Patents by Inventor Markus Stemann

Markus Stemann 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).

  • Patent number: 8052155
    Abstract: A seal (1) includes a first component (7) and second component (9), the first component including a first material having a high thermal and oxidation and wear resistance, and the second component (9) including a second material that is different from the first material and has a high spring load maintenance. The seal (1) is applied to a combustion chamber for a gas turbine, where the first component (7) extends between the casing wall of the combustion chamber and adjacent liner segments (4). The spring load of the second component (9) provides a seal also in the case of vibrations in a combustion chamber. The lifetime of the seal (1) is increased due to the individual materials, which are optimally chosen for the functions of high thermal and wear resistance and spring load maintenance respectively. The seal is further applied to the sealing between adjacent stationary blade platforms in gas turbines.
    Type: Grant
    Filed: April 3, 2006
    Date of Patent: November 8, 2011
    Assignee: ALSTOM Technology Ltd.
    Inventors: Peter Graham Amos, Ian William Boston, Kennet W. Cornett, Jonas Hurter, Dominick Gregory More, Markus Stemann, Alexander Zagorskiy
  • Patent number: 7857579
    Abstract: A sealing element for sealing a component gap with respect to a flow, in particular for use in a fluid-flow machine, specifically in a turbomachine is provided. In addition a fluid-flow machine is provided including such a sealing element for sealing a component gap. The sealing element includes a hollow profile enclosing a cavity. Arranged in the hollow profile are a first opening and a second opening, which are spaced apart from each other in the longitudinal direction of the hollow profile. The first opening is formed as an inlet opening for a cooling fluid into the cavity of the hollow profile, the second opening is formed as an outlet opening for the cooling fluid from the cavity of the hollow profile. With the sealing element arranged in a fluid-flow machine, the sealing element can consequently be internally cooled by means of the cooling fluid. Furthermore, the sealing element uses the pressure gradient occurring in the flow in the direction of flow to form a stable cooling fluid flow.
    Type: Grant
    Filed: August 14, 2007
    Date of Patent: December 28, 2010
    Assignee: Alstom Technology Ltd.
    Inventors: Nicolas Johnson Campino, Jonas Hurter, Markus Stemann, Sergey Trifonov, Alexander Zagorskiy
  • Publication number: 20080213096
    Abstract: A sealing element for sealing a component gap with respect to a flow, in particular for use in a fluid-flow machine, specifically in a turbomachine is provided. In addition a fluid-flow machine is provided including such a sealing element for sealing a component gap. The sealing element includes a hollow profile enclosing a cavity. Arranged in the hollow profile are a first opening and a second opening, which are spaced apart from each other in the longitudinal direction of the hollow profile. The first opening is formed as an inlet opening for a cooling fluid into the cavity of the hollow profile, the second opening is formed as an outlet opening for the cooling fluid from the cavity of the hollow profile. With the sealing element arranged in a fluid-flow machine, the sealing element can consequently be internally cooled by means of the cooling fluid. Furthermore, the sealing element uses the pressure gradient occurring in the flow in the direction of flow to form a stable cooling fluid flow.
    Type: Application
    Filed: August 14, 2007
    Publication date: September 4, 2008
    Applicant: ALSTOM TECHNOLOGY LTD
    Inventors: Nicolas Johnson Campino, Jonas Hurter, Markus Stemann, Sergey Trifonov, Alexander Zagorskiy
  • Publication number: 20060255549
    Abstract: A seal (1) includes a first component (7) and second component (9), the first component including a first material having a high thermal and oxidation and wear resistance, and the second component (9) including a second material that is different from the first material and has a high spring load maintenance. The seal (1) is applied to a combustion chamber for a gas turbine, where the first component (7) extends between the casing wall of the combustion chamber and adjacent liner segments (4). The spring load of the second component (9) provides a seal also in the case of vibrations in a combustion chamber. The lifetime of the seal (1) is increased due to the individual materials, which are optimally chosen for the functions of high thermal and wear resistance and spring load maintenance respectively. The seal is further applied to the sealing between adjacent stationary blade platforms in gas turbines.
    Type: Application
    Filed: April 3, 2006
    Publication date: November 16, 2006
    Inventors: Peter Amos, Ian Boston, Kennet Cornett, Jonas Hurter, Dominick More, Markus Stemann, Alexander Zagorskiy