Patents by Inventor Willi Pfeiffer

Willi Pfeiffer 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: 4116200
    Abstract: A surgical milling tool with a hand-operated milling machine for milling the heads or sockets of bone joints of spherical shape is disclosed. The tool is formed of a hemispherical cup integrally formed with a cylindrical skirt and flange and is provided with a plurality of openings of semi-oval shape, each having a cutting edge arranged at the minor axis of the oval shape. The openings are situated such that, upon rotation of the cup, the cutting edges thereof overlap to provide a continuous cutting edge surface conforming generally to the shape of the cup.
    Type: Grant
    Filed: October 1, 1976
    Date of Patent: September 26, 1978
    Assignee: Aesculap-Werke Aktiengesellschaft vormals Jetter & Scheerer
    Inventors: Karl Braun, Rainer Lacher, Willi Pfeiffer