Patents by Inventor Vladimir I. Dombrovsky

Vladimir I. Dombrovsky 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).

  • Device for heating air by flue gases in steam boilers and furnaces
    Patent number: 4452181
    Abstract: A device for heating air by flue gases in steam boilers and furnaces, comprises a supply flue, sections mating therewith, and a device for protection of heat-exchange tubes against abrasive wear arranged in the flue. Each section comprises heat-exchange tubes attached to tube plates. The device for protection of the heat-exchange tubes against abrasive wear incorporates at least one screen formed by corrugated sheets facing each other and mating along the lines of contact of sheet convex portions, whereby cells are made up.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: June 5, 1984
    Inventors: Adolf U. Lipets, Mikhail I. Nekrasov, Alexei Z. Fedosov, Vyacheslav P. Nikolaev, Viktor A. Golev, Nikolai M. Kurshin, Ivan N. Rozov, Ivan A. Sotnikov, Vladimir G. Ovchar, Alexandr G. Popov, Anatoly A. Vasiliev, Alexei D. Postnikov, Vladimir I. Dombrovsky, Vladimir K. Evstafiev