Synchronized hammer coupling

Details Synchronized hammer coupling Synchronized hammer coupling

B - Operations, Transporting

25

D

121/38, 121/7

B25D 11/10 (2006.01) B25D 16/00 (2006.01)

Patent

CA 1313979

ABSTRACT OF THE DISCLOSURE A rotary hammer has a pneumatic hammer mechanism which can be driven by means of a driver-part mounted rotatab- ly on an intermediate shaft, with which driver-part a first coupling element of a coupling is non-rotatably connected, while the second coupling element of the coupling is non-rotatably mounted on the intermediate shaft and through axial displacement can be brought into positive coupling engagement with the first coupling element. A synchronizing arrangement is provided, which on approach of the coupling elements to one another, accelerates the first coupling element at least ap- proximately to the rotational speed of the second coupling element and only then permits the positive engagement of the coupling elements.

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