Patents by Inventor Jochen R/u/ sen

Jochen R/u/ sen 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: 4479550
    Abstract: A submerging ramming arrangement has a housing, an impacting body axially displaceable in the housing for delivering ramming impacts against a ramming pile, a hydraulic drive for displacing the impacting body in the housing, a hydraulic cylinder-and-piston unit arranged in an upper portion of the housing and having a cylinder, a piston sealingly displaceable in the cylinder and subdividing the same into first and second chambers, a piston rod connected with the piston and having a portion extending from the first chamber coaxially outwardly beyond the cylinder, a holding element for mounting the arrangement on a supporting element and provided on the outwardly extending portion of the piston, a hydraulic accumulator communicating with the first chamber of the cylinder-and-piston unit and arranged for receiving excess hydraulic medium under pressure, and an indicating element actuated by the piston of the cylinder-and-piston unit within a predetermined distance from a respective end of the cylinder-and-piston
    Type: Grant
    Filed: December 14, 1981
    Date of Patent: October 30, 1984
    Assignee: Koehring GmbH
    Inventors: Hans K/u/ hn, Jochen R/u/ sen