Patents by Inventor Yoshiaki Takagishi

Yoshiaki Takagishi 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).

  • CHAIN
    Publication number: 20090286634
    Abstract: In a roller chain or bushing chain, oil introducing holes in a bushing are offset laterally from a central location between the inner link plates, located in close proximity to the inner link plates, but not buried within the holes of the inner link plates in which the bushing is press-fit.
    Type: Application
    Filed: April 7, 2009
    Publication date: November 19, 2009
    Applicant: TSUBAKIMOTO CHAIN CO.
    Inventor: Yoshiaki Takagishi
  • CHAIN
    Publication number: 20090286642
    Abstract: The outer link plates of a roller chain or rollerless bushing chain have one or more curved grooves formed by pressing, on their inner faces. The grooves connecting one of two pin holes formed in each plate to the other pin hole.
    Type: Application
    Filed: March 24, 2009
    Publication date: November 19, 2009
    Applicant: TSUBAKIMOTO CHAIN CO.
    Inventor: Yoshiaki Takagishi
  • Rocker joint pin for chain, and method and apparatus for producing the rocker joint pin
    Patent number: 6427433
    Abstract: A rocker joint pin for use in a chain to articulately interconnect link plates of the chain has a beveled edge at opposite end faces thereof. The beveled edge is formed by forming a V-shaped groove transversely across a surface of a continuous wire and subsequently severing the wire at the bottom of the V-shaped groove.
    Type: Grant
    Filed: September 28, 2000
    Date of Patent: August 6, 2002
    Assignee: Tsubakimoto Chain Co.
    Inventors: Seiichi Kubota, Yoshiaki Takagishi