Patents by Inventor Arkady S. Malkin

Arkady S. Malkin 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 for manufacturing a piercing mandrel
    Patent number: 4370879
    Abstract: The invention is well adapted to the manufacture of water-cooled mandrels for use in a piercing mill. The method of the invention consists in that a cone-shaped cavity is formed in a blank by hot piercing, whereupon the blank thus formed is subjected to hot upset forging whereby it is reduced until its outer diameter at the end of the fitting section is in the range of from 0.9 to 1.02 times the diameter of the mandrel sizing band, the outer diameter of the mandrel working section and that of its nose being 0.9 to 1 times the diameters of the respective sections of the mandrel, the wall thickness in the area of the fitting section and that of the sizing band being from 0.7 to 1 times the thickness of the mandrel wall. Then, the fitting section is subjected to reduction effected concurrently with upset forging of the working section, this followed by final sizing of the mandrel setting cavity.
    Type: Grant
    Filed: August 26, 1980
    Date of Patent: February 1, 1983
    Inventors: Boris D. Kopysky, Viktor D. Dmitriev, Georgy I. Khaustov, Viktor M. Brodsky, Vitaly A. Surzhikov, Evgeny I. Semenov, Vladimir G. Chus, Viktor A. Misjulya, Leonid F. Kandyba, Igor P. Ivanov, Grigory I. Bezzub, Yasha F. Goldenberg, Ilya S. Zonnenberg, Alexandr G. Paly, Arkady S. Malkin