Invention Grant
- Patent Title: Drill bit with an exchangeable cutting portion
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Application No.: US14654459Application Date: 2013-12-20
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Publication No.: US10201858B2Publication Date: 2019-02-12
- Inventor: Matthaeus Hoop
- Applicant: Hilti Aktiengesellschaft
- Applicant Address: LI Schaan
- Assignee: Hilti Aktiengesellschaft
- Current Assignee: Hilti Aktiengesellschaft
- Current Assignee Address: LI Schaan
- Agency: Crowell & Moring LLP
- Priority: WOPCT/EP2012/076774 20121221; EP13166990 20130508
- International Application: PCT/EP2013/077690 WO 20131220
- International Announcement: WO2014/096360 WO 20140626
- Main IPC: B23B51/04
- IPC: B23B51/04 ; B23B31/113 ; E21B17/046 ; B28D1/04 ; E21B10/62

Abstract:
A drill bit, which is rotatable in a direction of rotation about an axis of rotation, is disclosed. The drill bit has a cutting portion with an annular portion where the annular portion has a first end on which is a cutting element and has at a second end a first insertion element. The drill bit has a drill shaft portion with a cylindrical drill shaft which has at an end, towards the cutting portion, a second insertion element. In a direction of insertion parallel to the axis of rotation, the insertion elements form a plug-in connection and can be additionally connected by way of at least one pin element which is movable in at least one slit-shaped clearance.
Public/Granted literature
- US20150328694A1 Drill Bit with an Exchangeable Cutting Portion Public/Granted day:2015-11-19
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