FR2271001B1 - - Google Patents
Info
- Publication number
- FR2271001B1 FR2271001B1 FR7514788A FR7514788A FR2271001B1 FR 2271001 B1 FR2271001 B1 FR 2271001B1 FR 7514788 A FR7514788 A FR 7514788A FR 7514788 A FR7514788 A FR 7514788A FR 2271001 B1 FR2271001 B1 FR 2271001B1
- Authority
- FR
- France
- 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
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
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/56—Button-type inserts
-
- 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
- E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
- E21B10/445—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts percussion type, e.g. for masonry
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Drilling Tools (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19742423511 DE2423511A1 (de) | 1974-05-15 | 1974-05-15 | Bohrer mit foerderwendel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2271001A1 FR2271001A1 (en) | 1975-12-12 |
| FR2271001B1 true FR2271001B1 (US20050065096A1-20050324-C00034.png) | 1979-03-30 |
Family
ID=5915594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7514788A Granted FR2271001A1 (en) | 1974-05-15 | 1975-05-13 | Powered concrete drill with shaft groove - cutting face studs of hardmetal angled at rim, cone tipped |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE2423511A1 (US20050065096A1-20050324-C00034.png) |
| FR (1) | FR2271001A1 (US20050065096A1-20050324-C00034.png) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3540355C2 (de) * | 1985-11-14 | 1996-01-11 | Duss Maschf | Bohrer zum drehschlagenden Bohren |
| DE3919264C2 (de) * | 1989-06-13 | 1997-01-23 | Duss Maschf | Drehschlagbohrer für ein von Hand führbares Bohrgerät |
| DE102012212042A1 (de) * | 2012-07-10 | 2014-01-30 | Robert Bosch Gmbh | Bohrkrone |
-
1974
- 1974-05-15 DE DE19742423511 patent/DE2423511A1/de not_active Withdrawn
-
1975
- 1975-05-13 FR FR7514788A patent/FR2271001A1/fr active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| DE2423511A1 (de) | 1975-11-27 |
| FR2271001A1 (en) | 1975-12-12 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |