PERCUSSIVE-ROTARY MECHANISM Russian patent published in 1997 - IPC

FIELD: mining industry and construction. SUBSTANCE: percussive-rotary mechanism has rod with disk cam installed on it and made with end conical surfaces engageable with end conical surfaces of rod and movable half-coupling, two spring-loaded pushers hinged by means of levers with striker and slider. Movable half-coupling transmits rotary motion by recess movable joint to spindle. Spring-loaded pushers with rollers are hinged by means of levers with additional pushers producing compensating percussive pulse with striker rebounding to the side opposite to handle of manual perforator. EFFECT: protection from vibration caused by rebound in impact. 1 dwg