Patents by Inventor Carsten Mumm

Carsten Mumm 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).

  • Stator blade for a turbomachine, especially a stream turbine
    Publication number: 20110164970
    Abstract: The invention relates to a stator blade (4) of a turbomachine, especially of a steam turbine, which has the following geometric features. A lean curvature, a swept curvature, a twist in the radial direction of the respective blade (4), a hub-side circumferential step (14) which in the direction of flow (15) falls away inwards and radially to the rotational axis (8) of the turbomachine, a chord length (s) of the blade which varies over the radial extent of the stator blade (4), and also a cross-sectional profile of the blade (4) which varies over the radial extent of the stator blade (4).
    Type: Application
    Filed: December 23, 2010
    Publication date: July 7, 2011
    Applicant: ALSTOM Technology Ltd
    Inventors: Ralf Greim, Said Havakechian, Mourad Lakehel, Carsten Mumm
  • Stator blade for a turbomachine, especially a steam turbine
    Publication number: 20090257866
    Abstract: The invention relates to a stator blade (4) of a turbomachine, especially of a steam turbine, which has the following geometric features. A lean curvature, a swept curvature, a twist in the radial direction of the respective blade (4), a hub-side circumferential step (14) which in the direction of flow (15) falls away inwards and radially to the rotational axis (8) of the turbomachine, a chord length (s) of the blade which varies over the radial extent of the stator blade (4), and also a cross-sectional profile of the blade (4) which varies over the radial extent of the stator blade (4).
    Type: Application
    Filed: September 30, 2008
    Publication date: October 15, 2009
    Applicant: ALSTOM Technology Ltd.
    Inventors: Ralf Greim, Said Havakechian, Mourad Lakehel, Carsten Mumm
  • Output stage for an axial-flow turbine
    Patent number: 6099248
    Abstract: An output stage of an axial-turbine having a high channel divergence has a row of curved vanes and a row of narrowed twisted blades. The curved vanes include, in an axial direction, a positive sweep at their rotor-side end, head and a negative sweep at their stator-side end, with respect to a run of the rotor-side channel boundary. In an area of a stator-side channel boundary a negative sweepback predominates, so that between the curved vanes and the twisted blades an axial diffuser that steadily widens toward the stator-side channel boundary is formed. As a result, an increasing delay of an axial component of a flow agent can occur. The negative sweep at the stator-side end is formed such that at least one of a vane trailing edge and a vane leading edge is directed substantially perpendicularly to the stator-side channel boundary.
    Type: Grant
    Filed: November 12, 1998
    Date of Patent: August 8, 2000
    Assignee: ABB Alstom Power (Switzerland) Ltd
    Inventors: Carsten Mumm, Andreas Weiss