Patents by Inventor Ernst Duerr

Ernst Duerr 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).

  • Expansion tank for vehicle cooling system
    Patent number: 8397681
    Abstract: An expansion tank (10) for a vehicle cooling system (18) of an engine using a liquid coolant (16) includes a tank body (12) defining a first volume (V1) containing coolant (16), wherein the coolant defines a variable coolant elevation level (CEL) within the tank body. The tank body (12) also defines an upper volume (20) containing air. A bladder (14) is disposed in the tank body (12) and defines a second volume (V2) containing air. The bladder (14) includes a flexible membrane (36) actuated by an actuator (46). When the engine is stopped or is below a predetermined temperature, the flexible membrane (36) is moveable to a first position (FP) which lowers the coolant elevation level (CEL), and when the engine is started or reaches a predetermined temperature, the flexible membrane (36) is moveable to a second position (SP) which raises the coolant elevation level. A communicating line (38) is in fluid communication between the upper volume (20) and the second volume (V2) to fluidly communicate air therebetween.
    Type: Grant
    Filed: September 2, 2009
    Date of Patent: March 19, 2013
    Assignee: International Engine Intellectual Property Company, LLC
    Inventors: Peter Popadiuc, Martin R. Zielke, Luis Carlos Cattani, Robert L. Rowells, George L. Banta, III, Ernst Duerr
  • EXPANSION TANK FOR VEHICLE COOLING SYSTEM
    Publication number: 20110048345
    Abstract: An expansion tank (10) for a vehicle cooling system (18) of an engine using a liquid coolant (16) includes a tank body (12) defining a first volume (V1) containing coolant (16), wherein the coolant defines a variable coolant elevation level (CEL) within the tank body. The tank body (12) also defines an upper volume (20) containing air. A bladder (14) is disposed in the tank body (12) and defines a second volume (V2) containing air. The bladder (14) includes a flexible membrane (36) actuated by an actuator (46). When the engine is stopped or is below a predetermined temperature, the flexible membrane (36) is moveable to a first position (FP) which lowers the coolant elevation level (CEL), and when the engine is started or reaches a predetermined temperature, the flexible membrane (36) is moveable to a second position (SP) which raises the coolant elevation level. A communicating line (38) is in fluid communication between the upper volume (20) and the second volume (V2) to fluidly communicate air therebetween.
    Type: Application
    Filed: September 2, 2009
    Publication date: March 3, 2011
    Applicant: International Engine Intellectual Property Company, LLC.
    Inventors: Peter Popadiuc, Martin R. Zielke, Luis Carlos Cattani, Robert L. Rowells, George L. Banta, III, Ernst Duerr