Patents by Inventor Roger W. Brook

Roger W. Brook 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: 5954989
    Abstract: A refractory pouring member such as a tundish nozzle or tube and integral plate for use in a slide gate valve or stopper rod valve system in continuous steel casting has selected portions made from an erosion and abrasion resistant refractory composition. The composition comprises: up to 95 wt. % Al.sub.2 O.sub.3 ; up to 15 wt. % C; up to 10 wt. % SiO.sub.2 ; and up to 3 wt. % antioxidant. At least an upper surface of the slide plate is formed from the erosion and abrasion resistant refractory composition to prevent in-service wear of the slide plate and a selected portion of the tube bore is formed of the erosion and abrasion resistant material, preferably extending a distance of about 50 to 300 mm from the top of the slide plate to protect the tube bore from the erosive action within a turbulent flow zone of molten metal which exists when the slide gate valve is in a throttling mode of operation.
    Type: Grant
    Filed: March 20, 1997
    Date of Patent: September 21, 1999
    Assignee: Vesuvius Crucible Company
    Inventors: Roger W. Brook, Quentin K. Robinson