Abstract: A distinguishing feature of the present invention comprising a shell with side ports and an axial taper through cavity whose generatrix is inclined to the shell center line at an angle of less than the self-wedging angle, spring-biased gripping jaws accommodated in that cavity, levers installed in the shell ports and interacting by their inner ends with the gripping jaws consists in that the gripping tool is equipped with an abutment sleeve having an inside annular recess and installed on the shell external surface and a rubber shock absorber disposed between the recess upper surface and the outer ends of the levers.
Type:
Grant
Filed:
February 24, 1983
Date of Patent:
December 11, 1984
Assignee:
Institut Gornogo Dela
Inventors:
Boris N. Smolyanitsky, Vladimir P. Boginsky, Vladimir P. Gileta, Jury N. Syryamin, Alexei D. Terskov