IMPACT ADAPTER FOR TRANSFER OF IMPACTS AND ROTATION FROM AN IMPACT ROCK DRILLING MACHINE TO A DRILL STRING

摘要

Impact adapter for transfer of impacts and rotation from an impact rock drilling machine to a drill string comprising a first end (5) for connection to a drill string and a second end provided with ridges (7) and interposed grooves (8) for transfer of rotation. The grooves (8) at the end (9) directed away from the first end (5) of the impact adapter (2) are widened in the direction away from the first end (5).