IMPACT-DRILLING PACKING FOR THE HAND MACHINE Russian patent published in 1995 - IPC

FIELD: building. SUBSTANCE: during the operation spindle 3 conveys rotation to shock worker 10 whose stops-rollers 21 interact with the projections of spring-loaded cam 19. The rotation and the collision momentum brought about by the interaction of cams 19 with the generatrices of roller 21 are conveyed to the drill clamped in chuck 11. In this case the impacts are not produced if flats 22 of the rollers face cams 19. EFFECT: enhanced performances. 4 dwg