Rotary hammer

Details Rotary hammer Rotary hammer

2006-05-30

2006-05-30

Smith, Scott A. (Department: 3721)

Tool driving or impacting

Impacting devices

With means for rotating tool

C173S178000, C173S201000

Reexamination Certificate

active

07051820

ABSTRACT:
An electrically powered rotary hammer comprising a rotary drive mechanism including a spindle drive gear rotatably mounted around the spindle for rotationally driving the spindle, or a part of the spindle, via an overload clutch. The overload clutch is arranged such that below a predetermined torque threshold a spring element or elements maintain(s) the spindle drive gear and a clutch ring in a relative rotational position in which the spindle drive gear locks locking member or members in a first position and such that above the torque threshold the spring element or elements deform(s) and the relative rotational position of the spindle drive gear and a clutch ring changes so that the locking member or members move(s) out of the first position.

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