Tool shank and chuck combination for hammer drill

Details Tool shank and chuck combination for hammer drill Tool shank and chuck combination for hammer drill

B - Operations, Transporting

25

D

255/54

B25D 17/08 (2006.01)

Patent

CA 1101836

ABSTRACT OF THE DISCLOSURE A hammer drill has a chuck forming a tool receptacle defining a chuck axis and provided with a tool- holding element radially displaceable into a position pro- truding into the tool receptacle. The tool has a shank defin- ing a tool axis receivable axially in the receptacle. This shank is formed with a radially outwardly opening recess closed at both axial ends and shaped to receive the tool-holding e- lement, and with an axially extending groove separate from the recess and opening axially at the end of the shank. This groove has at least one flank extending substantially radially of the tool axis. A rotary-entrainment formation in the receptacle is formed with at least one side flatly engageable with the flank for maximum force transmission and minimum wear. -1-

355216

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