Patents by Inventor James D. Robberson

James D. Robberson 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: 6874799
    Abstract: A folding hand truck comprising an upper frame, a middle frame, a lower frame, a platform, and a dual wheel assembly. The lower end of the upper frame is rotatably connected to the upper end of the middle frame, and the upper end of the middle frame is rotatably connected to the upper end of the lower frame, and the respective ends contain locking pins for locking the upper frame, middle frame, and lower frame in a substantially coplanar orientation. The platform is rotatably connected to the bottom of the lower frame such that the rear edge of the platform contacts the lower end of the lower frame in the operative position. The dual wheel assembly has a central bracket mounted to the rear side of the lower frame and has two rotatable wheel brackets capable of being locked in both operative and folded positions. When in the folded position, the platform folds into the lower frame, which folds into the middle frame.
    Type: Grant
    Filed: February 1, 2003
    Date of Patent: April 5, 2005
    Inventors: James D. Robberson, Beverly J Robberson
  • Publication number: 20040150195
    Abstract: A folding hand truck comprising an upper frame, a middle frame, a lower frame, a platform, and a dual wheel assembly. The lower end of the upper frame is rotatably connected to the upper end of the middle frame, and the upper end of the middle frame is rotatably connected to the upper end of the lower frame, and the respective ends contain locking pins for locking the upper frame, middle frame, and lower frame in a substantially coplanar orientation. The platform is rotatably connected to the bottom of the lower frame such that the rear edge of the platform contacts the lower end of the lower frame in the operative position. The dual wheel assembly has a central bracket mounted to the rear side of the lower frame and has two rotatable wheel brackets capable of being locked in both operative and folded positions. When in the folded position, the platform folds into the lower frame, which folds into the middle frame.
    Type: Application
    Filed: February 1, 2003
    Publication date: August 5, 2004
    Inventors: James D. Robberson, Beverly J. Robberson
  • Patent number: 6733026
    Abstract: A folding cart is disclosed which has a forward section, a main section, and a rear section, along with forward and rear end rails and left and right side rails. The forward and rear portions of the left and right side rails fold to a coplanar position with the main portion of each respective side rail, while the forward and rear end rails fold down to a position coplanar with the forward section and rear section, respectively. The forward and rear sections may then be rotated to a position over the main section. The forward and rear sections each have mounted to their bottom surfaces a dual wheel assembly, each dual wheel assembly having a pair of wheels which may be folded to a position parallel to their respective forward or rear section. The forward dual wheel assembly is mounted to the front section of the folding cart a rotating pivot, while the rear dual wheel assembly is mounted directly to the rear section. Finally, a folding handle is provided which is attached to the forward dual wheel assembly.
    Type: Grant
    Filed: June 5, 2003
    Date of Patent: May 11, 2004
    Inventors: Beverly J Robberson, James D. Robberson