Patents by Inventor Mutsumi Otsuka

Mutsumi Otsuka 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: 7628593
    Abstract: A horizontal type scroll compressor is provided with a support plate separating an inside of the sealed container into a first space in which the compressor mechanism portion and the electric motor portion are stored, and a second space in which the discharge pipe is provided, and a communication path communicating a bottom portion of the first space and a space above the drive shaft within the second space in a lower side of the support plate, and regulates an oil level by the communication path in the case that the oil level difference becomes large at a time of a high-speed operation. In order to stabilize the oil supply to the bearing or the like, the oil is supplied by an oil pump provided in a shaft end portion of the drive shaft close to an oil reserving chamber.
    Type: Grant
    Filed: July 9, 2007
    Date of Patent: December 8, 2009
    Assignee: Hitachi Appliances, Inc.
    Inventors: Takao Mizuno, Mutsumi Otsuka, Katsuya Ohashi, Yasushi Izunaga, Mutsunori Matsunaga, Masashi Miyake, Kenji Tojo
  • Publication number: 20080008614
    Abstract: In a horizontal type scroll compressor discharging compressed gas from a discharge pipe provided in a sealed container in which a compressor mechanism portion and an electric motor portion are stored, for preventing a refrigerator oil from flowing out of a compressor, for supplying an oil in an oil holding portion chamber to a bearing sliding portion, and for reducing an oil ascent, the horizontal type scroll compressor is provided with a support plate separating an inside of the sealed container into a first space in which the compressor mechanism portion and the electric motor portion are stored, and a second space in which the discharge pipe is provided, and a communication path communicating a bottom portion of the first space and a space above the drive shaft within the second space in a lower side of the support plate, and regulates an oil level by the communication path in the case that the oil level difference becomes large at a time of a high-speed operation.
    Type: Application
    Filed: July 9, 2007
    Publication date: January 10, 2008
    Inventors: Takao Mizuno, Mutsumi Otsuka, Katsuya Ohashi, Yasushi Izunaga, Mutsunori Matsunaga, Masashi Miyake, Kenji Tojo