Patents by Inventor Ivan A. Koval

Ivan A. Koval 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).

  • Piston ring assembly with tangential expander
    Patent number: 4408770
    Abstract: A compound oil ring comprises flat rings and a tangential expander provided therebetween. The tangential expander comprises an annular integrally bent serpentine spring having vertically extending webs and horizontally extending flanges terminating in vertically extending bearing shoulders. Each vertically extending flange is bent so as to form at least one bend extending into the interior of the compound oil ring.
    Type: Grant
    Filed: April 14, 1982
    Date of Patent: October 11, 1983
    Inventors: Rusaam S. Nemets, Vladimir G. Kislov, Efim S. Gorbulev, Ivan A. Koval, Boris S. Eremenko, Felix A. Brainman, Jury M. Kontsov, Anatoly V. Adamovich, Lev A. Burov, Viktor P. Moldavanov
  • Weld deposition of metal other than aluminium onto aluminium-base alloy
    Patent number: 4382169
    Abstract: A method of depositing a layer of a metal other than aluminium onto an aluminium-base alloy with the use of surfacing material based on alloying element, wherein the deposition process is conducted at a heat output of the heat source of from 10.sup.3 to 10.sup.5 W per sq cm and the surfacing material being added to the welding pool in an amount of from 20 to 98% by weight, whereafter the metal thus deposited is remelted, with the weld pool volume being increased 1.2-10.0 times each time when the deposited metal is remelted.
    Type: Grant
    Filed: March 24, 1981
    Date of Patent: May 3, 1983
    Inventors: Daniil M. Rabkin, Vladimir R. Ryabov, Vsevolod N. Bernadsky, Anatoly D. Stretovich, Vladimir A. Kirpaty, Ivan A. Koval, Valery F. Zlobin, Arkady B. Menaker, Yakov I. Sherman, Nikolai N. Meleshko, Alexandr N. Shalai