Power tool and gear unit assembled therein

Details Power tool and gear unit assembled therein Power tool and gear unit assembled therein

2008-04-15

2008-04-15

Rada, Rinaldi I. (Department: 3721)

Tool driving or impacting

Means to drive tool about an axis

Gear drive

C173S210000, C173S211000, C074S411000

Reexamination Certificate

active

07357195

ABSTRACT:
A power tool including a gear unit provided with a load moderating mechanism capable of reducing noise and prolonging service life. A coupling is force fitted with a spindle at a predetermined pressure allowing the spindle and the coupling to rotate relative to each other when a load exceeding a predetermined load is applied therebetween. A gear has a surround section having a convex and surrounding the coupling. The coupling has an abutment projection abutable against the convex and a damper projection. An elastic member is interposed between the damper projection and the surround section. Rotation of the gear is transmitted to the spindle through the elastic member and the coupling.

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