| US 7,455,484 B2 | ||
| Cutting or breaking tool as well as cutting insert for the latter | ||
| Heinrich Bauschulte, Eiterfeld-Leimbach (Germany); Marco Schumann, Eiterfeld-Soisdorf (Germany); Wolfgang Wald, Rasdorf (Germany); Martina Stuckardt, Haunetal (Germany); Ernst Heiderich, Hohenroda (Germany); and Reinhold Walter, Rossdorf (Germany) | ||
| Assigned to Barat Carbide Holding GmbH, Burghaun (Germany) | ||
| Filed on Oct. 30, 2001, as Appl. No. 10/4,154. | ||
| Application 10/004154 is a division of application No. 09/453132, filed on Dec. 02, 1999, granted, now 6,354,771. | ||
| Claims priority of application No. 198 57 451 (DE), filed on Dec. 12, 1998. | ||
| Prior Publication US 2002/0164215 A1, Nov. 07, 2002 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. B23B 27/22 (2006.01); B23B 27/16 (2006.01) | ||
| U.S. Cl. 407—114 [407/61; 299/111; 175/427] | 21 Claims |
| 1. A cutting insert having a longitudinal axis comprising:
a substantially conical tip;
a transition region connected to the substantially conical tip having a periphery, an even number plurality of spatial areas
and a plurality of cutting edges between the spatial areas;
a foot connected to the transition region; and
the plurality of spatial areas being curved concavely in a direction from the foot to the conical tip;
wherein the plurality of spatial areas are distributed over the periphery of the transition region and adjoin one another
to form the plurality of cutting edges.
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