Taizo SATO, Misako KABURAGI, Hitoshi AKUZAWA, Eiichi OSHIO, Kyoshiro NISHIYAMA
  • Patent number: 8454329
    Abstract: A sealed terminal device for a motor-driven compressor has an electrically insulating terminal holder (12) to be attached to the housing wall (2a) of the motor-driven compressor, a plurality of sealed terminals (18) held in the terminal holder (12), for penetrating the housing wall (2a) with play to the housing wall (2a), and a groove (40) or cavity (38) formed in the terminal holder (12) to increase a creepage distance for insulation between the sealed terminals.
    Type: Grant
    Filed: June 25, 2007
    Date of Patent: June 4, 2013
    Assignee: Sanden Corporation
    Inventors: Masanori Taguchi, Masahiko Osaka, Eiichi Oshio, Kazuhiko Kameyama, Satoru Saito
  • Publication number: 20090315417
    Abstract: A sealed terminal device for a motor-driven compressor has an electrically insulating terminal holder (12) to be attached to the housing wall (2a) of the motor-driven compressor, a plurality of sealed terminals (18) held in the terminal holder (12), for penetrating the housing wall (2a) with play to the housing wall (2a), and a groove (40) or cavity (38) formed in the terminal holder (12) to increase a creepage distance for insulation between the sealed terminals.
    Type: Application
    Filed: June 25, 2007
    Publication date: December 24, 2009
    Applicant: Sanden Corporation
    Inventors: Masanori Taguchi, Masahiko Osaka, Eiichi Oshio, Kazuhiko Kameyama, Satoru Saito
  • Publication number: 20090285703
    Abstract: An energization bolt (102), which includes an input portion (102a) to be connected to a motor (40), an intermediate portion (102b) contiguous to the input portion and positioned in an insertion hole (23d) formed in a housing (20), and an output portion (102c) contiguous to the intermediate portion and to be connected to a drive circuit (98), and energizes between the drive circuit and the motor, and a seal member (100), which surrounds the intermediate portion, is sandwiched and supported by the input portion side and the output portion side, and is fastened to the housing, are included.
    Type: Application
    Filed: June 26, 2007
    Publication date: November 19, 2009
    Inventors: Masahiko Osaka, Masanori Taguchi, Satoru Saito, Eiichi Oshio, Kazuhiko Kameyama, Kou Tsukamoto