Tool driving or impacting – Drive by means reacting to rotating eccentric mass
Reexamination Certificate
2007-04-17
2007-04-17
Nash, Brian (Department: 3721)
Tool driving or impacting
Drive by means reacting to rotating eccentric mass
C173S048000, C173S091000, C173S142000, C173S144000
Reexamination Certificate
active
10497722
ABSTRACT:
A concrete drill for drilling concrete or the like by a diamond bit (5) attached to a front end of a bit drive shaft (4) projected forward from a main body (1) by driving to rotate the bit drive shaft (4) by a drive source (2) contained in the main body (1) in which the main body (1) is provided with a vibrating apparatus (8) for exerting a vibrating force a magnitude which is pulsated to change along the bit drive shaft (4) to the main body (1).
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Agehara Kigen
Akatsu Motoshige
Murakami Naohide
Max Co. Ltd.
Morgan & Lewis & Bockius, LLP
Nash Brian
LandOfFree
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