Patents by Inventor Darrell E. Dube

Darrell E. Dube 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: 5407616
    Abstract: A method and apparatus is provided for generating a cylindrical composite preform. A tubular sleeve of cloth is maintained upon a mandrel which is passed through an injection chamber into which a thermosetting resin is injected. A small cavity within the resin injection chamber meters the resin into the cloth to assure complete and total impregnation thereof. The mandrel exits the resin injection chamber and enters an oven where the resin and fabric composite is B-staged. Subsequently, the composite sleeve is cut into appropriate lengths and removed from the mandrel for further processing for development of an end product.
    Type: Grant
    Filed: September 15, 1993
    Date of Patent: April 18, 1995
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Darrell E. Dube