PNEUMATIC HAMMER Russian patent published in 2022 - IPC B25D9/04 B25D9/26 B25D17/02 E21C37/24 

FIELD: pneumatics.

SUBSTANCE: invention relates to a pneumatic hammer. Hammer comprises a striker, a cylindrical body, a working tool, a handle with an intake apparatus, a divider with an intake throttle valve, an outlet channel, and an axial hole wherein a tube is installed and secured with a longitudinal outlet channel and a radial outlet channel exiting in the side surface thereof, an annular outlet chamber with an outlet, a prechamber formed by said handle body and divider, in communication with a compressed air network via an air supply channel. The striker is made with a through axial channel for the passage of the tube and divides the cavity of the cylindrical body into a working stroke chamber on the side of the divider and an idle stroke chamber on the side of the working tool. The cylindrical body is equipped with a bypass groove channel with permanently open exits into the idle stroke chamber and the working stroke chamber. The bypass screw-shaped groove channel is made on the side surface of the internal cavity of the cylindrical body in the form of a drainage screw-shaped groove channel with a cross section in the shape of a rectangle or square.

EFFECT: strength properties of the striker are increased.

1 cl, dwg