Patents by Inventor Yuuta OKAMURA

Yuuta OKAMURA 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).

  • Compressor with trailing and leading edges of oil discharge passage displaced behind trailing and leading edges of oil supply hole
    Patent number: 9447786
    Abstract: A compressor includes a compression mechanism and a drive shaft having an oil supply hole opened through an outer peripheral surface of the drive shaft to supply oil to a bearing surface of the drive shaft. An oil discharge passage communicating with the oil supply hole is formed by a flat surface or a recessed surface at a portion of the outer peripheral surface of the drive shaft. A trailing edge of the oil discharge passage is displaced behind a trailing edge of the oil supply hole with respect to a rotation direction of the drive shaft. A leading edge of the oil discharge passage is displaced behind a leading edge of the oil supply hole with respect to the rotation direction of the drive shaft. The oil discharge passage has a width that is no larger than a diameter of the oil supply hole.
    Type: Grant
    Filed: January 31, 2014
    Date of Patent: September 20, 2016
    Assignee: Daikin Industries, Ltd.
    Inventors: Kouji Tanaka, Hiroshi Kitaura, Yasuhiro Murakami, Yuuta Okamura
  • COMPRESSOR
    Publication number: 20160047381
    Abstract: A compressor includes a compression mechanism and a drive shaft having an oil supply hole opened through an outer peripheral surface of the drive shaft to supply oil to a bearing surface of the drive shaft. An oil discharge passage communicating with the oil supply hole is formed by a flat surface or a recessed surface at a portion of the outer peripheral surface of the drive shaft. A trailing edge of the oil discharge passage is displaced behind a trailing edge of the oil supply hole with respect to a rotation direction of the drive shaft. A leading edge of the oil discharge passage is displaced behind a leading edge of the oil supply hole with respect to the rotation direction of the drive shaft. The oil discharge passage has a width that is no larger than a diameter of the oil supply hole.
    Type: Application
    Filed: January 31, 2014
    Publication date: February 18, 2016
    Inventors: Kouji TANAKA, Hiroshi KITAURA, Yasuhiro MURAKAMI, Yuuta OKAMURA