Patents by Inventor FRANCO ZEMCZAK

FRANCO ZEMCZAK 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).

  • Oil supply device for an internal combustion engine
    Patent number: 8973550
    Abstract: An oil supply device for a crankcase of an internal combustion engine feeds oil from a reservoir to a main oil duct of the crankcase. A filter switching device allows a selection from a plurality of oil filter units in the flow path of the oil to be selectively connected into the oil flow path, to set a proportion of the oil filter units to active and a proportion of the oil filter units to passive. A switching unit switches between the active and passive states and opens up a pressurized oil flow path to the active oil filter unit(s) and also a drainage flow path between the passive oil filter unit(s) and a drainage duct. An evacuation device drains or evacuates oil from the drainage duct which has accumulated at the passive oil filter unit(s).
    Type: Grant
    Filed: January 17, 2012
    Date of Patent: March 10, 2015
    Assignee: MAN Truck & Bus AG
    Inventors: Jens Tuerk, Franco Zemczak, Mark Zimmermann, Martin Boehm
  • OIL SUPPLY DEVICE FOR AN INTERNAL COMBUSTION ENGINE, IN PARTICULAR FOR A CRANKCASE OF AN INTERNAL COMBUSTION ENGINE
    Publication number: 20120180751
    Abstract: An oil supply device for a crankcase of an internal combustion engine feeds oil from a reservoir to a main oil duct of the crankcase. A filter switching device allows a selection from a plurality of oil filter units in the flow path of the oil to be selectively connected into the oil flow path, to set a proportion of the oil filter units to active and a proportion of the oil filter units to passive. A switching unit switches between the active and passive states and opens up a pressurized oil flow path to the active oil filter unit(s) and also a drainage flow path between the passive oil filter unit(s) and a drainage duct. An evacuation device drains or evacuates oil from the drainage duct which has accumulated at the passive oil filter unit(s).
    Type: Application
    Filed: January 17, 2012
    Publication date: July 19, 2012
    Applicant: MAN TRUCK & BUS AG
    Inventors: Jens Türk, FRANCO ZEMCZAK, MARK ZIMMERMANN, Martin Böhm