US Patent 7001120 Drilling tool
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Patent abstract
The invention relates to a drilling tool (36), in particular for working concrete, rock, masonry and suchlike materials, having a single- or multi-edge tool head with at least one cutting body (1) which comprises a central region (12) which is designed in a roof shape, has rake faces and flanks and is defined laterally by two outer regions (13, 14) set back in the effective direction of the drill. In this case, the ground surfaces of the central region (12) form a pyramidal point (15) while avoiding the formation of a chisel edge.
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Patent Inventor Names
Bernhard Moser0
Marco Lang0
Rainer Widmann0
Date of Patent
February 21, 2006
0Patent Application Number
102620600
Date Filed
September 30, 2002
0Patent Primary Examiner
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US Patent 7001120 Drilling tool
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