Patents Represented by Attorney Larence A. Greenberg

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  • Electromagnetic drive device
    Patent number: 7750772
    Abstract: An electromagnetic drive system contains an armature that can be displaced along an axis. The armature contains a piston-shaped section. The piston-shaped section is guided in a cylindrical section of the stator. A recess extends through the piston-shaped section substantially in the direction of the axis. The incorporation of the recess results in that a fluid cushion that builds up in front of the piston-shaped section during rapid movement can be relieved through the piston-shaped section.
    Type: Grant
    Filed: May 9, 2006
    Date of Patent: July 6, 2010
    Assignee: Siemens Aktiengesellschaft
    Inventors: Jörg Hagen, Carsten Protze
  • Hydraulic control for rod drive for water-cooled nuclear reactors, especially heating reactors
    Patent number: 4826649
    Abstract: A hydraulic control rod drive for a water-cooled nuclear reactor includes a control valve assembly outside the reactor pressure vessel for influencing the fluid quantity on the pressure side of a fluid pump assembly for adjusting control rods in raising and lowering directions and to maintain a control rod position.
    Type: Grant
    Filed: June 11, 1987
    Date of Patent: May 2, 1989
    Assignee: Siemens Aktiengesellschaft
    Inventors: Pramod Batheja, Manfred hrlein, Peter Rau, Eduard Weber