Patents by Inventor Usama Y. Awwad

Usama Y. Awwad 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).

  • REMANUFACTURING HYDRAULIC PUMPS
    Publication number: 20110179947
    Abstract: A hydraulic pump can be remanufactured to save the investment in its components that are not seriously worn or failed. Some of the worn components, such as the pump barrel and yoke, can be salvaged by replacing or rebuilding the worn features. In particular, a worn internal spline on the pump barrel can be replaced by a spline insert that is threaded to the pump barrel and includes a new internal spline. A worn actuation tab on a yoke for contacting an actuating piston can be replaced by adding a new tab wear button.
    Type: Application
    Filed: April 11, 2011
    Publication date: July 28, 2011
    Inventors: Usama Y. AWWAD, Trent A. Simpson
  • Method of remanufacturing and salvaging hydraulic pumps
    Patent number: 7934303
    Abstract: A hydraulic pump can be remanufactured to save the investment in its components that are not seriously worn or failed. Some of the worn components, such as the pump barrel and yoke, can be salvaged by replacing or rebuilding the worn features. In particular, a worn internal spline on the pump barrel can be replaced by a spline insert that is threaded to the pump barrel and includes a new internal spline. A worn actuation tab on a yoke for contacting an actuating piston can be replaced by adding a new tab wear button.
    Type: Grant
    Filed: June 9, 2005
    Date of Patent: May 3, 2011
    Assignee: Caterpillar Inc.
    Inventors: Usama Y. Awwad, Trent A. Simpson