Patents by Inventor Thong H. Vo

Thong H. Vo 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).

  • Imaging member end flange and end flange assembly
    Patent number: 5752136
    Abstract: A hollow cylindrical electrostatographic imaging member supporting end flange including a disk shaped member, a supporting hub extending axially from the disk shaped member and a metal disk coaxially secured to the hub, the disk comprising a plurality of rectangular tabs extending radially from the disk in a direction away from an imaginary axis of the hub for engagement with the hollow cylindrical electrostatographic imaging member upon insertion of the hub and disk shaped member into one end of the hollow cylindrical electrostatographic imaging member. When this end flange is inserted into one end of the hollow cylindrical electrostatographic imaging member, the plurality of rectangular tabs extending radially from the disk engage the inner surface of the hollow cylindrical electrostatographic imaging member.
    Type: Grant
    Filed: September 29, 1995
    Date of Patent: May 12, 1998
    Assignee: Xerox Corporation
    Inventors: Ismael R. Sanchez, Robert S. Foltz, Warren F. Brydges, William A. Hammond, Eugene A. Swain, John K. Williams, Richard C Petralia, Thong H. Vo
  • Method and apparatus for reusing a photoreceptor and gear assembly
    Patent number: 5655182
    Abstract: A reusable photoreceptor assembly has a gear assembly removable from a photoreceptor. A square leaf spring or ring is used to secure and remove the gear assembly to and from the photoreceptor, thereby avoiding damage to both the gear assembly and photoreceptor during the removal of the gear assembly. The undamaged gear assembly and photoreceptor may then be reused.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: August 5, 1997
    Assignee: Xerox Corporation
    Inventors: Ismael R. Sanchez, Warren F. Brydges, Robert S. Foltz, William A. Hammond, Richard C. Petralia, Eugene A. Swain, Thong H. Vo, John K. Williams
  • Robotic end effector
    Patent number: 5366340
    Abstract: An end effector for a robotic assembly for acquiring and manipulating articles having a substantially cylindrical aperture therein. The end effector has a cylindrical gripping portion having radially expandable fingers and a collar portion adapted to bear on the article. When the fingers are inserted into the aperture in the article and expanded the object is gripped over a large portion of the circumference of the aperture. The article is then translated from a vertical to horizontal position. The gripping portion is provided with a flat portion to allow the article to be contacted against a stop for easy withdrawal of the fingers. The entire cylindrical gripping portion is flexibly mounted to the robotic assembly to allow acquisition of an article presented to the gripping portion of the end effector in an off vertical alignment.
    Type: Grant
    Filed: August 28, 1992
    Date of Patent: November 22, 1994
    Assignee: Xerox Corporation
    Inventors: Thong H. Vo, William A. Hammond