Patents by Inventor Seiichi Kurita

Seiichi Kurita 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).

  • Vertical type antifriction bearing device
    Patent number: 4037890
    Abstract: A vertical type antifriction bearing device which includes an antifriction bearing using balls or rollers as rolling members. This bearing device features that, during operation, the level of lubricating oil is maintained below the antifriction bearing allowing the feed of lubricating oil to the antifriction bearing in a suitable amount, and that during the stoppage of operation, the level of the lubricating oil is raised above the antifriction bearing, whereby during the stoppage of operation the antifriction bearing is shielded from atmosphere or moisture to prevent the corrosion thereof and, during the operation, the agitation loss caused by the lubricating oil is minimized.
    Type: Grant
    Filed: April 15, 1975
    Date of Patent: July 26, 1977
    Assignee: Hitachi, Ltd.
    Inventors: Seiichi Kurita, Toru Nakayama, Kinpei Okano, Seishi Watahiki