Patents by Inventor Andreas Appenzeller

Andreas Appenzeller 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).

  • Screwdriver with a screw holder
    Patent number: 6971293
    Abstract: A screwdriver is disclosed having a shaft with a screw holder. The screw holder is receivable in a recess in a screw head, and has a spring element which can be elastically deformed transverse to the longitudinal axis of the shaft. A portion of the spring element may be engaged with a bore in the shaft and the bore may penetrate the front end of the shaft. The elastic segment may be disposed in a groove parallel to the longitudinal axis of the shaft segment so that, in the unstressed state of the spring element, at least a portion of the elastic segment protrudes beyond the cross-sectional surface of the shaft segment to engage a surface of the screw head recess to thereby retain the screw on the shaft.
    Type: Grant
    Filed: January 12, 2004
    Date of Patent: December 6, 2005
    Assignee: Synthes (U.S.A.)
    Inventors: Andreas Appenzeller, Stephan Rupp, Romano Mark
  • Screwdriver with a screw holder
    Publication number: 20050178252
    Abstract: A screwdriver is disclosed having a shaft with a screw holder. The screw holder is receivable in a recess in a screw head, and has a spring element which can be elastically deformed transverse to the longitudinal axis of the shaft. A portion of the spring element may be engaged with a bore in the shaft and the bore may penetrate the front end of the shaft. The elastic segment may be disposed in a groove parallel to the longitudinal axis of the shaft segment so that, in the unstressed state of the spring element, at least a portion of the elastic segment protrudes beyond the cross-sectional surface of the shaft segment to engage a surface of the screw head recess to thereby retain the screw on the shaft.
    Type: Application
    Filed: January 12, 2004
    Publication date: August 18, 2005
    Inventors: Andreas Appenzeller, Stephan Rupp, Romano Mark