Drill tool

Details Drill tool Drill tool

2006-02-15

2009-08-04

Rada, Rinaldi I. (Department: 3721)

Tool driving or impacting

Drive by means reacting to rotating eccentric mass

C173S050000, C173S051000, C173S104000

Reexamination Certificate

active

07568529

ABSTRACT:
A drill tool is provided with: a drive source accommodated in a tool body2;a bit drive shaft3which is rotation-driven by the drive source and provided projectingly from a front end of the drill body2;and a diamond bit4attached to a front end of the bit drive shaft3.Further, the drill tool is provided with a vibrating apparatus which generates vibrating force which acts in the axial direction of the bit drive shaft3,a magnitude of which pulsates, and vibrating moment which acts in the rotational direction of the bit drive shaft3,a magnitude of which pulsates.

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