Patents by Inventor Christopher L. Dunlavy

Christopher L. Dunlavy 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: 9175550
    Abstract: A containment cellar collects petroleum products leaked in a vicinity of a conductor pipe at an oil drilling site. The containment cellar has a body, a pipe, and a pumping orifice. The body has bottom and side surfaces to define an interior chamber to surround a length of the conductor pipe. The bottom surface includes an aperture to receive the conductor pipe. The surfaces are composed of materials substantially impermeable to the petroleum products. The side surface has sufficient strength to maintain integrity of the interior chamber when the containment cellar is disposed at least partially beneath a surface of the earth. The pipe extends through the interior chamber. The pumping orifice is coupled with the pipe and adapted for coupling with a pump to extract the leaked petroleum products from the interior chamber.
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: November 3, 2015
    Assignee: C & C Rentals, LLC
    Inventor: Christopher L. Dunlavy
  • Publication number: 20130277056
    Abstract: A containment cellar collects petroleum products leaked in a vicinity of a conductor pipe at an oil drilling site. The containment cellar has a body, a pipe, and a pumping orifice. The body has bottom and side surfaces to define an interior chamber to surround a length of the conductor pipe. The bottom surface includes an aperture to receive the conductor pipe. The surfaces are composed of materials substantially impermeable to the petroleum products. The side surface has sufficient strength to maintain integrity of the interior chamber when the containment cellar is disposed at least partially beneath a surface of the earth. The pipe extends through the interior chamber. The pumping orifice is coupled with the pipe and adapted for coupling with a pump to extract the leaked petroleum products from the interior chamber.
    Type: Application
    Filed: April 20, 2012
    Publication date: October 24, 2013
    Applicant: C & C Rentals, LLC
    Inventor: Christopher L. Dunlavy