Patents by Inventor Perry D. Thatcher

Perry D. Thatcher 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: 4062532
    Abstract: Apparatus for feeding and transporting blanks of corrugated paperboard and the like is disclosed wherein a stack of blanks is received on a blank feeding station having a first belt-over-roller conveyor which cooperates with an angularly inclined control gate of a gate assembly to feed blanks from the bottom of the stack beneath the control gate and effect shingling of the blanks, whereafter the blanks are transported to a receiving station such as the feed hopper of a printing press or the like. The control gate is adjustable to vary the shingling relationship of the blanks fed from the bottom of the stack and has a low friction surface thereon facilitating optimum operation.
    Type: Grant
    Filed: April 23, 1976
    Date of Patent: December 13, 1977
    Assignee: Koppers Company, Inc.
    Inventors: Jakob Peter, Perry D. Thatcher, Kenneth L. Steele