Patents by Inventor Kenzo Matumoto

Kenzo Matumoto 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: 7798787
    Abstract: There is provided an internal intermediate pressure multistage compression type rotary compressor capable of reducing a height dimension while reducing the amount of oil to be discharged outside. An electric element and first and second rotary compression elements which are driven by a rotary shaft of the electric element disposed under the electric element are provided in a hermetic shell case. There is provided a refrigerant introduction pipe for introducing refrigerant in the hermetic shell case over the electric element into the second rotary compression element through an outside of the hermetic shell case. There is provided an oil path provided in the rotary shaft for discharging oil through an oil discharge port which is positioned at the upper end of the rotary shaft. The refrigerant introduction pipe is provided such that apart of an inlet of the refrigerant introduction pipe is positioned under the upper end of a stator of the electric element.
    Type: Grant
    Filed: May 17, 2006
    Date of Patent: September 21, 2010
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Kenzo Matumoto, Haruhisa Yamasaki, Kazuya Sato, Masaya Tadano, Satoshi Imai, Akira Sugawara, Takashi Sato
  • Patent number: 7600986
    Abstract: There is provided an internal intermediate pressure multistage compression type rotary compressor capable of reducing a height dimension while reducing the amount of oil to be discharged outside. An electric element and first and second rotary compression elements which are driven by a rotary shaft of the electric element disposed under the electric element are provided in a hermetic shell case. There is provided a refrigerant introduction pipe for introducing refrigerant in the hermetic shell case over the electric element into the second rotary compression element through an outside of the hermetic shell case. There is provided an oil path provided in the rotary shaft for discharging oil through an oil discharge port which is positioned at the upper end of the rotary shaft. The refrigerant introduction pipe is provided such that a part of an inlet of the refrigerant introduction pipe is positioned under the upper end of a stator of the electric element.
    Type: Grant
    Filed: November 4, 2005
    Date of Patent: October 13, 2009
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Kenzo Matumoto, Haruhisa Yamasaki, Kazuya Sato, Masaya Tadano, Satoshi Imai, Akira Sugawara, Takashi Sato
  • Patent number: 7520733
    Abstract: There is provided an internal intermediate pressure multistage compression type rotary compressor capable of reducing a height dimension while reducing the amount of oil to be discharged outside. An electric element and first and second rotary compression elements which are driven by a rotary shaft of the electric element disposed under the electric element are provided in a hermetic shell case. There is provided a refrigerant introduction pipe for introducing refrigerant in the hermetic shell case over the electric element into the second rotary compression element through an outside of the hermetic shell case. There is provided an oil path provided in the rotary shaft for discharging oil through an oil discharge port which is positioned at the upper end of the rotary shaft. The refrigerant introduction pipe is provided such that apart of an inlet of the refrigerant introduction pipe is positioned under the upper end of a stator of the electric element.
    Type: Grant
    Filed: November 4, 2005
    Date of Patent: April 21, 2009
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Kenzo Matumoto, Haruhisa Yamasaki, Kazuya Sato, Masaya Tadano, Satoshi Imai, Akira Sugawara, Takashi Sato
  • Patent number: 7131821
    Abstract: There is provided an internal intermediate pressure multistage compression type rotary compressor capable of reducing a height dimension while reducing the amount of oil to be discharged outside. An electric element and first and second rotary compression elements which are driven by a rotary shaft of the electric element disposed under the electric element are provided in a hermetic shell case. There is provided a refrigerant introduction pipe for introducing refrigerant in the hermetic shell case over the electric element into the second rotary compression element through an outside of the hermetic shell case. There is provided an oil path provided in the rotary shaft for discharging oil through an oil discharge port which is positioned at the upper end of the rotary shaft. The refrigerant introduction pipe is provided such that a part of an inlet of the refrigerant introduction pipe is positioned under the upper end of a stator of the electric element.
    Type: Grant
    Filed: June 5, 2003
    Date of Patent: November 7, 2006
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Kenzo Matumoto, Haruhisa Yamasaki, Kazuya Sato, Masaya Tadano, Satoshi Imai, Akira Sugawara, Takashi Sato
  • Publication number: 20060204377
    Abstract: There is provided an internal intermediate pressure multistage compression type rotary compressor capable of reducing a height dimension while reducing the amount of oil to be discharged outside. An electric element and first and second rotary compression elements which are driven by a rotary shaft of the electric element disposed under the electric element are provided in a hermetic shell case. There is provided a refrigerant introduction pipe for introducing refrigerant in the hermetic shell case over the electric element into the second rotary compression element through an outside of the hermetic shell case. There is provided an oil path provided in the rotary shaft for discharging oil through an oil discharge port which is positioned at the upper end of the rotary shaft. The refrigerant introduction pipe is provided such that apart of an inlet of the refrigerant introduction pipe is positioned under the upper end of a stator of the electric element.
