Invention Grant
- Patent Title: Drill
- Patent Title (中): 钻头
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Application No.: US13498637Application Date: 2010-09-29
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Publication No.: US09073130B2Publication Date: 2015-07-07
- Inventor: Dieter Kress
- Applicant: Dieter Kress
- Applicant Address: DE Aalen
- Assignee: Mapal Fabrik für Präzisionswerkzeuge Dr. Kress KG
- Current Assignee: Mapal Fabrik für Präzisionswerkzeuge Dr. Kress KG
- Current Assignee Address: DE Aalen
- Agency: Harness, Dickey & Pierce, P.L.C.
- Agent Stephen T. Olson
- Priority: DE102009049087 20091002
- International Application: PCT/EP2010/005938 WO 20100929
- International Announcement: WO2011/038896 WO 20110407
- Main IPC: B23B51/02
- IPC: B23B51/02

Abstract:
A drill for producing a drilled hole in work pieces has at least one main cutting edge on an end face. At least one secondary cutting edge is provided in the region of a circumferential surface of the drill. At least one circularly ground land circumferentially adjoins the at least one secondary cutting edge. The circularly ground lands extend over a first longitudinal section in the front area of the secondary cutting edge. In a following second longitudinal section, a secondary flank circumferentially adjoins the secondary cutting edge.
Public/Granted literature
- US20120183367A1 DRILL Public/Granted day:2012-07-19
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