The pneumatic impact tool is characterized by that the working tool /1/ has a flange that protect the tool from falling out and rests on the thrust ring /2/ mounted in the barrel seat as the hammer tool is being pressed down; moreover one of the noise suppressor chambers that is made up of the conic sleeve /34/ so pushed on the body-casing /4/ as that could rotate round axis, is connected with the second chamber that is made up of the space between the body-casing /4/ and the pneumatic motor's b...

A compressed air supply system for vibro-isolated tools comprises a telescopic-tubular connection between the tool grip and the tool compressed air engine. A cut-off valve is mounted at the inlet to a supply duct through the grip, the outlet of the duct being connected to a pipe of the supply system mounted in the grip by means of an elastic connection. The pipe of the supply system has holes through the wall thereof with increasing diameters which, during motion of the tool housing relative to ...

Vibro-isolation of connections of structural units of hand tools consisting of a vibro-isolator with a constant reaction force is characterized by that on the side of the body /3/ of the compressed-air engine there is an upper /9/ and lower /10/ elastic guide being the first stage of vibro-isolation in the directions /x/ and /y/ perpendicular to the axis of symmetry of the tool, whereas in the main direction /z/ parallel to the axis of symmetry of the tool vibro-isolation is ensured by an elasti...