Patents by Inventor Hermann Krautkramer

Hermann Krautkramer 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).

  • Gas spring
    Patent number: 4702463
    Abstract: A gas spring for damping structural components, for example of a car, comprises two cylinders filled with gas, of which one cylinder is provided with a first piston and is movable in the other cylinder. The other cylinder has a piston rod extended centrally thereof and passing through the first piston. The piston rod carries at the free end thereof a second piston movable within the first cylinder.
    Type: Grant
    Filed: June 27, 1985
    Date of Patent: October 27, 1987
    Inventor: Hermann Krautkramer