| US 7,572,086 B2 | ||
| Throwaway tip and throwaway-type cutting tool | ||
| Hidehiko Nagaya, Yuuki-gun (Japan); and Hiroshi Shimomura, Yuuki-gun (Japan) | ||
| Assigned to Mitsubishi Materials Corporation, Tokyo (Japan) | ||
| Filed on Nov. 19, 2004, as Appl. No. 10/991,506. | ||
| Application 10/991506 is a division of application No. 09/639946, filed on Aug. 17, 2000, granted, now 6,939,090. | ||
| Claims priority of application No. 11-230916 (JP), filed on Aug. 17, 1999; application No. 2000-160902 (JP), filed on May 30, 2000; and application No. 2000-180438 (JP), filed on Jun. 15, 2000. | ||
| Prior Publication US 2005/0147475 A1, Jul. 07, 2005 | ||
| Int. Cl. B23B 1/00 (2006.01); B23B 3/00 (2006.01) | ||
| U.S. Cl. 407—113 [407/67] | 18 Claims |
| 1. A tip, comprising:
a first straight cutting edge;
a second straight cutting edge connected to the first straight cutting edge at a first corner;
a third straight cutting edge connected to the second straight cutting edge at a second corner; and
a fourth straight cutting edge connected to the third straight cutting edge at a third corner and connected to the first straight
cutting edge at a fourth corner, wherein
said first corner forms an angle of less than 90°,
said second corner forms an angle of less than 90°,
said third corner forms an angle of less than 90°,
the tip is formed of a substantially quadrilateral-shaped plate, and
said fourth corner forms an angle of greater than 90°, whereby said tip is configured to be utilized in various cutting orientations.
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