NL6918822A - - Google Patents
Info
- Publication number
- NL6918822A NL6918822A NL6918822A NL6918822A NL6918822A NL 6918822 A NL6918822 A NL 6918822A NL 6918822 A NL6918822 A NL 6918822A NL 6918822 A NL6918822 A NL 6918822A NL 6918822 A NL6918822 A NL 6918822A
- Authority
- NL
- Netherlands
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
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/58—Chisel-type inserts
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 |
|---|---|---|---|
| DE6812098U DE6812098U (de) | 1968-12-19 | 1968-12-19 | Gesteinsbohrer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL6918822A true NL6918822A (xx) | 1970-06-23 |
Family
ID=6596664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL6918822A NL6918822A (xx) | 1968-12-19 | 1969-12-16 |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US3687207A (xx) |
| AT (1) | AT293980B (xx) |
| BE (1) | BE743314A (xx) |
| CH (1) | CH502173A (xx) |
| DE (1) | DE6812098U (xx) |
| FR (1) | FR2026540A1 (xx) |
| LU (1) | LU60031A1 (xx) |
| NL (1) | NL6918822A (xx) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6039127A (en) * | 1998-03-13 | 2000-03-21 | Loudon Enterprises, Inc. | Rock drill |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2598459A (en) * | 1947-02-07 | 1952-05-27 | Super Tool Company | Masonry drill |
| US2565333A (en) * | 1947-10-25 | 1951-08-21 | Carboloy Company Inc | Masonry drill |
| US2641446A (en) * | 1948-02-28 | 1953-06-09 | Sandvikens Jernverks Aktiehola | Bore crown for percussion drilling |
| US2522045A (en) * | 1948-05-21 | 1950-09-12 | Silas A Knowles | Bit for rock drilling |
| US2614811A (en) * | 1949-01-10 | 1952-10-21 | H E Fletcher Company | Drill |
| US2673714A (en) * | 1950-08-05 | 1954-03-30 | John M Hargrave | Rock or masonry drill |
| US3117637A (en) * | 1960-11-01 | 1964-01-14 | Mortensen Louis Aackersberg | Drill bit |
-
1968
- 1968-12-19 DE DE6812098U patent/DE6812098U/de not_active Expired
-
1969
- 1969-12-11 CH CH1856569A patent/CH502173A/de unknown
- 1969-12-12 AT AT1157169A patent/AT293980B/de not_active IP Right Cessation
- 1969-12-15 US US885146A patent/US3687207A/en not_active Expired - Lifetime
- 1969-12-16 NL NL6918822A patent/NL6918822A/xx unknown
- 1969-12-17 FR FR6943685A patent/FR2026540A1/fr not_active Withdrawn
- 1969-12-17 LU LU60031D patent/LU60031A1/xx unknown
- 1969-12-17 BE BE743314D patent/BE743314A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| US3687207A (en) | 1972-08-29 |
| LU60031A1 (xx) | 1970-02-17 |
| DE6812098U (de) | 1969-04-03 |
| BE743314A (xx) | 1970-05-28 |
| CH502173A (de) | 1971-01-31 |
| FR2026540A1 (xx) | 1970-09-18 |
| AT293980B (de) | 1971-11-10 |