Patents by Inventor Knud Lembke

Knud Lembke 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).

  • Hydraulically controllable globe valve
    Patent number: 6601552
    Abstract: A hydraulically controllable globe valve having a stem piston to which pressure can be applied by a spring connected to a pressure source, with the stem piston being able to move from a first end position in the direction of a second end position. Pressure control means are provided which maintain a constant pressure of the hydraulic spring means on the stem piston while the latter moves from the first end position in the direction of the second end position by connecting the hydraulic spring means to a pressure source during a variable portion of the valve lift. The valve can be used, for example, as a gas exchange valve in a reciprocating engine.
    Type: Grant
    Filed: October 31, 2002
    Date of Patent: August 5, 2003
    Assignee: DaimlerChrysler AG
    Inventors: Michael Kübel, Knud Lembke, Ulrich Letsche, Rudolf Thom
  • Hydraulically controllable globe valve
    Publication number: 20030047153
    Abstract: A hydraulically controllable globe valve having a stem piston to which pressure can be applied by a spring connected to a pressure source, with the stem piston being able to move from a first end position in the direction of a second end position. Pressure control means are provided which maintain a constant pressure of the hydraulic spring means on the stem piston while the latter moves from the first end position in the direction of the second end position by connecting the hydraulic spring means to a pressure source during a variable portion of the valve lift. The valve can be used, for example, as a gas exchange valve in a reciprocating engine.
    Type: Application
    Filed: October 31, 2002
    Publication date: March 13, 2003
    Inventors: Michael Kubel, Knud Lembke, Ulrich Letsche, Rudolf Thom
  • Hydraulically controllable globe valve
    Patent number: 6491007
    Abstract: A hydraulically controllable globe valve having a stem piston to which pressure can be applied by a spring connected to a pressure source, with the stem piston being able to move from a first end position in the direction of a second end position. Pressure control means are provided which maintain a constant pressure of the hydraulic spring means on the stem piston while the latter moves from the first end position in the direction of the second end position by connecting the hydraulic spring means to a pressure source during a variable portion of the valve lift. The valve can be used, for example, as a gas exchange valve in a reciprocating engine.
    Type: Grant
    Filed: November 19, 1999
    Date of Patent: December 10, 2002
    Assignee: Daimler Chrysler AG
    Inventors: Michael Kübel, Knud Lembke, Ulrich Letsche, Rudolf Thom