Patents by Inventor Boris Georgievich Ziselman

Boris Georgievich Ziselman 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 multilayer convex collared covers and bottoms for pressure vessels
    Patent number: 4101065
    Abstract: A method of manufacturing multilayer convex collared covers and bottoms for pressure vessels by assembling a pack of circular sheet blanks in the form of a truncated cone through the placement of one blank on another. The diameter of the upper smaller blank is equal to the developed length of the inner layer of the cover or bottom, the diameter of each subsequent blank being selected so that the base angle of the truncated cone would be 40.degree.-65.degree.. The blanks are then in assembled pack form welded to one another along their perimeter and stamped at a temperature of 800.degree.-1100.degree. C. Thereafter the stamped product is machined. The cover manufactured by this method has one ring at the external side and one ring at the internal side; the rings are welded at the flat side. The ring located on the internal side of the collar is provided with a circular sealing groove.
    Type: Grant
    Filed: November 18, 1976
    Date of Patent: July 18, 1978
    Inventors: Alexandr Nikolaevich Novikov, Evdokia Danilovna Kudrikova, Marat Moiseevich Shel, Pavel Gdalievich Pimshtein, Nikolai Kirillovich Globin, Boris Georgievich Ziselman, Vyacheslav Mikhailovich Potulov, Alexei Mikhailovich Maletin, deceased, by Ljubov Alexeevna Maletin, administrator, by Tatyana Alexeevna Maletina, administrator