Patents by Inventor Chester N. Grant

Chester N. Grant 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).

  • Surface texture configuration for CVT pulley
    Patent number: 7276002
    Abstract: A pulley engageable with a belt for use in a continuously variable transmission includes first and second pulley halves rotatable about an axis and relatively moveable in a direction of the axis. The pulley halves include truncated conical portions symmetrically opposed to each other and outer surfaces which are axially opposed to each other and sloped relative to the axis. The outer surfaces have a circumferential roughness average (Ra,y) measured in a direction (y) circumferential to the axis between approximately 0.15 and 1.0 micrometer. The outer surfaces have a radial roughness average (Ra,x) measured in a direction (x) radial to the axis, and a ratio Ra,x/Ra,y between approximately 0.5 and 2.5.
    Type: Grant
    Filed: October 23, 2003
    Date of Patent: October 2, 2007
    Assignee: General Motors Corporation
    Inventors: Yucong Wang, Beizhi Zhou, Serge V. Guillot, Robert J. Porter, Sohail A. Khan, Chester N. Grant