PNEUMATIC HAMMER Russian patent published in 2017 - IPC B25D9/14 E21C37/24 

FIELD: machine engineering.

SUBSTANCE: pneumatic hammer contains a handle with a sleeve forming an air cushioning chamber, a casing, a trunk with a working tool installed in the casing, with a hammer and an air supply pipe and an air distributor. The air supply pipe is made stepped with a large step, by means of which it is fixed in the barrel and with a small step installed in the sleeve with a possibility of movement and made with a closed end and radial holes on its side surface for periodic communication of the air distribution unit with the compressed air network.

EFFECT: simplifying the design, increasing the ease of use and efficiency of vibration damping.

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