Patents by Inventor Karl-Eberhard Geyer

Karl-Eberhard Geyer 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).

  • Rail vehicle for passenger transportation, especially for local traffic
    Patent number: 6820759
    Abstract: A rail vehicle for passenger transportation, especially for local traffic, is provided with shock absorption units (1) at at least one of its ends. Said shock absorber units (1) are supported on a sandwich part (2) containing deformable metallic foam, in the longitudinal direction of the vehicle, said sandwich part forming a partial area of the floor (3) of the driver compartment (4), as a supporting structural element.
    Type: Grant
    Filed: September 3, 2002
    Date of Patent: November 23, 2004
    Assignee: Siemens AG
    Inventors: Christian Schindler, Manfred Buerger, Karl-Eberhard Geyer, Ryszard Zielinski
  • Device for producing hot air curtains for door openings in local transit vehicle
    Patent number: 6234892
    Abstract: A device for producing air currents at door openings provided for passing people in local transit vehicles has a unit for forming an air current which forms a barrier against penetration of cold air into a space disposed behind a door opening, the unit being formed so that the air curtain is provided above a bottom end of the door opening and is limited to a height between at least one third and at most half a total height of the door opening so as to prevent penetration of cold air only in a lower zone of the door opening.
    Type: Grant
    Filed: August 11, 1999
    Date of Patent: May 22, 2001
    Assignee: Siemens Duewag Schienenfahrzeuge GmbH
    Inventors: Karl-Eberhard Geyer, Alfred Henatsch