PERCUSSION ACTION TOOL Russian patent published in 2000 - IPC

FIELD: percussion tools for mounting-dismounting different mechanisms, possibly for punching holes in hard materials. SUBSTANCE: percussion action tool includes cylindrical housing embracing return spring, rod, stem and booster arranged between rod and stem. Rod has cone working surface, booster is in the form of washer and has working surface with through hole for rod and balls. Stem has one end with inclined working surface turned towards working surface of washer. Balls of booster are placed with possibility of radial sliding upon working surfaces of washer, rod and stem. Washer is in the form of sleeve with flat working surface and it is rigidly mounted in housing. There are grooves in working surfaces of sleeve and rod. Width of grooves consists 1.25-1.3 diameter of balls. Balls are embraced by ring made of elastically deformed material. Clamping means for tool is secured to another end of stem. EFFECT: enlarged manufacturing possibilities, simplified design, increased torque at usual percussion loads. 5 dwg