DE69005547D1 - Bohrer. - Google Patents
Bohrer.Info
- Publication number
- DE69005547D1 DE69005547D1 DE90307675T DE69005547T DE69005547D1 DE 69005547 D1 DE69005547 D1 DE 69005547D1 DE 90307675 T DE90307675 T DE 90307675T DE 69005547 T DE69005547 T DE 69005547T DE 69005547 D1 DE69005547 D1 DE 69005547D1
- Authority
- DE
- Germany
- Prior art keywords
- drill
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
- E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/58—Chisel-type inserts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/0018—Drills for enlarging a hole
- B23B51/0045—Drills for enlarging a hole by expanding or tilting the toolhead
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/56—Button-type inserts
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB898916171A GB8916171D0 (en) | 1989-07-14 | 1989-07-14 | Improvements in drills |
GB898923279A GB8923279D0 (en) | 1989-10-16 | 1989-10-16 | Improvements in drills |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69005547D1 true DE69005547D1 (de) | 1994-02-10 |
DE69005547T2 DE69005547T2 (de) | 1994-06-23 |
Family
ID=26295611
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69005547T Expired - Fee Related DE69005547T2 (de) | 1989-07-14 | 1990-07-13 | Bohrer. |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0408379B1 (de) |
DE (1) | DE69005547T2 (de) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AUPN674795A0 (en) * | 1995-11-23 | 1995-12-14 | Ramset Fasteners (Aust.) Pty. Limited | Undercutting drills |
GB0125882D0 (en) * | 2001-10-27 | 2001-12-19 | Technical Services Team Ltd | Precision underreaming drill |
US9032849B2 (en) * | 2008-08-29 | 2015-05-19 | Valenite Llc | Flip cartridges and material removal tool with same |
CN104234632B (zh) * | 2014-08-21 | 2016-04-20 | 张陈泓 | 一种扩底钻头 |
CN107060653B (zh) * | 2017-04-27 | 2023-11-21 | 西南石油大学 | 一种混合破岩机构和一种长寿命混合钻头 |
CN108044804A (zh) * | 2017-11-17 | 2018-05-18 | 绿城装饰工程集团有限公司 | 一种倒锥形扩孔合金钻头 |
CN108789867B (zh) * | 2018-06-08 | 2023-09-01 | 深圳市艺中乐珠宝有限公司 | 一种便于更换钻头的珠宝用打孔机 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7820164U1 (de) * | 1978-07-05 | 1978-10-12 | Boehm, Edgar, 2800 Bremen | Bohrwerkzeug zur herstellung einer konisch hinterschnittenen bohrung |
DE3024656C2 (de) * | 1980-06-30 | 1982-08-12 | Heinrich 6102 Pfungstadt Liebig | Hinterschnitt-Bohrwerkzeug |
DE3300470A1 (de) * | 1983-01-08 | 1984-07-12 | Friedrich Duss Maschinenfabrik GmbH & Co, 7265 Neubulach | Bohrwerkzeug zur erzeugung von hinterschnittten in vorbohrungen |
US4635737A (en) * | 1984-03-08 | 1987-01-13 | Kabushiki Kaishi Miyanaga | Undercutting drill |
GB2184962B (en) * | 1986-01-07 | 1989-10-18 | David Patrick Payne | Improvements in drills |
-
1990
- 1990-07-13 DE DE69005547T patent/DE69005547T2/de not_active Expired - Fee Related
- 1990-07-13 EP EP90307675A patent/EP0408379B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0408379A1 (de) | 1991-01-16 |
EP0408379B1 (de) | 1993-12-29 |
DE69005547T2 (de) | 1994-06-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |