Patents by Inventor Andrei V. Bondaruk

Andrei V. Bondaruk 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 of flash-butt resistance welding of a batch of like parts in pairs
    Patent number: 4940876
    Abstract: A method of flash-butt resistance welding of a batch of like parts in pairs consists in that during flashing off of workpieces (1,2) they are brought apart or together depending on the resulting resistance obtained by comparison of the actual resistance between the workpieces (1,2) being welded with the specific short-circuit impedance of the welding circuit, which is determined during the upsetting of the preceeding pair of workpieces (1,2) after the welding current reaches a constant level.
    Type: Grant
    Filed: May 15, 1989
    Date of Patent: July 10, 1990
    Inventors: Sergei I. Kuchuk-Yatsenko, Mikhail V. Bogorsky, Daniil I. Belyaev, Andrei V. Bondaruk, Nikolai D. Goronkov