Patents by Inventor Seishi Nakaoka

Seishi Nakaoka 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).

  • Filter arrangement for a refrigerant compressor
    Patent number: 5562427
    Abstract: A porous filter having a pore size of no more than 80 .mu.m is provided in a refrigerant flow passage of a refrigeration system. The filter may be provided in a drier provided in the refrigerant flow passage or in a separate filter casing provided in the refrigerant flow passage. Alternatively, the filter may be provided in the refrigerant flow passage within a sealed casing of a refrigerant compressor which is incorporated in the refrigeration system. The filter is formed of a molded solid material constituted by alumina, silica gel, calcium sulfide and aluminosilicate.
    Type: Grant
    Filed: August 26, 1994
    Date of Patent: October 8, 1996
    Assignee: Matsushita Refrigeration Company
    Inventors: Masao Mangyo, Seishi Nakaoka, Shuichi Yakushi, Shinya Ito, Takao Kawashima, Satoshi Wada, Hideki Kawai
  • Refrigerant compressor and refrigeration system incorporating same
    Patent number: 5557945
    Abstract: A filter formed of a filter material, such as, fluororesin, cellulose ester, polycarbonate or silica fiber is provided in a refrigerant flow passage of a refrigeration system. In the refrigerant flow passage, the filter is sandwiched by porous members, or the filter is attached to a porous member by means of, such as, heat sealing. The filter may be provided in a drier provided in the refrigerant flow passage. Alternatively, the filter may be provided in the refrigerant flow passage within a sealed casing of a refrigerant compressor which is incorporated in the refrigeration system.
    Type: Grant
    Filed: October 11, 1994
    Date of Patent: September 24, 1996
    Assignee: Matsushita Refrigeration Company
    Inventors: Masao Mangyo, Sinya Ito, Seishi Nakaoka
  • Refrigerant compressor and refrigeration system incorporating same
    Patent number: 5402655
    Abstract: A porous filter having a pore size of no more than 80 .mu.m is provided in a refrigerant flow passage of a refrigeration system. The filter may be provided in a drier provided in the refrigerant flow passage or in a separate filter casing provided in the refrigerant flow passage. Alternatively, the filter may be provided in the refrigerant flow passage within a sealed casing of a refrigerant compressor which is incorporated in the refrigeration system.
    Type: Grant
    Filed: October 25, 1993
    Date of Patent: April 4, 1995
    Assignee: Matsushita Refrigerator Company
    Inventors: Masao Mangyo, Seishi Nakaoka, Shuichi Yakushi, Shinya Ito, Takao Kawashima, Satoshi Wada, Hideki Kawai
  • Sealed type motor compressor
    Patent number: 4531894
    Abstract: A sealed type motor compressor includes a motor section, a compressor section, a sealed enclosure for resiliently supporting therein the motor section and the compressor section, a suction pipe extending through the sealed enclosure, a suction muffler mounted on the compressor section, an insert pipe received at its one end in an inlet port with a slight clearance therebetween, and a closely coiled spring in the form of a cylinder for interposing between the suction pipe and the insert pipe. A communication pipe is adapted to extend through an aperture formed in the muffler and to be forcedly fitted into a suction port formed in a cylinder head, thereby serving to connect the muffler to the cylinder head.
    Type: Grant
    Filed: April 27, 1984
    Date of Patent: July 30, 1985
    Assignee: Matsushita Reika Co., Ltd.
    Inventors: Hideki Kawai, Hidetoshi Nishihara, Seishi Nakaoka, Koushi Hamada