Drill bit and cutting head for drill bit

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9284787
APP PUB NO 20130319774A1
SERIAL NO

13901917

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Abstract

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A cutting head for a drill bit comprises four substantially identically shaped cutting arms extending radially from a common central axial point, each cutting arm comprising a cutting edge extending, outwardly and axially backwards from the common central axial point. The cutting edges are equianguiarly spaced apart from each other about the central axis of the cutting head. Each cutting, arm further comprises a side chamfer extending between its radially outer face and its rotationally trailing side face.

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Patent Owner(s)

Patent OwnerAddress
BLACK & DECKER INC1000 STANLEY DR NEW BRITAIN CT 06053

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bluemel, Christian Waldkirchen, DE 2 16
Brocket, Steve Durham, GB 1 10
Gastinger, Christoph Hutthum, DE 3 10
Hammer, Andreas Tittling, DE 9 18

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