Patents by Inventor Andrew M. Aettel

Andrew M. Aettel 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).

  • METHOD AND APPARATUS TO MONITOR OPERATION OF AN AUXILIARY HYDRAULIC PUMP IN A TRANSMISSION
    Publication number: 20080064562
    Abstract: The invention comprises a method and apparatus to monitor operation of an electrically-actuated hydraulic pump selectively operative to supply pressurized fluid to a hydraulic circuit for a transmission device operably connected to an internal combustion engine of a vehicle. It includes monitoring vehicle operation and passively and intrusively monitoring hydraulic circuit pressure. The hydraulic pump is functioning properly when the monitored pressure in the hydraulic circuit exceeds a threshold. A fault related to the hydraulic circuit is identified when the monitored pressure in the hydraulic circuit does not exceed the threshold.
    Type: Application
    Filed: September 13, 2006
    Publication date: March 13, 2008
    Inventors: Andrew M. Aettel, Peter E. Wu, Rick H. Schroeder, Michael J. Taljonick