ZA862195B - Roof bolting legs - Google Patents
Roof bolting legsInfo
- Publication number
- ZA862195B ZA862195B ZA862195A ZA862195A ZA862195B ZA 862195 B ZA862195 B ZA 862195B ZA 862195 A ZA862195 A ZA 862195A ZA 862195 A ZA862195 A ZA 862195A ZA 862195 B ZA862195 B ZA 862195B
- Authority
- ZA
- South Africa
- Prior art keywords
- legs
- roof bolting
- bolting
- roof
- bolting legs
- Prior art date
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
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
- E21B19/086—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods with a fluid-actuated cylinder
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)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AUPG986985 | 1985-03-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA862195B true ZA862195B (en) | 1986-11-26 |
Family
ID=3770996
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA862195A ZA862195B (en) | 1985-03-22 | 1986-03-24 | Roof bolting legs |
Country Status (2)
Country | Link |
---|---|
GB (1) | GB2172528A (en) |
ZA (1) | ZA862195B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3514428B2 (en) * | 1999-08-24 | 2004-03-31 | 日本ベルボン精機工業株式会社 | Tripod |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3455212A (en) * | 1967-06-16 | 1969-07-15 | Chicago Pneumatic Tool Co | Lightweight,plastic,pneumatic feed leg |
SE424667B (en) * | 1975-09-04 | 1982-08-02 | Oiles Industry Co Ltd | PLASTIC AIR CYLINDER DEVICE |
-
1986
- 1986-03-24 ZA ZA862195A patent/ZA862195B/en unknown
- 1986-03-24 GB GB08607220A patent/GB2172528A/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
GB8607220D0 (en) | 1986-04-30 |
GB2172528A (en) | 1986-09-24 |
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