Patents by Inventor Douglas A. Schieber

Douglas A. Schieber 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).

  • Vibratory conveyor system for adjusting the periodic resultant forces supplied to a conveyor trough
    Patent number: 5615763
    Abstract: A vibratory system for changing or maintaining a resultant vibratory force supplied to a spring support conveyor trough has a pair of spaced, parallel shafts and phase elements for supplying a resultant to force to the trough. A sensing device generates a signal corresponding to the real time phase angle between the phase elements. This signal is compared to a signal corresponding to the desired phase angle and the real time phase angle is essentially the same as the desired phase angle thereby providing the desired resultant force to the conveyor.
    Type: Grant
    Filed: August 18, 1995
    Date of Patent: April 1, 1997
    Assignee: Carrier Vibrating Equipment, Inc.
    Inventor: Douglas A. Schieber