Patents by Inventor Valter Bohm

Valter Bohm 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).

  • Valve closure gate assembly for foundry ladles
    Patent number: 4720083
    Abstract: The present invention relates to the foundry industry and solves the problem of extended service life of valve closure gate assemblies for foundry ladles. The valve closure gate assembly of the present invention comprises two mutually slidable heat-resistant gates furnished with a protecting layer of an oxide refractory material and having flow-through rings made from an oxide refractory material disposed in the openings of the gates. The respective upper and lower surfaces of the rings are coated with a layer of refractory material.
    Type: Grant
    Filed: April 17, 1984
    Date of Patent: January 19, 1988
    Assignee: Ceskoslovenska akademie ved
    Inventors: Karel Zverina, Petr Kroupa, Josef Szabo, Veslav Maroszczyk, Valter Bohm, Antonin Cieslar