Patents by Inventor Reinhold Roedel

Reinhold Roedel 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 and circuit arrangement for detecting motion, direction and position of a part driven by an electric motor
    Publication number: 20020008483
    Abstract: An electric motor for driving a component, such as a vehicle window lifter or a machine tool, functions as a generator, when the motor drive voltage is switched off and the motor is short circuited. The motor keeps running due to inertia or other influences. During this period after switch-off a generator voltage and respective generator current are produced. The generator current is measured for various purposes, preferably in combination with a measured r.p.m. signal. The generator current signal alone, or in combination with the r.p.m. signal, is evaluated to provide information regarding the motion of the driven component including information regarding the motion direction and position of the component.
    Type: Application
    Filed: July 23, 2001
    Publication date: January 24, 2002
    Inventors: Georg Kaeufl, Erwin Kessler, Erich Liepold, Werner Pollersbeck, Reinhold Roedel, Wolfgang Schulter, Klaus Spreng