FR2521633B1 - - Google Patents
Info
- Publication number
- FR2521633B1 FR2521633B1 FR8203081A FR8203081A FR2521633B1 FR 2521633 B1 FR2521633 B1 FR 2521633B1 FR 8203081 A FR8203081 A FR 8203081A FR 8203081 A FR8203081 A FR 8203081A FR 2521633 B1 FR2521633 B1 FR 2521633B1
- 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
- E21B10/36—Percussion drill bits
-
- 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
- E21B10/02—Core bits
- E21B10/04—Core bits with core destroying means
-
- 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
- E21B10/54—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits
-
- 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
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)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8203081A FR2521633A1 (fr) | 1982-02-18 | 1982-02-18 | Trepan pour la perforation de materiaux tels que roche ou beton |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8203081A FR2521633A1 (fr) | 1982-02-18 | 1982-02-18 | Trepan pour la perforation de materiaux tels que roche ou beton |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2521633A1 FR2521633A1 (fr) | 1983-08-19 |
FR2521633B1 true FR2521633B1 (sv) | 1984-06-29 |
Family
ID=9271318
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8203081A Granted FR2521633A1 (fr) | 1982-02-18 | 1982-02-18 | Trepan pour la perforation de materiaux tels que roche ou beton |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2521633A1 (sv) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4301191A1 (de) * | 1993-01-19 | 1994-07-21 | Hawera Probst Kg Hartmetall | Gesteinsbohrwerkzeug |
CN1160431A (zh) * | 1994-10-14 | 1997-09-24 | 钴碳化钨硬质合金公司 | 凹形切割头 |
FR2738762B1 (fr) * | 1995-09-18 | 1997-10-17 | Diager | Partie coupante d'un foret |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE967491C (de) * | 1951-05-01 | 1957-11-14 | Seco Ltd | Zweistufiger Gesteinsschlagbohrer |
FR1154010A (fr) * | 1955-06-17 | 1958-04-01 | Hellefors Bruks Aktiebolag | Perfectionnements aux foreuses au rocher |
FR1176596A (fr) * | 1956-06-27 | 1959-04-13 | Sandvikens Jernverks Ab | Tête de fleuret de perforation par percussion |
BE653828A (sv) * | 1963-10-01 | |||
FR1374214A (fr) * | 1963-11-15 | 1964-10-02 | Diamant Boart Sa | Procédé et machine de sondage ou de forage d'un sol |
US3415332A (en) * | 1967-03-08 | 1968-12-10 | Gen Electric | Drill bit |
AT321207B (de) * | 1972-11-15 | 1975-03-25 | Boehler & Co Ag Geb | Bohrverfahren und Vorrichtung zu seiner Durchführung |
-
1982
- 1982-02-18 FR FR8203081A patent/FR2521633A1/fr active Granted
Also Published As
Publication number | Publication date |
---|---|
FR2521633A1 (fr) | 1983-08-19 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |