Patents by Inventor Wayne G. Lorenz

Wayne G. Lorenz 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).

  • Hybrid sweeper-scrubber control method and system
    Patent number: 9937918
    Abstract: The invention relates to a method and system for controlling an engine (552) in a sweeper-scrubber. An electrical system alternator (554) provides power to at least one cleaning function (576, 578, 580) of a self-propelled hybrid vehicle and to driven wheels. The operational load is monitored, and the running state of an internal combustion engine (552) is controlled based on the monitored operational load. A threshold charge, of an electrical system battery pack (556) is maintained.
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: April 10, 2018
    Assignee: NILFISK A/S
    Inventors: Kale R. Johnson, Hanafi Habbas, Wayne G. Lorenz
  • HYBRID SWEEPER-SCRUBBER CONTROL METHOD AND SYSTEM
    Publication number: 20140125122
    Abstract: The invention relates to a method and system for controlling an engine (552) in a sweeper-scrubber. An electrical system alternator (554) provides power to at least one cleaning function (576, 578, 580) of a self-propelled hybrid vehicle and to driven wheels. The operational load is monitored, and the running state of an internal combustion engine (552) is controlled based on the monitored operational load. A threshold charge, of an electrical system battery pack (556) is maintained.
    Type: Application
    Filed: April 20, 2012
    Publication date: May 8, 2014
    Applicant: Nilfisk-Advance ,Inc.
    Inventors: Kale R. Johnson, Hanafi Habbas, Wayne G. Lorenz