Patents by Inventor James A. Volrath

James A. Volrath 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).

  • Vertical lift system for delivering sheets in stacks
    Patent number: 5626335
    Abstract: A system for continuously delivering sheets which are provided in successive discrete stacks includes a stack infeed conveyor which includes a cushioned upper holddown belt synchronized to operate with a lower supporting infeed conveyor and to provide stability to stacks of relatively short sheets. A continuous lift apparatus receives successive stacks from the infeed system and utilizes a dual lift apparatus to provide the continuous delivery of stacked sheets which are individually fed from the top of the continuously ascending stack.
    Type: Grant
    Filed: February 1, 1996
    Date of Patent: May 6, 1997
    Assignee: Marquip, Inc.
    Inventors: Raymond E. Radwanski, John J. Kondratuk, Carl R. Marschke, James A. Volrath