IE820955L - Extension coupling - Google Patents
Extension couplingInfo
- Publication number
- IE820955L IE820955L IE820955A IE95582A IE820955L IE 820955 L IE820955 L IE 820955L IE 820955 A IE820955 A IE 820955A IE 95582 A IE95582 A IE 95582A IE 820955 L IE820955 L IE 820955L
- Authority
- IE
- Ireland
- Prior art keywords
- screw
- coupling
- rod
- thread
- threaded portion
- Prior art date
Links
- 230000008878 coupling Effects 0.000 title abstract 5
- 238000010168 coupling process Methods 0.000 title abstract 5
- 238000005859 coupling reaction Methods 0.000 title abstract 5
- 238000005452 bending Methods 0.000 abstract 1
- 238000005553 drilling Methods 0.000 abstract 1
- 239000011435 rock Substances 0.000 abstract 1
- 230000008093 supporting effect Effects 0.000 abstract 1
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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/042—Threaded
- E21B17/0426—Threaded with a threaded cylindrical portion, e.g. for percussion rods
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)
Abstract
An extension coupling for rock drilling equipment comprises a coupling rod (1) having a screw-threaded portion (3) with an outer thread whose diameter is smaller than the diameter of the non-threaded portion (6) of the rod, and a sleeve-like part (2) with a portion (4) having an internal screw-thread which corresponds to the outer screw-thread of the rod. The screw-like part (2) includes an extension (5) in the form of a plain skirt-like part which extends from the screw-threaded portion (4) of the sleeve-like part to the outer end thereof and which embraces a part (6) of the plain portion of the coupling rod. The skirt (5) according to the invention provides a supporting effect which reduces the occurrence of bending stresses on the coupling.
[WO8203653A1]
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8102626A SE426089B (en) | 1981-04-24 | 1981-04-24 | CUTTING COMPOUNDS FOR MOUNTAIN DRILL EQUIPMENT |
Publications (2)
Publication Number | Publication Date |
---|---|
IE820955L true IE820955L (en) | 1982-10-24 |
IE52613B1 IE52613B1 (en) | 1987-12-23 |
Family
ID=20343676
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IE955/82A IE52613B1 (en) | 1981-04-24 | 1982-04-23 | An extension coupling for rock drilling equipment |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP0077336B1 (en) |
AU (1) | AU547091B2 (en) |
CA (1) | CA1178944A (en) |
DE (1) | DE3264233D1 (en) |
FI (1) | FI77303C (en) |
IE (1) | IE52613B1 (en) |
SE (1) | SE426089B (en) |
WO (1) | WO1982003653A1 (en) |
ZA (1) | ZA822203B (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2553171B1 (en) * | 1983-10-03 | 1988-04-08 | Dril Quip Inc | APPARATUS AND METHOD FOR CONNECTING PARTICULARLY CYLINDRICAL ELEMENTS SUCH AS TUBES |
SE8600199L (en) * | 1986-01-17 | 1987-07-18 | Loevab Loef Och Oestlund Ab | Drilling Tools |
US5622820A (en) * | 1988-03-10 | 1997-04-22 | City Of Hope | Method for amplification and detection of RNA and DNA sequences |
SE522221C2 (en) | 2001-10-12 | 2004-01-27 | Sandvik Ab | Striking rock drill joints |
JP4954542B2 (en) | 2005-12-09 | 2012-06-20 | 三菱マテリアル株式会社 | Drilling rod, drilling bit and drilling tool |
WO2007133150A1 (en) * | 2006-05-17 | 2007-11-22 | Sandvik Intellectual Property Ab | A top hammer rock-drilling tool, a drill rod and coupling sleeve |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2122757A (en) * | 1935-07-05 | 1938-07-05 | Hughes Tool Co | Drill stem coupling |
SE401232B (en) * | 1970-05-04 | 1978-04-24 | Sandvik Ab | THREADED CONNECTION FOR IMPACT BRUSHES |
-
1981
- 1981-04-24 SE SE8102626A patent/SE426089B/en not_active IP Right Cessation
-
1982
- 1982-03-26 AU AU82756/82A patent/AU547091B2/en not_active Ceased
- 1982-03-26 WO PCT/SE1982/000091 patent/WO1982003653A1/en active IP Right Grant
- 1982-03-26 EP EP82901041A patent/EP0077336B1/en not_active Expired
- 1982-03-26 DE DE8282901041T patent/DE3264233D1/en not_active Expired
- 1982-03-31 ZA ZA822203A patent/ZA822203B/en unknown
- 1982-04-08 CA CA000400710A patent/CA1178944A/en not_active Expired
- 1982-04-23 IE IE955/82A patent/IE52613B1/en unknown
- 1982-12-16 FI FI824324A patent/FI77303C/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
CA1178944A (en) | 1984-12-04 |
AU8275682A (en) | 1982-11-04 |
SE8102626L (en) | 1982-10-25 |
DE3264233D1 (en) | 1985-08-01 |
FI824324L (en) | 1982-12-16 |
FI77303B (en) | 1988-10-31 |
WO1982003653A1 (en) | 1982-10-28 |
SE426089B (en) | 1982-12-06 |
ZA822203B (en) | 1983-02-23 |
IE52613B1 (en) | 1987-12-23 |
AU547091B2 (en) | 1985-10-03 |
FI77303C (en) | 1989-02-10 |
EP0077336A1 (en) | 1983-04-27 |
FI824324A0 (en) | 1982-12-16 |
EP0077336B1 (en) | 1985-06-19 |
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