Patents by Inventor Gerhard Hahl

Gerhard Hahl 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).

  • Electromagnetically actuated valve, especially for hydraulic braking systems in motor vehicles
    Patent number: 6705589
    Abstract: The valve (10) has a seat valve (27) comprising a hollow cone-shaped valve seat (24) and an hemispherical shutoff element (26). An afflux bore (23) having contact with a pressure-medium inlet (19) discharges centrically into the valve seat (24). A solenoid armature (30) acting upon the seat valve (27) in opening fashion grips a push rod (25) comprising the shutoff element (26). The solenoid armature cooperates with a pole body (42) according to the flat-type armature principle. A preloaded return spring (39) acting on the seat valve (27) in closing fashion is arranged between the pole body (42) and the solenoid armature (30).
    Type: Grant
    Filed: July 8, 2002
    Date of Patent: March 16, 2004
    Assignee: Robert Bosch GmbH
    Inventors: Dirk Hofmann, Hans-Friedrich Schwarz, Gerhard Hahl, Valentin Schubitschew
  • Electromagnetically actuated valve, especially for hydraulic braking systems in motor vehicles
    Publication number: 20020179874
    Abstract: The valve (10) has a seat valve (27) comprising a hollow cone-shaped valve seat (24) and an hemispherical shutoff element (26). An afflux bore (23) having contact with a pressure-medium inlet (19) discharges centrically into the valve seat (24). A solenoid armature (30) acting upon the seat valve (27) in opening fashion grips a push rod (25) comprising the shutoff element (26), which said solenoid armature cooperates with a pole body (42) according to the flat-type armature principle. A preloaded return spring (39) acting on the seat valve (27) in closing fashion is arranged between the pole body (42) and the solenoid armature (30).
    Type: Application
    Filed: July 8, 2002
    Publication date: December 5, 2002
    Inventors: Dirk Hofmann, Hans-Friedrich Schwarz, Gerhard Hahl, Valentin Schubitschew