Patents by Inventor Richard L. Dechau

Richard L. Dechau 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).

  • Systems and methods for dynamically setting air system pressures based on real time sheet acquisition time data
    Patent number: 6279896
    Abstract: A sheet feeder feeds sheets separated from a stack to a feed head which is translatable toward take away nip rolls. The sheets are separated from the stack by fluffers and acquired by an acquisition surface of the feed head which is in communication with a vacuum pressure. An air knife is used, in conjunction with a corrugation surface, to separate any secondarily acquired sheets from the acquisition surface. The time for acquiring the sheet is determined from the opening of a vacuum valve in communication with the feed head to the acquiring of the sheet by the acquisition surface. The time for acquiring the sheets is dependent on the sheet characteristics.
    Type: Grant
    Filed: October 12, 1999
    Date of Patent: August 28, 2001
    Assignee: Xerox Corporation
    Inventors: Michael J. Linder, Kenneth P. Moore, Richard L. Dechau, William R. Haag
  • Adjusting air system pressures stack height and lead edge gap in high capacity feeder
    Patent number: 6186492
    Abstract: The present invention is directed to device for feeding sheets seriatim from a stack. The sheet feed device includes a variable vacuum source being selectively actuable to acquire and release a top sheet from a stack; a feedhead, attached to the vacuum source to acquire the top sheet of the stack; a device to determine a plurality of predetermined properties of the sheets and to generate signals indicative thereof; and a controller to receive the generated signals and generate a signal to selectively control the vacuum source.
    Type: Grant
    Filed: December 23, 1998
    Date of Patent: February 13, 2001
    Assignee: Xerox Corporation
    Inventors: Richard L. Dechau, William R. Haag, Michael J. Linder, Kenneth P. Moore