Patents by Inventor Mark William Craig

Mark William Craig 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).

  • Regeneration system having integral purge and ignition device
    Patent number: 7958721
    Abstract: A regeneration device is disclosed. The regeneration device has an injector configured to inject pressurized fuel during an injection event. The regeneration device also has a heater configured to ignite the pressurized fuel during the injection event. The heater is also configured to purge the injector between injection events.
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: June 14, 2011
    Assignee: Caterpillar Inc.
    Inventors: Mark William Craig, Justin Werner McMenamy, Glenn Brian Cox, Andrew John Kieser, Ronald Dean Shinogle
  • Regeneration system having integral purge and ignition device
    Publication number: 20090000605
    Abstract: A regeneration device is disclosed. The regeneration device has an injector configured to inject pressurized fuel during an injection event. The regeneration device also has a heater configured to ignite the pressurized fuel during the injection event. The heater is also configured to purge the injector between injection events.
    Type: Application
    Filed: June 29, 2007
    Publication date: January 1, 2009
    Inventors: Mark William Craig, Justin Werner McMenamy, Glenn Brian Cox, Andrew John Kieser, Ronald Dean Shinogle
  • Erosion resistant downhole mud diverter tool
    Patent number: 5911285
    Abstract: An erosion resistant downhole diverter tool (210) comprises a generally cylindrical body (212) which may be configured as a slick sub or may include stabilizing blades (260). Located within the body 212 are a plurality of erosion-resistant, removable, cylindrical inserts (220). Each insert has an aperture (222) formed therein, aligned with a corresponding aperture (218) formed in the cylindrical body (212). Located within the apertures (218) in the cylindrical body (212) are pressure responsive, normally-closed valve assemblies (300), incorporating jet nozzles, which open in response to increased fluid pressure within the tool to provide fluid jets directed into the annulus surrounding the tool in a borehole or the like. The upper ends of the stabilizer blades (260) may include cutting structures to provide a back-reaming function.
    Type: Grant
    Filed: January 31, 1997
    Date of Patent: June 15, 1999
    Inventors: Arthur Deacey Stewart, Mark William Craig