    Type: Application
    Filed: May 17, 2006
    Publication date: September 14, 2006
    Applicant: Sanyo Electric Co., Ltd.
    Inventors: Kenzo Matumoto, Haruhisa Yamasaki, Kazuya Sato, Masaya Tadano, Satoshi Imai, Akira Sugawara, Takashi Sato
  • Publication number: 20060056983
    Abstract: There is provided an internal intermediate pressure multistage compression type rotary compressor capable of reducing a height dimension while reducing the amount of oil to be discharged outside. An electric element and first and second rotary compression elements which are driven by a rotary shaft of the electric element disposed under the electric element are provided in a hermetic shell case. There is provided a refrigerant introduction pipe for introducing refrigerant in the hermetic shell case over the electric element into the second rotary compression element through an outside of the hermetic shell case. There is provided an oil path provided in the rotary shaft for discharging oil through an oil discharge port which is positioned at the upper end of the rotary shaft. The refrigerant introduction pipe is provided such that apart of an inlet of the refrigerant introduction pipe is positioned under the upper end of a stator of the electric element.
    Type: Application
    Filed: November 4, 2005
    Publication date: March 16, 2006
    Applicant: Sanyo Electric Co., Ltd.
    Inventors: Kenzo Matumoto, Haruhisa Yamasaki, Kazuya Sato, Masaya Tadano, Satoshi Imai, Akira Sugawara, Takashi Sato
  • Publication number: 20060056981
    Abstract: There is provided an internal intermediate pressure multistage compression type rotary compressor capable of reducing a height dimension while reducing the amount of oil to be discharged outside. An electric element and first and second rotary compression elements which are driven by a rotary shaft of the electric element disposed under the electric element are provided in a hermetic shell case. There is provided a refrigerant introduction pipe for introducing refrigerant in the hermetic shell case over the electric element into the second rotary compression element through an outside of the hermetic shell case. There is provided an oil path provided in the rotary shaft for discharging oil through an oil discharge port which is positioned at the upper end of the rotary shaft. The refrigerant introduction pipe is provided such that a part of an inlet of the refrigerant introduction pipe is positioned under the upper end of a stator of the electric element.
    Type: Application
    Filed: November 4, 2005
    Publication date: March 16, 2006
    Applicant: Sanyo Electric Co., Ltd.
    Inventors: Kenzo Matumoto, Haruhisa Yamasaki, Kazuya Sato, Masaya Tadano, Satoshi Imai, Akira Sugawara, Takashi Sato
  • Publication number: 20060056982
    Abstract: There is provided an internal intermediate pressure multistage compression type rotary compressor capable of reducing a height dimension while reducing the amount of oil to be discharged outside. An electric element and first and second rotary compression elements which are driven by a rotary shaft of the electric element disposed under the electric element are provided in a hermetic shell case. There is provided a refrigerant introduction pipe for introducing refrigerant in the hermetic shell case over the electric element into the second rotary compression element through an outside of the hermetic shell case. There is provided an oil path provided in the rotary shaft for discharging oil through an oil discharge port which is positioned at the upper end of the rotary shaft. The refrigerant introduction pipe is provided such that apart of an inlet of the refrigerant introduction pipe is positioned under the upper end of a stator of the electric element.
    Type: Application
    Filed: November 4, 2005
    Publication date: March 16, 2006
    Applicant: Sanyo Electric Co., Ltd.
    Inventors: Kenzo Matumoto, Haruhisa Yamasaki, Kazuya Sato, Masaya Tadano, Satoshi Imai, Akira Sugawara, Takashi Sato
  • Publication number: 20040001762
    Abstract: There is provided an internal intermediate pressure multistage compression type rotary compressor capable of reducing a height dimension while reducing the amount of oil to be discharged outside. An electric element and first and second rotary compression elements which are driven by a rotary shaft of the electric element disposed under the electric element are provided in a hermetic shell case. There is provided a refrigerant introduction pipe for introducing refrigerant in the hermetic shell case over the electric element into the second rotary compression element through an outside of the hermetic shell case. There is provided an oil path provided in the rotary shaft for discharging oil through an oil discharge port which is positioned at the upper end of the rotary shaft. The refrigerant introduction pipe is provided such that a part of an inlet of the refrigerant introduction pipe is positioned under the upper end of a stator of the electric element.
    Type: Application
    Filed: June 5, 2003
    Publication date: January 1, 2004
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Kenzo Matumoto, Haruhisa Yamasaki, Kazuya Sato, Masaya Tadano, Satoshi Imai, Akira Sugawara, Takashi Sato