Patents by Inventor Scott D. Graupner

Scott D. Graupner 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).

  • Method for improvement of involute and lead error in powder metal gears
    Patent number: 6134786
    Abstract: Gears, particularly spur gears, are produced by powder metal techniques with minimal lead line error and eccentricity, which gears are preformed from powder metal, sintered, hardened and thereafter have their involute surfaces regenerated by a hard hob with a negative rake on the hob teeth to provide gears having aligned involute surfaces between adjacent gear teeth and, between each gear tooth and the gear center line.
    Type: Grant
    Filed: January 29, 1999
    Date of Patent: October 24, 2000
    Assignee: Amsted Industries Incorporated
    Inventors: Scott D. Graupner, John Engquist, Steven T. Haye