Patents by Inventor Eduard Y. Grodzinsky

Eduard Y. Grodzinsky 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).

  • Patent number: 4956056
    Abstract: A method of grinding includes the application to an abrasive wheel in a grinding zone of a pulse voltage, arranged out of the grinding zone is an electrode to which is applied a rectified voltage having an amplitude and a ripple factor ensuring formation of an oxide film on a surface of the wheel, and use is made of a coolant having a conductivity from 2.multidot.10.sup.-3 to 2.multidot.10.sup.-2 ohm.sup.-1 cm.sup.-1.
    Type: Grant
    Filed: March 20, 1989
    Date of Patent: September 11, 1990
    Inventors: Lidia S. Zubatova, Eduard Y. Grodzinsky, Ivan V. Shelyagin, Alexandr A. Zaitsev
  • Patent number: 4236985
    Abstract: The invention is applicable to the griding with current-conducting abrasive tools of works of current-conducting churlish materials, such as hard, magnetic and refractory alloys, and to cutter sharpening.The method according to the invention consists in applying voltage pulses to a tool and a work placed in a liquid medium with a conductance of 10.sup.-4 to 2.multidot.10.sup.-2 ohm.sup.-1 process of grinding the work and electric-erosion cleaning the tool is carried out at a pulse duration of 0.5 to 10 msec, pulse repetition frequency of 10 to 500 Hz, and amplitudie of pulses ranging from a minimum of 3 V to a maximum which is below a level required for a breakdown of the liquid medium between the tool and the work.Alternatively, simultaneously with machining the work the electric-erosion truing of the tool is performed with the use of a tool truing electrode.The tool truing electrode and the work are connected to the same pole of a power source.
    Type: Grant
    Filed: May 1, 1979
    Date of Patent: December 2, 1980
    Inventors: Eduard Y. Grodzinsky, Roalda B. Isakova, Lidia S. Zubatova, Anna T. Makonovitskaya, Aron K. Grinberg