FR955696A - - Google Patents
Info
- Publication number
- FR955696A FR955696A FR955696DA FR955696A FR 955696 A FR955696 A FR 955696A FR 955696D A FR955696D A FR 955696DA FR 955696 A FR955696 A FR 955696A
- 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
- E21B10/26—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers
- E21B10/265—Bi-center drill bits, i.e. an integral bit and eccentric reamer used to simultaneously drill and underream the hole
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)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR955696A true FR955696A (en) | 1950-01-18 |
Family
ID=1558391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR955696D Expired FR955696A (en) |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR955696A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2756024A (en) * | 1954-02-17 | 1956-07-24 | Chicago Pneumatic Tool Co | Rotary bit for wet drilling coal and the like |
| DE1031951B (en) * | 1953-11-13 | 1958-06-12 | Alfred Kunkel | Masonry drill |
| US3966350A (en) * | 1975-02-24 | 1976-06-29 | Erickson Tool Company | Spade drill |
| FR2440464A1 (en) * | 1978-10-30 | 1980-05-30 | Perot Georges | Drilling tool for relatively short distances through earth - has blade close to point of hard steel shaft |
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0
- FR FR955696D patent/FR955696A/fr not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1031951B (en) * | 1953-11-13 | 1958-06-12 | Alfred Kunkel | Masonry drill |
| US2756024A (en) * | 1954-02-17 | 1956-07-24 | Chicago Pneumatic Tool Co | Rotary bit for wet drilling coal and the like |
| US3966350A (en) * | 1975-02-24 | 1976-06-29 | Erickson Tool Company | Spade drill |
| FR2440464A1 (en) * | 1978-10-30 | 1980-05-30 | Perot Georges | Drilling tool for relatively short distances through earth - has blade close to point of hard steel shaft |