EP0462821A3 - Swivel assembly for a pneumatic underground piercing tool - Google Patents
Swivel assembly for a pneumatic underground piercing tool Download PDFInfo
- Publication number
- EP0462821A3 EP0462821A3 EP19910305550 EP91305550A EP0462821A3 EP 0462821 A3 EP0462821 A3 EP 0462821A3 EP 19910305550 EP19910305550 EP 19910305550 EP 91305550 A EP91305550 A EP 91305550A EP 0462821 A3 EP0462821 A3 EP 0462821A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- swivel assembly
- piercing tool
- underground piercing
- pneumatic
- pneumatic underground
- Prior art date
- 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.)
- Withdrawn
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
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/06—Down-hole impacting means, e.g. hammers
- E21B4/14—Fluid operated hammers
- E21B4/145—Fluid operated hammers of the self propelled-type, e.g. with a reverse mode to retract the device from the hole
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)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US54105490A | 1990-06-20 | 1990-06-20 | |
US541054 | 1990-06-20 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0462821A2 EP0462821A2 (en) | 1991-12-27 |
EP0462821A3 true EP0462821A3 (en) | 1993-01-27 |
Family
ID=24158005
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19910305550 Withdrawn EP0462821A3 (en) | 1990-06-20 | 1991-06-19 | Swivel assembly for a pneumatic underground piercing tool |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP0462821A3 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111852325B (en) * | 2020-07-28 | 2022-12-27 | 浙江开山钎具有限公司 | Down-the-hole hammer |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1170167A (en) * | 1967-03-14 | 1969-11-12 | Inst Gornogo Dela Sibirskogo O | Percussion Ground-Burrowing Device. |
GB1530857A (en) * | 1977-06-23 | 1978-11-01 | Inst Gor Dela Sibir Otdel An S | Reversible pneumatic percussive device |
US4662457A (en) * | 1984-10-19 | 1987-05-05 | Allied Steel & Tractor Products, Inc. | Reversible underground piercing device |
EP0224859A1 (en) * | 1985-11-27 | 1987-06-10 | Oklahoma Airrow, Inc. | Air driven impact operated ground piercing tool |
EP0301287A2 (en) * | 1987-07-25 | 1989-02-01 | Paul Schmidt | Boring ram |
-
1991
- 1991-06-19 EP EP19910305550 patent/EP0462821A3/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1170167A (en) * | 1967-03-14 | 1969-11-12 | Inst Gornogo Dela Sibirskogo O | Percussion Ground-Burrowing Device. |
GB1530857A (en) * | 1977-06-23 | 1978-11-01 | Inst Gor Dela Sibir Otdel An S | Reversible pneumatic percussive device |
US4662457A (en) * | 1984-10-19 | 1987-05-05 | Allied Steel & Tractor Products, Inc. | Reversible underground piercing device |
EP0224859A1 (en) * | 1985-11-27 | 1987-06-10 | Oklahoma Airrow, Inc. | Air driven impact operated ground piercing tool |
EP0301287A2 (en) * | 1987-07-25 | 1989-02-01 | Paul Schmidt | Boring ram |
Also Published As
Publication number | Publication date |
---|---|
EP0462821A2 (en) | 1991-12-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU NL SE |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU NL SE |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19930728 |