Patents by Inventor Ilkka Leppänen

Ilkka Leppänen 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).

  • Patent number: 9316238
    Abstract: There is provided an apparatus, method, computer program product, and a kit and method for upgrading, an apparatus for moving cargo. A bus for transmission of electrical energy, at least one load connected to the bus, said at least one load configured to transform electrical energy from the bus into movement of a cargo with respect to the apparatus energy transforming means configured to transform energy between electrical energy of the bus and potential energy of a hydraulic accumulator, wherein the apparatus is configured to store electrical energy from the bus as potential energy to the hydraulic accumulator and to supply the potential energy stored in the hydraulic accumulator as electrical energy to the at least one load.
    Type: Grant
    Filed: November 19, 2012
    Date of Patent: April 19, 2016
    Assignee: Konecranes Global Corporation
    Inventors: Pekka Vainonen, Ilkka Leppänen, Jens Wachsmuth