Patents by Inventor Rex B. Marks

Rex B. Marks 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: 4867824
    Abstract: This invention relates to industrial manufacture of composite tubes in a continuous fashion. The invention utilizes a segmented mandrel which proceeds as a train of endwise joined segments through a composite tube forming machine. Segments are added to and subtracted from the mandrel during manufacture of the tubes.
    Type: Grant
    Filed: July 16, 1985
    Date of Patent: September 19, 1989
    Assignee: Hercules Incorporated
    Inventors: Dee R. Gill, Rex B. Marks
  • Patent number: 4528060
    Abstract: This invention relates to industrial manufacture of composite tubes in a continuous fashion. The invention utilizes a segmented mandrel which proceeds as a train of endwise joined segments through a composite tube forming machine. Segments are added to and subtracted from the mandrel during manufacture of the tubes.
    Type: Grant
    Filed: December 30, 1983
    Date of Patent: July 9, 1985
    Assignee: Hercules Incorporated
    Inventors: Dee R. Gill, Rex B. Marks
  • Patent number: 4519869
    Abstract: This invention relates to industrial manufacture of composite tubes in a continuous fashion. The invention utilizes a segmented mandrel which proceeds as a train of endwise joined segments through a composite tube forming machine. Segments are added to and subtracted from the mandrel during manufacture of the tubes.
    Type: Grant
    Filed: February 28, 1982
    Date of Patent: May 28, 1985
    Assignee: Hercules Incorporated
    Inventors: Dee R. Gill, Rex B. Marks