Patents by Inventor Ralph Soell

Ralph Soell 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).

  • Tool for screwing a piston onto the piston rod of a hydraulic cylinder and hydraulic cylinder
    Patent number: 8402879
    Abstract: The present invention relates to a tool for screwing a piston onto the piston rod of a hydraulic cylinder, in particular of a hydraulic cylinder with a piston diameter of more than 200 mm, comprising a first tool element with connecting elements for releasable connection with the piston and a second tool element with connecting elements for releasable connection with the piston rod, which is rotatable with respect to the first tool element, wherein the torque necessary for screwing together piston and piston rod can be applied onto the piston and the piston rod via the connecting elements by rotating the first tool element against the second tool element.
    Type: Grant
    Filed: June 24, 2009
    Date of Patent: March 26, 2013
    Assignee: Liebherr-Hydraulikbagger GmbH
    Inventors: Hans-Peter Lavergne, Ralph Soell, Christoph Guhl
  • Tool for Screwing a Piston onto the Piston Rod of a Hydraulic Cylinder and Hydraulic Cylinder
    Publication number: 20100018083
    Abstract: The present invention relates to a tool for screwing a piston onto the piston rod of a hydraulic cylinder, in particular of a hydraulic cylinder with a piston diameter of more than 200 mm, comprising a first tool element with connecting elements for releasable connection with the piston and a second tool element with connecting elements for releasable connection with the piston rod, which is rotatable with respect to the first tool element, wherein the torque necessary for screwing together piston and piston rod can be applied onto the piston and the piston rod via the connecting elements by rotating the first tool element against the second tool element.
    Type: Application
    Filed: June 24, 2009
    Publication date: January 28, 2010
    Applicant: Liebherr-Hydraulikbagger GmbH
    Inventors: Hans-Peter Lavergne, Ralph Söll, Christoph Guhl