Invention Grant
- Patent Title: Drill for chiseling stone
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Application No.: US16626257Application Date: 2018-06-20
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Publication No.: US11691204B2Publication Date: 2023-07-04
- Inventor: Klaus-Peter Bohn , Roland Foser , Markus Hartmann , Bastian Pluemacher
- Applicant: Hilti Aktiengesellschaft
- Applicant Address: LI Schaan
- Assignee: Hilti Aktlengesellschaft
- Current Assignee: Hilti Aktlengesellschaft
- Current Assignee Address: LI Schaan
- Agency: Crowell & Moring LLP
- Priority: EP 178104 2017.06.27
- International Application: PCT/EP2018/066371 2018.06.20
- International Announcement: WO2019/002040A 2019.01.03
- Date entered country: 2019-12-23
- Main IPC: B25D17/20
- IPC: B25D17/20 ; B23B51/02 ; E21B10/36 ; B28D1/14 ; B28D1/26 ; B25D17/02

Abstract:
A drill bit for chiseling stone includes an impact face at an insertion end of the drill bit, a hollow shank, where a delivery passage is defined within the hollow shank, and a drill head, where the drill head has, at a front end of the drill head, a cutting edge, an intake opening, and an intake passage. The intake passage connects the intake opening to the delivery passage. A cross section of the intake passage increases from the intake opening to the delivery passage.
Public/Granted literature
- US20200156163A1 Drill for Chiseling Stone Public/Granted day:2020-05-21
Information query