Patents by Inventor Isamu Okabe

Isamu Okabe 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).

  • Tensioner lever device
    Patent number: 6110063
    Abstract: To reduce a sliding resistance of a tensioner lever of a transmission chain and to suppress any flapping vibration in a free span portion of the transmission chain, a tensioner lever (1,11) has a tensioner sprocket (2,12) disposed in registry with a bent portion of a transmission chain C having a minimum bent radius of curvature. The tensioner sprocket is pressed by the tensioner lever against the slack run of the transmission chain to form the bent portion, and a shoe member (3,13) is mounted between the tensioner sprocket and a proximal end (1', 11') of the tensioner lever to slidably guide the free span portion of the run.
    Type: Grant
    Filed: May 8, 1998
    Date of Patent: August 29, 2000
    Assignee: Tsubakimoto Chain Co.
    Inventors: Isamu Okabe, Tadasu Suzuki