Patents by Inventor Kohei Oue

Kohei Oue 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: 9714661
    Abstract: A vacuum pump which, among others, has a lubricated ball bearing for supporting a rotor shaft of a motor, a bearing holder for holding the lubricated ball bearing, a first labyrinth seal provided between a motor arrangement space and a bearing arrangement space, and a balance adjustment member installed at a position of the rotor shaft to face the bearing holder and used for balance adjustment of a rotating body. A second concave and convex part to be fitted to the first concave and convex part forming the first labyrinth seal. By reducing a gap of the bearing arrangement space, the space in which the oil vapor is filled is reduced. Therefore, a moving amount of the gas, and thus, the decrease in the base oil of the lubricant can be suppressed, thereby extending the lubricating life.
    Type: Grant
    Filed: July 31, 2013
    Date of Patent: July 25, 2017
    Assignee: Shimadzu Corporation
    Inventors: Osamu Ashida, Kohei Oue
  • Publication number: 20140056735
    Abstract: A vacuum pump includes a rotating body having a rotation side exhaust function portion and a rotor shaft, a stationary side exhaust function portion, a lubricated ball bearing for supporting the rotor shaft, a motor for rotating and driving the rotating body, and a first labyrinth seal provided between a space in which a motor stator of the motor is arranged and a space in which the lubricated ball bearing is arranged.
    Type: Application
    Filed: July 31, 2013
    Publication date: February 27, 2014
    Applicant: Shimadzu Corporation
    Inventors: Osamu ASHIDA, Kohei OUE
  • Patent number: 8292603
    Abstract: A rotary vacuum pump includes a pump casing on which an intake port flange is formed, a rotor which has a rotating side evacuating device and is driven to rotate at high speed inside the pump casing, and a fixing side evacuating device which is provided inside the pump casing and generates an evacuating effect together with the rotating side evacuating device. The intake port flange is fastened to a device subject to evacuating by a bolt. A through-hole is formed in the intake port flange for inserting the bolt and has a diameter larger than that of the bolt. A gap forming device for forming a gap between the bolt and the through-hole in the intake port flange is provided on a matching surface of the through-hole.
    Type: Grant
    Filed: July 15, 2005
    Date of Patent: October 23, 2012
    Assignee: Shimadzu Corporation
    Inventors: Fusao Nakamura, Osamu Ashida, Kohei Oue
  • Publication number: 20060024184
    Abstract: A rotary vacuum pump includes a pump casing on which an intake port flange is formed, a rotor which has a rotating side evacuating device and is driven to rotate at high speed inside the pump casing, and a fixing side evacuating device which is provided inside the pump casing and generates an evacuating effect together with the rotating side evacuating device. The intake port flange is fastened to a device subject to evacuating by a bolt. A through-hole is formed in the intake port flange for inserting the bolt and has a diameter larger than that of the bolt. A gap forming device for forming a gap between the bolt and the through-hole in the intake port flange is provided on a matching surface of the through-hole.
    Type: Application
    Filed: July 15, 2005
    Publication date: February 2, 2006
    Applicant: SHIMADZU CORPORATION
    Inventors: Fusao Nakamura, Osamu Ashida, Kohei Oue
  • Patent number: D691640
    Type: Grant
    Filed: January 21, 2013
    Date of Patent: October 15, 2013
    Assignee: Shimadzu Corporation
    Inventor: Kohei Oue