Patents by Inventor Alexandr N. Litvin

Alexandr N. Litvin 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).

  • Spring leaf with a diminishing thickness towards the ends thereof and having shoulders on opposite sides
    Patent number: 4927121
    Abstract: A spring leaf including a central section having a substantially constant thickness; a first terminal section integrally connected at a first end of the central section; the first terminal section having a thickness diminishing from the first end of the central section; a second terminal section integrally connected at a second and opposite end of the central section; the second terminal section having a thickness diminishing from the second end of the central section; a plurality of upstanding shoulders on opposite sides of the spring leaf and extending at least along a portion of the opposite sides in the longitudinal direction thereof.
    Type: Grant
    Filed: December 18, 1985
    Date of Patent: May 22, 1990
    Inventors: Alexandr N. Komarov, Vitaly T. Shevtsov, Viktor E. Zema, Grigory L. Lebedik, Evgeny M. Zema, Vladimir A. Nedorezov, Anatoly K. Oblovatsky, Boris Y. Drozdov, Andrei A. Zezjulinsky, Sergei V. Kovalenko, Alexandr N. Litvin, Vladislav P. Yatsenko, Alexandr N. Katunin