Patents by Inventor Ralf Kledig

Ralf Kledig 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).

  • Publication number: 20020179891
    Abstract: The invention relates to a jack for manhole covers or the like, said jack having wheels (36) disposed in the lower region of a hand lever (38) laterally on a transversely extending axle, and said jack having a rigidly forwardly projecting lifting arm (31) which has at least one hook (43), protruding on its underside, to hook in a cover opening. A simple lifting of the cover is achieved when a support device (40, 46, 39), which is also provided in the lower region of the hand lever (38), is mounted in front of the wheels (36), by means of which device the jack (1) is supported when attached to the cover (2) prior to the lifting thereof and in a first lifting phase externally of the cover edge, while the wheels (36) are off the ground (FIG. 1).
    Type: Application
    Filed: January 2, 2002
    Publication date: December 5, 2002
    Inventors: Hans Schuller, Ralf Kledig