BE493510A - - Google Patents
Info
- Publication number
- BE493510A BE493510A BE493510DA BE493510A BE 493510 A BE493510 A BE 493510A BE 493510D A BE493510D A BE 493510DA BE 493510 A BE493510 A BE 493510A
- Authority
- BE
- Belgium
- Prior art keywords
- foil
- threads
- shank
- drilling
- wall
- Prior art date
Links
- 239000011888 foil Substances 0.000 claims description 35
- 238000005553 drilling Methods 0.000 claims description 15
- 239000011435 rock Substances 0.000 claims description 8
- 239000002699 waste material Substances 0.000 claims description 8
- 239000003245 coal Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 239000011295 pitch Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 229910003460 diamond Inorganic materials 0.000 description 2
- 239000010432 diamond Substances 0.000 description 2
- 235000004035 Cryptotaenia japonica Nutrition 0.000 description 1
- 102000007641 Trefoil Factors Human genes 0.000 description 1
- 235000015724 Trifolium pratense Nutrition 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000017260 vegetative to reproductive phase transition of meristem Effects 0.000 description 1
- 230000002747 voluntary effect Effects 0.000 description 1
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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/22—Rods or pipes with helical structure
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)
- Earth Drilling (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE493510A true BE493510A (ja) |
Family
ID=137494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE493510D BE493510A (ja) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE493510A (ja) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4953642A (en) * | 1989-03-20 | 1990-09-04 | Skaggs Roger D | Rock drill bit |
| US5503237A (en) * | 1993-11-11 | 1996-04-02 | Hilti Aktiengesellschaft | Helical drill |
-
0
- BE BE493510D patent/BE493510A/fr unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4953642A (en) * | 1989-03-20 | 1990-09-04 | Skaggs Roger D | Rock drill bit |
| US5503237A (en) * | 1993-11-11 | 1996-04-02 | Hilti Aktiengesellschaft | Helical drill |
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