Patents by Inventor Igor Anatolyevich Levankovskii

Igor Anatolyevich Levankovskii 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).

  • Tool for crushing hard material
    Patent number: 5702160
    Abstract: The concept of invention: a tool for crushing hard material comprises a housing and a hard-alloy insert mounted on the latter. The insert is made up of a head portion, an intermediate portion and a base with a thrust face. The intermediate portion of the insert is formed by a body of revolution with an outer lateral surface of concave shape. The head portion of the insert is formed by a body of revolution with an outer lateral surface of convex shape. The lateral side of the head portion of the insert is smoothly located adjacent to the lateral side of the intermediate portion of the insert. The length of the intermediate portion of the insert about its longitudinal axis does not exceed the length of the head portion of the insert about the same axis.
    Type: Grant
    Filed: August 16, 1996
    Date of Patent: December 30, 1997
    Inventors: Igor Anatolyevich Levankovskii, Yurii Alexandrovich Grinevitskii, Victor Danilovich Shults, Yurii Victorovich Alexandrov