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Douglas A. Keller, Kalamazoo US
Douglas A. Keller, Kalamazoo, MI US
| Patent application number | Description | Published |
|---|---|---|
| 20080199307 | Flexible, high-temperature ceramic seal element - A ceramic seal element ( | 08-21-2008 |
| 20080199661 | Thermally insulated CMC structure with internal cooling - An insulated CMC structure ( | 08-21-2008 |
| 20080273967 | Ring seal for a turbine engine - A turbine engine ring seal for sealing gaps between turbine engine outer seal segments and turbine blade tips. The turbine engine ring segment may have an inner radial surface that defines a portion of a gap gas flow path where the inner radial surface may be formed of an abradable ceramic coating and includes a plurality of gas flow protrusions that are oriented transverse to the gap gas flow path. The gas flow protrusions may induce vortices in the gas flow in the gap gas flow path. Additionally, the gas flow protrusions may be series of peaks and depressions between two adjacent peaks, where the depressions have an approximate semicircular shape. The distance between two adjacent peaks may be equal or greater than a width of the depression and the height of a single peak may be six percent or greater than the distance between two adjacent peaks. | 11-06-2008 |
| 20090010755 | Ceramic matrix composite attachment apparatus and method - An attachment method and flange for connecting a ceramic matrix composite (CMC) component, such as a gas turbine shroud ring ( | 01-08-2009 |
| 20090071160 | Wavy CMC Wall Hybrid Ceramic Apparatus - A ceramic hybrid structure ( | 03-19-2009 |
| 20090252907 | HYBRID CERAMIC STRUCTURE WITH INTERNAL COOLING ARRANGEMENTS - A structure for use in high temperature applications is provided. The structure may include an inner ceramic matrix composite (CMC) material ( | 10-08-2009 |
| 20090260364 | Apparatus Comprising a CMC-Comprising Body and Compliant Porous Element Preloaded Within an Outer Metal Shell - An apparatus for a gas turbine engine, such as a transition ( | 10-22-2009 |
| 20100074726 | GAS TURBINE AIRFOIL - A gas turbine airfoil ( | 03-25-2010 |