JPS4961905A - - Google Patents
Info
- Publication number
- JPS4961905A JPS4961905A JP48050400A JP5040073A JPS4961905A JP S4961905 A JPS4961905 A JP S4961905A JP 48050400 A JP48050400 A JP 48050400A JP 5040073 A JP5040073 A JP 5040073A JP S4961905 A JPS4961905 A JP S4961905A
- Authority
- JP
- Japan
- 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.)
- Pending
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
- E21B10/08—Roller bits
- E21B10/10—Roller bits with roller axle supported at both ends
-
- 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
- E21B10/50—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of roller type
- E21B10/52—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of roller type with chisel- or button-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)
- Earth Drilling (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US25160772A | 1972-05-08 | 1972-05-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS4961905A true JPS4961905A (ja) | 1974-06-15 |
Family
ID=22952672
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP48050400A Pending JPS4961905A (ja) | 1972-05-08 | 1973-05-08 |
Country Status (9)
Country | Link |
---|---|
JP (1) | JPS4961905A (ja) |
AU (1) | AU475924B2 (ja) |
CA (1) | CA975389A (ja) |
DE (1) | DE2323603A1 (ja) |
FR (1) | FR2183904A1 (ja) |
GB (1) | GB1410534A (ja) |
NO (1) | NO139495C (ja) |
SE (1) | SE404055B (ja) |
ZA (1) | ZA732541B (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3323615C2 (de) * | 1983-06-30 | 1985-06-27 | Erweka Apparatebau GmbH, 6056 Heusenstamm | Vorrichtung und Verfahren zur Entnahme und Messung von Proben |
SE8307010L (sv) * | 1983-12-19 | 1985-06-20 | Santrade Ltd | Stift for slagborrande borrkrona och borrkrona derfor |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1173325A (en) * | 1966-04-01 | 1969-12-10 | Reed International Inc | Drill bit |
-
1973
- 1973-04-12 ZA ZA732541A patent/ZA732541B/xx unknown
- 1973-04-12 CA CA168,525A patent/CA975389A/en not_active Expired
- 1973-04-19 AU AU54720/73A patent/AU475924B2/en not_active Expired
- 1973-05-04 GB GB2142573A patent/GB1410534A/en not_active Expired
- 1973-05-07 SE SE7306371A patent/SE404055B/xx unknown
- 1973-05-07 NO NO1867/73A patent/NO139495C/no unknown
- 1973-05-08 FR FR7316446A patent/FR2183904A1/fr not_active Withdrawn
- 1973-05-08 JP JP48050400A patent/JPS4961905A/ja active Pending
- 1973-05-08 DE DE2323603A patent/DE2323603A1/de active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1173325A (en) * | 1966-04-01 | 1969-12-10 | Reed International Inc | Drill bit |
Also Published As
Publication number | Publication date |
---|---|
FR2183904A1 (ja) | 1973-12-21 |
NO139495C (no) | 1984-06-21 |
GB1410534A (en) | 1975-10-15 |
SE404055B (sv) | 1978-09-18 |
AU475924B2 (en) | 1976-09-09 |
AU5472073A (en) | 1974-10-24 |
DE2323603A1 (de) | 1973-11-22 |
NO139495B (no) | 1978-12-11 |
CA975389A (en) | 1975-09-30 |
ZA732541B (en) | 1974-03-27 |