Patents by Inventor Pavel E. Petrov

Pavel E. Petrov 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).

  • Process for making brass-plated long-size articles
    Patent number: 4502895
    Abstract: An apparatus for making a brass-plated long-size article by a process for making a brass-plated long-size article comprises a bath 3 with molten inorganic salts, wherein the surface of a blank 1 is degreased and etched. Then the surface of the blank 1, after deposition of a layer of copper, is coated with a layer of zinc in a unit 8 for electrolytical coating of the surface of the blank 1 with a layer of zinc and thermodiffusive treatment and tempering of the blank 1 are effected in a bath 11 with molten salts.
    Type: Grant
    Filed: March 23, 1982
    Date of Patent: March 5, 1985
    Assignee: Vsesojuzny Nauchno-Issledovatelsky Institut Metiznoi Promyshlennosti
    Inventors: Alexandr V. Trubitsyn, Georgy M. Fomin, Ivan N. Nedovizy, Pavel E. Petrov, Petr I. Denisov, Sergei A. Tulupov, Stepan T. Chursin, Vladimir N. Kuptsynov, Adolf K. Merkulov, Lev G. Stobbe
  • Coiling apparatus for long-size products
    Patent number: 4488688
    Abstract: A coiling apparatus for long-size products comprising an assembly for drawing long-size products and an assembly for coiling the long-size products, wherein said assemblies are disposed separately in the direction of movement of the long-size products. The assembly for drawing the long-size products incorporates at least one drive shaft and at least one spring-loaded roll wherebetween the long-size product moves, and also comprises a fork holding the spring-loaded roll, and a guide rack wherein the fork is inserted.
    Type: Grant
    Filed: March 23, 1982
    Date of Patent: December 18, 1984
    Assignee: Vsesojuzny Nauchno-Issledovatelsky Institut Metiznoi Promyshlennosti Vniimetiz
    Inventors: Alexandr V. Trubitsin, Mikhail G. Polyakov, Georgy M. Fomin, Petr I. Denisov, Pavel E. Petrov, Petr P. Pomelnikov