Patents by Inventor Randall S. Shinn

Randall S. Shinn 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).

  • Traversing roll breaker apparatus
    Patent number: 5249750
    Abstract: This apparatus (10) for reducing lumps of coal, and the like, on a grid (14) disposed over a material-receiving area (16) includes a carriage (12) guided across the grid (14) on a track (44) by a drive system (50) and having roll assemblies (60) mounted thereto. Each roll assembly (60) includes a drive roll (62) having stationary shaft assemblies (66,68) mounted to the carriage (12) and driven by an internally mounted motor (78), and a set of pick rings (64) mounted to the drive roll (62) at longitudinally spaced intervals and having pick circles with picks (90) pointing in both directions. The material-receiving area includes a conveyor system which, when the area is wide, includes a longitudinal conveyor (100) flanked by a plurality of lateral feeder conveyors (102).
    Type: Grant
    Filed: March 13, 1991
    Date of Patent: October 5, 1993
    Assignee: T. J. Gundlach Machine Company
    Inventors: Theodore F. Gundlach, James D. Fraser, Patrick W. Ryan, Randall S. Shinn