Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Kigen Agehara0
Motoshige Akatsu0
Naohide Murakami0
Date of Patent
April 17, 2007
0Patent Application Number
104977220
Date Filed
January 14, 2003
0Patent Citations Received
Patent Primary Examiner
Patent 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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