| 摘要 |
PROBLEM TO BE SOLVED: To provide a hammer capable of rotating a tool or a bit mounted into the hammer to a required azimuth. SOLUTION: The hammer comprises a housing part 1 and a spindle 2 extending out of a hole in a housing. The spindle 2 can rotate in any azimuth to change an azimuth of the tool or the bit mounted to it. An operator can easily change the azimuth of the bit of the hammer by rotating a grip ring 12 until the tool or the bit directs to a correct azimuth. |
