Patents by Inventor Kiyoshi Miyatake

Kiyoshi Miyatake 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: 4566567
    Abstract: Of a plurality of column portions and annular portions on both sides thereof comprising a roller cage, at least one of the annular portions is molded separate from the column portions, the column and annular portions are provided therein projections and mating recesses in the opposing faces and these are fitted together for secure joining thereof, and lugs formed at both ends of the spring element for urging rollers, which is divided into a plurality of segments along the periphery of the cage, are bent into radial grooves and a stepped recess portion for engagement therein.
    Type: Grant
    Filed: October 12, 1983
    Date of Patent: January 28, 1986
    Assignee: Koyo Seiko Company Limited
    Inventor: Kiyoshi Miyatake