INERTIAL-IMPACT TOOL (VERSIONS) Russian patent published in 2008 - IPC B25D17/24 

FIELD: mechanics.

SUBSTANCE: inertial-impact tool comprises casing, impact tool, impact tool pneumatic-spring drive, shock absorber and control element. Aforesaid shock absorber comprises a weight moving to reaction force transmission position and gets into contact with impact tool. Flexible element is designed to absorb reaction force in the aforesaid weight motion. Impact of flexible element on the said weight is prevented by the said control element. The weight can be in ether a direct contact with the impact tool or via an intermediate element. Pneumatic spring drive element is arranged to move from working into idle positions.

EFFECT: reduced vibration of inertial-impact mechanism.

10 cl, 17 dwg