Patents by Inventor Gilbert John Laidlaw

Gilbert John Laidlaw 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).

  • Diffuser for a centrifugal compressor
    Patent number: 6540481
    Abstract: A diffuser for a centrifugal compressor in which the diffuser has a plurality of passageways that each include a diffuser inlet region, a diffuser throat region, and a diffusion region. Within the diffuser inlet region are positioned pairs of opposed ridges that disrupt the boundary layer growth and minimize aerodynamic blockage at the throat region. The diffusion region includes a first diffusion region downstream of the throat region and that has a first area expansion ratio, and the second diffusion region that includes flow dividers to allow a total area expansion rate within the second diffusion region that is about twice that of the area expansion rate in the first diffusion region.
    Type: Grant
    Filed: April 4, 2001
    Date of Patent: April 1, 2003
    Assignee: General Electric Company
    Inventors: Zaher Milad Moussa, Gilbert John Laidlaw, David John Tapparo
  • Diffuser for a centrifugal compressor
    Publication number: 20020146320
    Abstract: A diffuser for a centrifugal compressor in which the diffuser has a plurality of passageways that each include a diffuser inlet region, a diffuser throat region, and a diffusion region. Within the diffuser inlet region are positioned pairs of opposed ridges that disrupt the boundary layer growth and minimize aerodynamic blockage at the throat region. The diffusion region includes a first diffusion region downstream of the throat region and that has a first area expansion ratio, and the second diffusion region that includes flow dividers to allow a total area expansion rate within the second diffusion region that is about twice that of the area expansion rate in the first diffusion region.
    Type: Application
    Filed: April 4, 2001
    Publication date: October 10, 2002
    Inventors: Zaher Milad Moussa, Gilbert John Laidlaw, David John Tapparo