Patents by Inventor Gennady A. Tkachenko

Gennady A. Tkachenko 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).

  • Percussive action machine for making holes in the ground
    Patent number: 4637476
    Abstract: A percussive action machine includes a housing in which a hammer is movably secured to define a forward stroke chamber and a return stroke chamber. The hammer is provided with an air-distributor fashioned as a sleeve having holes. The hammer is further provided with a device for alternately communicating the return stroke chamber with the forward stroke chamber and with the outside, the device having the form of at least one bore arranged inside the hammer in line with its axis. Communicating with this bore is a tubular control valve extending through the forward stroke chamber and having in its wall at least one hole wherethrough the return stroke chamber alternately communicates with the forward stroke chamber and with the outside.
    Type: Grant
    Filed: April 4, 1985
    Date of Patent: January 20, 1987
    Assignee: Institut Gornogo Dela Sibirskogo Otdelenia Akademii Nauk SSSR
    Inventors: Konstantin S. Gurkov, Alexandr D. Kostylev, Gennady A. Tkachenko, Ivan P. Leonov, Vladimir V. Klimashko