Patents by Inventor Eckerhard Strotgen

Eckerhard Strotgen 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).

  • Hand-guided machine tool comprising a radial blower
    Patent number: 5315193
    Abstract: A hand-guidable electric machine tool has a casing having an air guide duct, a tool part, a motor for driving the tool part, and a radial blower for cooling the motor, the radial blower having a fan wheel for forming a static pressure differential. The air guide duct has an inlet opening and an outlet opening and continuously widening in cross-section in a direction of the outlet opening. The cross-section measured in radial direction of the inlet opening of the air guide duct is smaller than the cross-section of the outlet opening.
    Type: Grant
    Filed: July 15, 1992
    Date of Patent: May 24, 1994
    Assignee: Robert Bosch GmbH
    Inventors: Martin Kummer, Werner Rieker, Eckerhard Strotgen, Eberhard Prahst