Patents by Inventor Yacheslav N. Saveliev

Yacheslav N. Saveliev 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).

  • Annular air-hammer apparatus for drilling holes
    Patent number: 4722403
    Abstract: The annular air-hammer apparatus for drilling holes comprises a shell hav fitted co-axially therein a chips-receiving sleeve, a hollow cylindrical case, and a ring-shaped hammer capable of reciprocating back and forth. The lower part of the shell accommodates a rock-cutting tool capable of moving axially with at least one blow-off passage formed by at least a single longitudinal groove made on the outer cylindrical surface of the rock-cutting tool. With the rock-cutting tool in its uppermost position, the blow-off passage communicates with an outlet space provided between the shell and the case.
    Type: Grant
    Filed: August 5, 1986
    Date of Patent: February 2, 1988
    Assignee: Institut Gornogo Dela Sibirskogo Otdelenia Akademii Nauk Sssr
    Inventors: Alexandr D. Kostylev, Boris B. Danilov, Boris N. Smolyanitsky, Vladimir P. Boginsky, Jury N. Syryamin, David I. Kogan, Oleg V. Smirnov, Yacheslav N. Saveliev