Patents by Inventor Mark A. Shaforenko

Mark A. Shaforenko 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 manufacturing tangential expanders for oil control piston rings
    Patent number: 4173878
    Abstract: According to the claimed method a round wire is first flattened and then formed into a serpentine flat spring. The segment portions of this spring are bent up in the form of thrust shoulders and calibrated for height. The shaped spring is coiled into a spiral on a mandrel, compressed and heat-treated before cutting it into individual tangential expanders.
    Type: Grant
    Filed: January 17, 1978
    Date of Patent: November 13, 1979
    Inventors: Rusaam S. Nemets, Efim S. Gorbulev, Veniamin A. Parygin, Jury M. Kontsov, Viktor P. Moldavanov, Mark A. Shaforenko, Alexei K. Ignatiev, Gennady S. Zaikovsky, Mikhail I. Volnyakov