Patents by Inventor Rolf Krafzig

Rolf Krafzig 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: 4096928
    Abstract: A valve assembly for a shock absorber which has separate first and second channels for the opposite flow directions of the damping medium contained in the shock absorber includes at least one first valve and one second valve having a common shaft and arranged to control the first channel and the second channel, respectively. The first valve includes at least one resilient valve disc and a first spring biasing the resilient valve disc with the interposition of a valve body. The second valve includes a closing disc and a second spring urging the closing disc into a closed position. The resilient disc and the closing disc surround the common shaft. The valve assembly further has an axially displaceable valve cage being common to the first and second valves. The valve cage has a cylindrical portion surrounding the resilient valve disc for a centered guiding thereof. The cylindrical portion has an edge face which serves as an abutment for cooperating with the closing disc.
    Type: Grant
    Filed: June 14, 1977
    Date of Patent: June 27, 1978
    Assignee: Volkswagenwerk Aktiengesellschaft
    Inventors: Rolf Krafzig, Paul Langer, Erhard Leppich