Power-driven hand tool

Tool driving or impacting – Impacting devices – With means to cause or control advance of hammer head

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Details

173123, B25D 1110

Patent

active

044560761

ABSTRACT:
A hammer drill has a housing provided with a tool chuck in which a tool is to be mounted. A drive is provided which is capable of rotating and/or axially impacting the tool chuck. This drive includes a piston reciprocable in axial direction of the tool chuck, a drum rotating on a shaft extending parallel to the direction of reciprocation of the piston and provided with a circumferentially extending cam track, and a transmitting arrangement which travels in part in engagement with the cam track and which has another part connected with the piston to reciprocate the same.

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