AIR IMPACT MECHANISM Russian patent published in 2011 - IPC E21B1/30 E21B1/38 E21C37/00 

FIELD: machine building.

SUBSTANCE: air impact mechanism consists of cylinder case with outlet channels and installed in it bushing and of stepped striker with rod and main parts, with through orifice and bushing in rod part with channel-slot dividing cavity of case to chamber of idle run on side of shank end and circular working chamber. Further, the mechanism consists of a circular flange with channels supplying air from a network camera, of the rod rigidly secured relative to the circular flange and continuously inserted in a through orifice of the striker and interacting with the channel-slot of the bushing and of a working tool with the shank end. The impact mechanism has a circular distributing chamber on one side communicated with the network camera by means of air supplying channels of the circular flange and on another side continuously communicated with the circular chamber of working stroke by means of a circular throttle channel formed with a bushing of the impact mechanism and a rod part of the striker. Also, the rod is alternately communicated depending on position between the stepped striker of the circular distributing chamber and the idle stroke chamber.

EFFECT: raised power of impact and reliability of rod.

1 dwg