Patents by Inventor Sergei V. Daibov

Sergei V. Daibov 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).

  • Percussion-rotary drilling tool
    Patent number: 5004056
    Abstract: The proposed tool comprises a body (1) designed to interact with a percussion-rotary device and a casing (2) shaped as a sleeve. The casing (2) accommodates rock-crushing elements (5, 6) arranged in a manner allowing axial displacement thereof and in the form of concentric rows relative to a working end of the casing (2), the rock-crushing elements having shanks (7, 8) which interact with the body (1). Each rock-crushing element (6) in a peripheral row comprises a spring biased pin mechanism (16) for fixing the rock-crushing element (6) in the casing (2). The casing includes a threaded joint (9) for its axial displacement relative to the body (1). The length of axial displacement of the casing (2) relative to the body (1) is at least equal to the length (H) of the wearable portion of the rock-crushing elements (5, 6).
    Type: Grant
    Filed: January 23, 1990
    Date of Patent: April 2, 1991
    Inventors: Yakov A. Goikhman, Georgy M. Krjukov, Melis I. Onotsky, Georgy M. Sorokin, Alexei V. Filatov, Viktor V. Tsarapkin, Vadim P. Yakimov, Gennady A. Smirnov, Ivan I. Nikiforov, Alexandr I. Burdukovsky, Sergei V. Daibov, Alexandr S. Kurdjukov