Patents by Inventor Sven-Erik Pohl

Sven-Erik Pohl 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).

  • FREE-PISTON DEVICE AND METHOD FOR OPERATING A FREE-PISTON DEVICE
    Publication number: 20090101005
    Abstract: There is provided a free-piston device, comprising at least one piston chamber in which at least one piston assembly is arranged for linear displacement, the at least one piston assembly being drivable under the action of a medium which expands in an expansion space, and the at least one piston chamber having a resilience space, in which a compressible gas is contained for exerting a returning force on the at least one piston assembly, and at which a control member is arranged for controlling the returning force while the free-piston device is in operation. A method for operating a free-piston device is also proposed.
    Type: Application
    Filed: December 19, 2008
    Publication date: April 23, 2009
    Applicant: UMC UNIVERSAL MOTOR CORPORATION GMBH
    Inventors: Sven-Erik Pohl, Cornelius Ferrari