AIR-OPERATED SHOCK MACHINE Russian patent published in 1995 - IPC

FIELD: construction. SUBSTANCE: machine has two-step housing 1 with air supplying passageways 11,12,13 and striker 3 and slide valve 6 mounted inside space 2 of housing 1. Slide valve 6 is constructed as ring 5 whose wall are provided with passageways 6 the axes of which are parallel to the bases of rings 5. Cylindric opening 10 for one of air supplying passageways 11 is made at the center of the face of the step of grater diameter. Opening 10 and opening 7 of ring 5 are axially alined. Striker 3 is set in the smaller step of housing 1, and slide valve 6 is set in the grater one to define radial calibrated space 8 with respect to the side wall and space 9 with respect to the faces of housing 1. Passageways 6 are shifted with respect to the horizontal axis of ring 5 in opposite directions. EFFECT: enhanced reliability. 2 cl, 3 dwg