Patents by Inventor Brett Gregory Wallihan

Brett Gregory Wallihan 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).

  • Patent number: 7784535
    Abstract: A bail support and a top drive system for an oilfield drill rig. The top drive system includes a drive apparatus, and the bails have bodies with upper head portions and two spaced-apart legs. Each leg includes an upper leg portion and a lower leg portion. The upper leg portions are non-parallel to each other and extend from the head portion at an angle to a centerline of the bail. Each lower leg portion extends down from its corresponding upper leg portion in a reverse bend.
    Type: Grant
    Filed: June 27, 2007
    Date of Patent: August 31, 2010
    Assignee: Varco I/P, Inc.
    Inventors: Lawrence E. Wells, Brett Gregory Wallihan
  • Publication number: 20090000780
    Abstract: A bail support and a top drive system with such bail supports, the top drive system including a top drive apparatus, the bails having a body with an upper head portion and two spaced-apart legs, each leg with an upper leg portion and a lower leg portion, the upper leg portions non-parallel to each other and extending from the head portion at an angle to a centerline of the bail, and each lower leg portion extending down from a corresponding upper leg portion in a reverse bend. This abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure and is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims, 37 CFR 1.72(b).
    Type: Application
    Filed: June 27, 2007
    Publication date: January 1, 2009
    Inventors: Lawrence E. Wells, Brett Gregory Wallihan
  • Patent number: D572119
    Type: Grant
    Filed: June 27, 2007
    Date of Patent: July 1, 2008
    Assignee: Varco I/P, Inc.
    Inventors: Lawrence E. Wells, Brett Gregory Wallihan