Patents by Inventor Ivan A. Tabunschik

Ivan A. Tabunschik 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).

  • Arc-welding monitor
    Patent number: 4996409
    Abstract: The arc-welding monitor has a weld power supply, units for generating signals proportional to welding current and voltage, an audio-signal generator, welding current and voltage comparators and a monitoring sequence logic analyzer having a signal switch responsive to variations of monitored quantities, which is connected to the outputs of said welding current and voltage comparators, a signal switch responsive to incremental changes in monitored parameters, and welding current and voltage adders. One input of each adder is connected to the outputs of said units for generating signals proportional to welding current and voltage, respectively, while the second input of each adder is combined with the input of the corresponding comparator, the outputs thereof being connected to the inputs of the signal switch responsive to incremental changes in monitored parameters.
    Type: Grant
    Filed: August 25, 1989
    Date of Patent: February 26, 1991
    Inventors: Boris E. Paton, Vsevolod V. Vasiliev, Valentin A. Bogdanovsky, Konstantin V. Shelekhov, Viktor M. Gavva, Vladimir D. Bigdash, Ivan A. Tabunschik, Andrei P. Ilchishin