JPS4888703A - - Google Patents
Info
- Publication number
- JPS4888703A JPS4888703A JP47079577A JP7957772A JPS4888703A JP S4888703 A JPS4888703 A JP S4888703A JP 47079577 A JP47079577 A JP 47079577A JP 7957772 A JP7957772 A JP 7957772A JP S4888703 A JPS4888703 A JP S4888703A
- 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.)
- Granted
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
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)
- Drilling Tools (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US22482572A | 1972-02-09 | 1972-02-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS4888703A true JPS4888703A (enrdf_load_html_response) | 1973-11-20 |
| JPS5526270B2 JPS5526270B2 (enrdf_load_html_response) | 1980-07-11 |
Family
ID=22842380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7957772A Expired JPS5526270B2 (enrdf_load_html_response) | 1972-02-09 | 1972-08-10 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3747999A (enrdf_load_html_response) |
| JP (1) | JPS5526270B2 (enrdf_load_html_response) |
| CA (1) | CA964678A (enrdf_load_html_response) |
| DE (1) | DE2251770C2 (enrdf_load_html_response) |
| SE (1) | SE392498B (enrdf_load_html_response) |
| ZA (1) | ZA724119B (enrdf_load_html_response) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE415994B (sv) * | 1975-01-27 | 1980-11-17 | Sandvik Ab | Anordning vid rullborrkronor |
| US4089382A (en) * | 1977-04-04 | 1978-05-16 | Hughes Tool Company | Cutter mounting for a large hole earth boring bit |
| US4241799A (en) * | 1979-10-17 | 1980-12-30 | Hughes Tool Company | Protected cutter mounting for drill bits |
| US4760890A (en) * | 1987-05-18 | 1988-08-02 | Tamrock Inc. | Cutter assembly for rotary boring of earth |
| DE4202078C2 (de) * | 1992-01-25 | 1997-05-28 | Audi Ag | Lageranordnung |
| CN114837558A (zh) * | 2022-05-27 | 2022-08-02 | 重庆交通大学 | 一种基于凿岩台车的异形孔定向开槽刀头套具 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1444074A (en) * | 1922-04-20 | 1923-02-06 | Hughes Tool Co | Cross-roller drill |
| US3601207A (en) * | 1969-05-19 | 1971-08-24 | Lawrence Mfg Co | Cutter assembly |
-
1972
- 1972-02-09 US US00224825A patent/US3747999A/en not_active Expired - Lifetime
- 1972-06-14 SE SE7207813A patent/SE392498B/xx unknown
- 1972-06-14 CA CA144,729A patent/CA964678A/en not_active Expired
- 1972-06-15 ZA ZA724119A patent/ZA724119B/xx unknown
- 1972-08-10 JP JP7957772A patent/JPS5526270B2/ja not_active Expired
- 1972-10-21 DE DE2251770A patent/DE2251770C2/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE2251770C2 (de) | 1982-04-15 |
| DE2251770A1 (de) | 1973-08-16 |
| CA964678A (en) | 1975-03-18 |
| ZA724119B (en) | 1973-03-28 |
| US3747999A (en) | 1973-07-24 |
| SE392498B (sv) | 1977-03-28 |
| JPS5526270B2 (enrdf_load_html_response) | 1980-07-11 |