Patents by Inventor Beizhi Zhou

Beizhi Zhou 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).

  • CVT belt with chromium nitride coating
    Patent number: 7294077
    Abstract: A belt for a continuously variable transmission (CVT) includes at least one continuous band supported against a contact face in a slot formed in each of a plurality of transverse elements of the CVT. The band has a surface positioned against the contact face. This surface is coated with chromium nitride by physical vapor deposition to reduce wear.
    Type: Grant
    Filed: February 24, 2004
    Date of Patent: November 13, 2007
    Assignee: General Motors Corporation
    Inventors: Yucong Wang, Sohail A. Khan, Beizhi Zhou, Reuben Sarkar, Michael J. Lukitsch, Yang-Tse Cheng, Anita M. Weiner
  • 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
  • CVT belt with chromium nitride coating
    Publication number: 20050187056
    Abstract: A belt for a continuously variable transmission (CVT) includes at least one continuous band supported against a contact face in a slot formed in each of a plurality of transverse elements of the CVT. The band has a surface positioned against the contact face. This surface is coated with chromium nitride by physical vapor deposition to reduce wear.
    Type: Application
    Filed: February 24, 2004
    Publication date: August 25, 2005
    Inventors: Yucong Wang, Sohail Khan, Beizhi Zhou, Reuben Sarkar, Michael Lukitsch, Yang-Tse Cheng, Anita Weiner
  • Surface texture configuration for CVT pulley
    Publication number: 20050090340
    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: Application
    Filed: October 23, 2003
    Publication date: April 28, 2005
    Inventors: Yucong Wang, Beizhi Zhou, Serge Guillot, Robert Porter, Sohail Khan, Chester Grant