Patents by Inventor Carl Cunningham

Carl Cunningham 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).

  • Work surface
    Patent number: 10433637
    Abstract: A work surface that attaches to a portable transportation and storage device is provided. The work surface has a tray and legs. The tray has a planar top surface defined by a rear edge, a front edge, and side edges. A lip extends upward from the top surface along each edge. Attachment points on the tray mount the tray to the portable transportation and storage device. The legs have a leg clamping device that mounts the legs to the portable transportation and storage device. The legs include a height adjustable portion configured to selectively extend the length of the legs, and a pivot portion that is rotatable relative to the height adjustable portion.
    Type: Grant
    Filed: June 7, 2018
    Date of Patent: October 8, 2019
    Inventors: J Mitchell Englestead, Carl Cunningham
  • Mixing plant and related production methods
    Patent number: 10286573
    Abstract: A mobile construction plant includes two sets of low-profile bins: one set containing granular materials and the other set containing powdery materials. Each of the bins is mounted on a weighing mechanism that pre-weighs the contents before mixing. An elongated dual shaft mixer having a small bore diameter is located below the bins. A set of belt conveyors is provided for transporting materials from the granular material bins to the mixer, and a blending auger is provided for transporting materials from the powdered material bins to the mixer. All of the bins, the conveyors, the blending auger, the mixer, and other components are supported on a small footprint frame that can easily be transported to a job site.
    Type: Grant
    Filed: July 21, 2016
    Date of Patent: May 14, 2019
    Inventors: Carl Cunningham, Richard Thornton, Craig Lawson
  • MIXING PLANT AND RELATED PRODUCTION METHODS
    Publication number: 20170021529
    Abstract: A mobile construction plant includes two sets of low-profile bins: one set containing granular materials and the other set containing powdery materials. Each of the bins is mounted on a weighing mechanism that pre-weighs the contents before mixing. An elongated dual shaft mixer having a small bore diameter is located below the bins. A set of belt conveyors is provided for transporting materials from the granular material bins to the mixer, and a blending auger is provided for transporting materials from the powdered material bins to the mixer. All of the bins, the conveyors, the blending auger, the mixer, and other components are supported on a small footprint frame that can easily be transported to a job site.
    Type: Application
    Filed: July 21, 2016
    Publication date: January 26, 2017
    Inventors: Carl Cunningham, Richard Thornton, Craig Lawson