Wiedemer
John Wiedemer, Glastonbury, CT US
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20090114797 | REFRACTORY METAL CORE COATINGS - A refractory metal core for use in a casting system has a coating for providing oxidation resistance during shell fire and protection against reaction/dissolution during casting. In a first embodiment, the coating includes at least one oxide and a silicon containing material. In a second embodiment, the coating includes an oxide selected from the group of calcia, magnesia, alumina, zirconia, chromia, yttria, silica, hafnia, and mixtures thereof. In a third embodiment, the coating includes a nitride selected from the group of silicon nitride, sialon, titanium nitride, and mixtures thereof. Other coating embodiments are described in the disclosure. | 05-07-2009 |
John D. Wiedemer, Glastonbury, CT US
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20090116953 | Turbine airfoil with platform cooling - Convective cooling of gas turbine engine airfoil platforms is enhanced by grooving the interface of the platforms with corresponding platform-to-platform seals, thereby accelerating cooling airflow over the platform surfaces. | 05-07-2009 |
Manfred Wiedemer, Ismaning DE
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20090133596 | PRINTING METHOD AND DEVICE USING CONTROLLED RADIATION OUTLETS FOR CREATING A STRUCTURE - In a method and device to generate a print image on a carrier material, a surface of a print carrier is covered with a layer of a fountain solution which is one of ink-repelling and ink-attracting. Ink-attracting and ink-repelling regions are generated via structuring. Ink is applied that adheres to the ink-attracting regions and that is not absorbed by the ink-repelling regions. The applied ink is transferred onto the carrier material. To structure, radiation of a lamp is directed toward the print carrier surface and is controlled via a control element with a control signal. | 05-28-2009 |