Patents by Inventor Vasily Y. Dubovetsky

Vasily Y. Dubovetsky 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).

  • Method for welding girth joints in pipe lines
    Patent number: 4336436
    Abstract: A method and apparatus for welding girth joints in pipelines using two welding heads comprises the steps of moving each of the welding heads upwards around the pipeline along the respective section of the girth joint, feeding a welding wire to each of the welding heads so that the welding wire is fed substantially tangentially with respect to the surface of the pipe, and forming a circumferential weld by moulding it to hold the molten metal of the welding bath in the welding zone. An apparatus for carrying out the method for welding girth joints in pipelines comprises an annular track structure having at least two carriages mounted thereon which are connected with drives adapted to impart a translatory motion to the carriages. Each of the carriages carries a welding head provided with a welding wire feeder and a weld moulding member arranged opposite to the joint being welded.
    Type: Grant
    Filed: January 29, 1979
    Date of Patent: June 22, 1982
    Inventors: Vasily Y. Dubovetsky, Leonid N. Kopylov, Valentin A. Kotov, Jury I. Saprykin, Vladimir I. Slepchenko, Boris E. Paton, Igor K. Pokhodnya, Vladimir E. Paton, Mikhail G. Belfor, Efim Y. Leschinsky, Andrei N. Kutovoi, Mikhail R. Unigovsky, Veniamin S. Rotenfeld, Valery N. Shlepakov, Jury A. Gavriljuk, Alexandr G. Mazel, Mark Z. Sheinkin, Orest M. Serafin