Patents by Inventor Roger Craig Robertson

Roger Craig Robertson 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).

  • Ambulatory cutting device
    Patent number: 10994431
    Abstract: An ambulatory cutting device is provided. The ambulatory cutting device provides a blade mounted, by way of a blade holding assembly, to a wheeled frame. The wheeled frame has handles for a user to push the wheeled frame along a surface supporting a roofing membrane or other cuttable membrane, wherein the blade holding assembly maintains the mounted blade at an elevation just below the supporting surface so that the membrane is cut as a user pushes the wheeled frame.
    Type: Grant
    Filed: November 26, 2019
    Date of Patent: May 4, 2021
    Inventor: Roger Craig Robertson
  • AMBULATORY CUTTING DEVICE
    Publication number: 20200171682
    Abstract: An ambulatory cutting device is provided. The ambulatory cutting device provides a blade mounted, by way of a blade holding assembly, to a wheeled frame. The wheeled frame has handles for a user to push the wheeled frame along a surface supporting a roofing membrane or other cuttable membrane, wherein the blade holding assembly maintains the mounted blade at an elevation just below the supporting surface so that the membrane is cut as a user pushes the wheeled frame.
    Type: Application
    Filed: November 26, 2019
    Publication date: June 4, 2020
    Inventor: Roger Craig Robertson