Rotary tool and method for manufacturing

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9604285
APP PUB NO 20160263663A1
SERIAL NO

14644635

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Abstract

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A rotary tool, in particular drilling tool, extends along a longitudinal axis and has an end surface; a brad point; and at least one major cutting edge extending outward up to an edge corner. A first free surface segment adjoins the major cutting edge, and a second free surface segment in turn adjoins said first free surface segment. To keep the stress, in particular the wear, low in the region of the end surface, the first free surface segment has a lower average abrasiveness than the second free surface segment.

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Patent Owner(s)

Patent OwnerAddress
KENNAMETAL INC1600 TECHNOLOGY WAY LATROBE PA 15650-0231

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kauper, Herbert Rudolf Erlangen, DE 36 155
Schwaegerl, Juergen Vohenstrauss, DE 23 173

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