Patents by Inventor Bernd Upphoff

Bernd Upphoff 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).

  • Orbital disk grinder
    Patent number: 5496207
    Abstract: An orbital disk grinder comprises a housing, grinding disk which can be applied to a working surface, a motor for moving the grinding disk so that the grinding disk gyrates in a circular orbit and simultaneously rotates about its axis, and speed control means operative for setting a speed of the grinding disk low when a normal force acting on the working surface is low, and high when the normal force acting on the working surface is high, so that a normal force acting on the grinding disk serves as a setting variable of the speed control means.
    Type: Grant
    Filed: October 8, 1993
    Date of Patent: March 5, 1996
    Assignee: Robert Bosch GmbH
    Inventors: Friedrich Hornung, Klaus Gu/ nther, Bernd Upphoff, Julian Pfaundler