Patents by Inventor Ryuji Nakata

Ryuji Nakata 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).

  • Solid polymeric lubricant composition and polymeric lubricant packed rolling bearing
    Publication number: 20020098988
    Abstract: The invention provides a solid polymeric lubricant composition which, when the composition is packed in a polymeric lubricant packed rolling bearing, does not increase the rotational torque of the bearing, and prevents voids from remaining when the composition is packed and formed in the bearing, seizure from occurring when the rolling bearing is rotated, and also a polymeric lubricant packed rolling bearing in which such a solid polymeric lubricant composition is packed.
    Type: Application
    Filed: January 23, 2002
    Publication date: July 25, 2002
    Inventor: Ryuji Nakata
  • Rolling bearing and method of fabricating the same
    Patent number: 5588751
    Abstract: A rolling bearing has a pair of races, rolling elements and a cage. A region defined between the pair of races is filled with a solid lubricating composition. A film including a lubricating component is formed in a clearance between the cage and the rolling elements, whereby the solid lubricating composition is prevented from being interposed therebetween. The film including a lubricating component is formed prior to the process of filling the region with the lubricating composition to solidify the lubricating composition. It is preferable that the film including a lubricating component is formed on the respective surfaces in contact with the solid lubricating composition of the races, the rolling elements and the cage.
    Type: Grant
    Filed: March 13, 1996
    Date of Patent: December 31, 1996
    Assignee: Koyo Seiko Co., Ltd.
    Inventors: Ryuji Nakata, Hiroshi Komiya