Patents by Inventor Kazufumi Kotani

Kazufumi Kotani 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).

  • Rocker joint pin type silent chain
    Patent number: 8012054
    Abstract: In a rocker joint silent chain, the link plates have two different engagement pitches, and the connecting pins are composed of combinations of rocker pins and joint pins, where each rocker pin has one of two thicknesses and each joint pin has one of two thicknesses, so that the rocker joint pins of the chain have three different thicknesses. The link plates and connecting pins are arranged randomly along the length of the chain.
    Type: Grant
    Filed: September 4, 2008
    Date of Patent: September 6, 2011
    Assignee: Tsubakimoto Chain Co.
    Inventors: Takayuki Morimoto, Hitoshi Ohara, Minoru Komada, Kazufumi Kotani, Shuuji Hamaguchi
  • ROCKER JOINT PIN TYPE SILENT CHAIN
    Publication number: 20090131209
    Abstract: In a rocker joint silent chain, the link plates have two different engagement pitches, and the connecting pins are composed of combinations of rocker pins and joint pins, where each rocker pin has one of two thicknesses and each joint pin has one of two thicknesses, so that the rocker joint pins of the chain have three different thicknesses. The link plates and connecting pins are arranged randomly along the length of the chain.
    Type: Application
    Filed: September 4, 2008
    Publication date: May 21, 2009
    Applicant: TSUBAKIMOTO CHAIN CO.
    Inventors: Takayuki Morimoto, Hitoshi Ohara, Minoru Komada, Kazufumi Kotani, Shuuji Hamaguchi
  • Silent chain
    Patent number: 7329198
    Abstract: In a silent chain composed of interleaved rows of link plates held by connecting pins secured to guide plates disposed along the sides of the chain, the guide plates are formed with protrusions, and are deformed so that they exert a spring action on the rows of link plates through the protrusions, pressing the link plates against one another to increase the frictional contact between the link plates, and thereby reduce vibration and vibration noise.
    Type: Grant
    Filed: August 22, 2006
    Date of Patent: February 12, 2008
    Assignee: Tsubakimoto Chain Co.
    Inventor: Kazufumi Kotani
  • Silent chain transmission device
    Publication number: 20070275804
    Abstract: A silent chain transmission utilizes two different kinds of link plates. In a first kind of link plate, the inner flank pitch line is farther than the outer flank pitch line from the chain pitch line. In a second kind of link plate the inner flank pitch line is closer than the outer flank pitch line from the chain pitch line. Every four successive links includes at least one link composed of one type of link plate and at least one link composed of the other type of link plate.
    Type: Application
    Filed: March 13, 2007
    Publication date: November 29, 2007
    Applicant: Tsubakimoto Chain Co.
    Inventors: Takayuki Morimoto, Hitoshi Ohara, Minoru Komada, Kazufumi Kotani, Shuuji Hamaguchi
  • Silent chain
    Publication number: 20070072718
    Abstract: In a silent chain composed of interleaved rows of link plates held by connecting pins secured to guide plates disposed along the sides of the chain, the guide plates are formed with protrusions, and are deformed so that they exert a spring action on the rows of link plates through the protrusions, pressing the link plates against one another to increase the frictional contact between the link plates, and thereby reduce vibration and vibration noise.
    Type: Application
    Filed: August 22, 2006
    Publication date: March 29, 2007
    Applicant: Tsubakimoto Chain Co.
    Inventor: Kazufumi Kotani