Patents by Inventor Sharon Astleford

Sharon Astleford 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).

  • Drill fluid screening device
    Patent number: 7556154
    Abstract: In a method and apparatus for screening drilling fluids to remove entrained debris, the fluid is urged upwardly from the lower side to the upper side of an inclined or horizontal mesh screen, so that debris falls from the face of the screen under gravity to be collected and removed, and the clean fluid emerges above the screen. The debris may be removed by a conveyor or by a vibrating mesh surface. The operating life of the screen is thereby extended.
    Type: Grant
    Filed: October 13, 2005
    Date of Patent: July 7, 2009
    Inventors: John Astleford, Sharon Astleford
  • Drill fluid screening device
    Publication number: 20060081508
    Abstract: In a method and apparatus for screening drilling fluids to remove entrained debris, the fluid is urged upwardly from the lower side to the upper side of an inclined or horizontal mesh screen, so that debris falls from the face of the screen under gravity to be collected and removed, and the clean fluid emerges above the screen. The debris may be removed by a conveyor or by a vibrating mesh surface. The operating life of the screen is thereby extended.
    Type: Application
    Filed: October 13, 2005
    Publication date: April 20, 2006
    Inventors: John Astleford, Sharon Astleford