LU38952A1 - - Google Patents
Info
- Publication number
- LU38952A1 LU38952A1 LU38952DA LU38952A1 LU 38952 A1 LU38952 A1 LU 38952A1 LU 38952D A LU38952D A LU 38952DA LU 38952 A1 LU38952 A1 LU 38952A1
- Authority
- LU
- Luxembourg
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
- E21B10/32—Drill bits with leading portion, i.e. drill bits with a pilot cutter; Drill bits for enlarging the borehole, e.g. reamers with expansible cutting tools
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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB24712/59A GB923931A (en) | 1959-07-17 | 1959-07-17 | Improved earth boring under-reaming tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| LU38952A1 true LU38952A1 (en:Method) | 1960-10-14 |
Family
ID=10216052
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| LU38952D LU38952A1 (en:Method) | 1959-07-17 | 1960-07-15 |
Country Status (4)
| Country | Link |
|---|---|
| CH (1) | CH385118A (en:Method) |
| DE (1) | DE1484454B1 (en:Method) |
| GB (1) | GB923931A (en:Method) |
| LU (1) | LU38952A1 (en:Method) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118148502B (zh) * | 2024-05-09 | 2024-07-23 | 河南普申建筑工程有限公司 | 一种工程建设用地质勘察用扩孔装置 |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US21241A (en) * | 1858-08-24 | Railroad-rail | ||
| DE551838C (de) * | 1930-02-04 | 1932-06-04 | Johannes Busch | Bohrgeraet, insbesondere zur Herstellung von Hohlraeumen fuer die Fussverbreiterung von Ortspfaehlen |
| GB395408A (en) * | 1932-01-16 | 1933-07-17 | Arthur Brannan Holmes | Improvements in or relating to earth-boring apparatus |
| FR740514A (fr) * | 1932-07-26 | 1933-01-27 | Appareil d'élargissement des puits et forages | |
| US2031353A (en) * | 1935-08-16 | 1936-02-18 | Woodruff Harvey Ellis | Underreamer |
| GB480848A (en) * | 1937-07-23 | 1938-03-01 | Frank Smith | Improvements in and relating to earth boring apparatus |
| US2397652A (en) * | 1944-02-03 | 1946-04-02 | Jr Woyman B Dunlap | Underreamer |
| US2631013A (en) * | 1948-04-19 | 1953-03-10 | Darin & Armstrong Inc | Hole digging apparatus |
| US2613063A (en) * | 1949-10-31 | 1952-10-07 | Ralph A Ransdall | Undercutting earth auger |
| US2697586A (en) * | 1949-11-26 | 1954-12-21 | Dolen O Talley | Earth underreamer |
| FR1013033A (fr) * | 1950-02-20 | 1952-07-22 | Cie D Entpr S Electr | Dispositif pour creuser un épanouissement à la base d'une fouille |
-
1959
- 1959-07-17 GB GB24712/59A patent/GB923931A/en not_active Expired
-
1960
- 1960-06-02 DE DE19601484454 patent/DE1484454B1/de active Pending
- 1960-07-13 CH CH797260A patent/CH385118A/de unknown
- 1960-07-15 LU LU38952D patent/LU38952A1/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB923931A (en) | 1963-04-18 |
| DE1484454B1 (de) | 1969-09-04 |
| CH385118A (de) | 1964-11-30 |