Patents by Inventor Max Bernhard Ulrich

Max Bernhard Ulrich 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: 4101985
    Abstract: A hip-joint prosthesis has a ball head shaped to fit in an acetabulum, an elongated shaft adapted to fit in and between two opposite sides of a medullary cavity of a femur, and a stem between and connecting the head to one end of the shaft. This shaft is curved in a plane and has a concave longitudinal edge and a convex longitudinal edge. A laterally projecting shoulder between the stem and the shank is engageable against a sawed-off end of a femur in whose medullary cavity the shaft is engaged. The shaft is formed on its concave edge at its two ends with inner and outer engagement surfaces of planar shape. Between these engagement surfaces on the convex side there is formed an intermediate engagement surface. When mounted in a femur the inner and outer engagement surfaces engage against one side of the medullary cavity and the intermediate engagement surface against the other for firm mounting of the shaft in the femur.
    Type: Grant
    Filed: March 18, 1977
    Date of Patent: July 25, 1978
    Inventors: Friedrich Baumann, Max Bernhard Ulrich