Patents by Inventor James A. Backman

James A. Backman 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).

  • Concrete mixer
    Patent number: 5839824
    Abstract: A concrete mixer including a mixing shell and a void located therein for receiving material to form concrete. The concrete mixing mechanism having a first blade mechanism spatially orientated to have a pitch capable of moving at least a portion of the material in a first predetermined direction and a second blade mechanism spatially orientated to have a pitch capable of moving at least a portion of the material in a second predetermined direction.
    Type: Grant
    Filed: March 11, 1996
    Date of Patent: November 24, 1998
    Inventors: James A. Backman, Todd A. Sherbinow