Patents by Inventor Roalda B. Isakova

Roalda B. Isakova 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: 4264417
    Abstract: A method of electrochemical processing comprises the steps as follows: maintaining a variable gap between a processing electrode and a work-piece, having a value equal to a minimum permissible gap corresponding to processing conditions; with the gap value reaching a critical value, moving the processing electrode to obtain a gap approximately equal to or less than the critical value; applying a train of voltage pulses; and changing the length of each pulse and/or the space interval between pulses. When the space interval becomes equal to a value commensurate with the time of withdrawal of the processing electorode, a single voltage pulse is applied.
    Type: Grant
    Filed: December 19, 1979
    Date of Patent: April 28, 1981
    Inventors: Valadimir S. Vasiliev, Genrikh A. Alexeev, Viktor K. Nastasy, Roalda B. Isakova, Abram L. Livshits, Jury F. Prasolov, Alexandr I. Safronov
  • 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 .multidot.cm.sup.-1.The 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