PNEUMATIC DRILL Russian patent published in 1995 - IPC

FIELD: pneumatic tools. SUBSTANCE: pneumatic drill has the body 1, whose cavity 9 includes the chamber 10 for stabilizing pressure, connected through the valve 25 with a source of compressed air and through the calibrated spray nozzle 11 and the duct 12 with the working chamber 13 of a pulsator. The striker 14 of the pulsator is in the form of a distributing spool, arranged in the sleeve 5 with possibility of reciprocation motion in autooscillation mode, engagement with the bit 2 and periodic alternative connection of the working cavities 13 and 16 through the duct 36 with atmosphere. EFFECT: enhanced efficiency, simplified structure of the pneumatic drill. 3 cl, 1 dwg