Patents by Inventor Rodger Rene Alleweireldt

Rodger Rene Alleweireldt 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).

  • Process for the fabrication of monocrystalline castings
    Patent number: 5899257
    Abstract: A process and apparatus for fabricating monocrystalline castings are disced in which molten metal is poured into a mold having vertically arranged, individual mold cavities, the solidification front is controlled to progress vertically upwardly from the bottom, and a single crystal grain is selected by a selection device placed in the lower part of the mold. The invention consists in directly superposing a multiplicity of individual mold cavities one above the other in a string, several such strings capable of being placed in parallel between a common metal sprue cup and a chilled plate to increase production capacities.
    Type: Grant
    Filed: September 28, 1983
    Date of Patent: May 4, 1999
    Assignee: Societe Nationale D'Etude et de Construction de Moteurs D'Aviation
    Inventors: Rodger Rene Alleweireldt, Jacques Leopold Emile Grammagnac, Jean-Marc Clement Francis Theret