Patents by Inventor Wayne E. Stollenwerk

Wayne E. Stollenwerk 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).

  • INDUCTIVE LOOP PRESENCE DETECTOR
    Publication number: 20110251809
    Abstract: An inductive loop presence detector for sensing objects, such as rail cars, containing one or more sensing loops. The inductive loop presence detector includes a backup power supply that is connected to a control unit of the detector to power the control unit during an interruption in the line voltage. The backup power supply includes batteries or capacitors that power the control unit when the line voltage is interrupted. The control unit of the inductive loop presence detector operates in a lower power mode when the control unit is supplied with power from the backup power supply. The control unit operates to auto-tune and supply power to the sensing loops to operate at the most desirable frequency based upon the inductance of the sensing loops.
    Type: Application
    Filed: October 12, 2010
    Publication date: October 13, 2011
    Applicant: AAA SALES & ENGINEERING, INC.
    Inventor: Wayne E. Stollenwerk