Patents by Inventor Dennis Crass

Dennis Crass 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).

  • System and method for removal of buried objects
    Patent number: 7381010
    Abstract: The present invention is a system and method for removal of buried objects. According to one embodiment of the invention, a crane with a vibrator casing driver is used to lift and suspend a large diameter steel casing over the buried object. Then the casing is driven into the ground by the vibratory driver until the casing surrounds the buried object. Then the open bottom of the casing is sealed shut by injecting grout into the ground within the casing near its bottom. When the seal has cured and hardened, the top of the casing is lifted to retrieve the casing, with the buried object inside, from the ground.
    Type: Grant
    Filed: August 29, 2006
    Date of Patent: June 3, 2008
    Assignee: Worth Wind, Inc. (Assignee of the interest of Grams, Crass, and Riess)
    Inventors: Robert G. Alexander, Dennis Crass, William Grams, Steven J. Phillips, Mark Riess
  • SYSTEM AND METHOD FOR REMOVAL OF BURIED OBJECTS
    Publication number: 20080101874
    Abstract: The present invention is a system and method for removal of buried objects. According to one embodiment of the invention, a crane with a vibrator casing driver is used to lift and suspend a large diameter steel casing over the buried object. Then the casing is driven into the ground by the vibratory driver until the casing surrounds the buried object. Then the open bottom of the casing is sealed shut by injecting grout into the ground within the casing near its bottom. When the seal has cured and hardened, the top of the casing is lifted to retrieve the casing, with the buried object inside, from the ground.
    Type: Application
    Filed: August 29, 2006
    Publication date: May 1, 2008
    Inventors: Robert G. Alexander, Dennis Crass, William Grams, Steven J. Phillips, Mark Riess