Patents by Inventor Robert Amnerud

Robert Amnerud 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).

  • Hydraulic machine with oil dams
    Patent number: 8316995
    Abstract: A hydraulic machine includes a support structure and a rotating group rotatably mounted relative to the support structure. The rotating group includes a shaft and a cylinder barrel with a plurality of circumferentially spaced cylinder bores. Reciprocal pistons extend from the shaft with each one of the pistons extending into an associated one of the cylinder bores. A joining assembly joins the shaft and the cylinder barrel so that the shaft and the cylinder barrel rotate together. The hydraulic machine further includes at least one oil dam associated with the rotating group and adapted to trap hydraulic fluid used for lubricating portions of the joining assembly.
    Type: Grant
    Filed: December 22, 2009
    Date of Patent: November 27, 2012
    Assignees: Parker-Hannifin Corporation, Kinetics Drive Solutions, Inc.
    Inventors: John Czepak, Gerald Dyck, Mikael Karlsson, Robert Amnerud, Per-Ola Vallebrant
  • HYDRAULIC MACHINE WITH OIL DAMS
    Publication number: 20110147126
    Abstract: A hydraulic machine includes a support structure and a rotating group rotatably mounted relative to the support structure. The rotating group includes a shaft and a cylinder barrel with a plurality of circumferentially spaced cylinder bores. Reciprocal pistons extend from the shaft with each one of the pistons extending into an associated one of the cylinder bores. A joining assembly joins the shaft and the cylinder barrel so that the shaft and the cylinder barrel rotate together. The hydraulic machine further includes at least one oil dam associated with the rotating group and adapted to trap hydraulic fluid used for lubricating portions of the joining assembly.
    Type: Application
    Filed: December 22, 2009
    Publication date: June 23, 2011
    Inventors: John Czepak, Gerald Dyck, Mikael Karlsson, Robert Amnerud, Per-Ola Vallebrant