AU440842B2 - Improvements in or relating toa percussion mechanism - Google Patents
Improvements in or relating toa percussion mechanismInfo
- Publication number
- AU440842B2 AU440842B2 AU25771/71A AU2577171A AU440842B2 AU 440842 B2 AU440842 B2 AU 440842B2 AU 25771/71 A AU25771/71 A AU 25771/71A AU 2577171 A AU2577171 A AU 2577171A AU 440842 B2 AU440842 B2 AU 440842B2
- Authority
- AU
- Australia
- Prior art keywords
- percussion mechanism
- relating toa
- toa
- relating
- percussion
- 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.)
- Expired
Links
- 238000009527 percussion Methods 0.000 title 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
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/06—Down-hole impacting means, e.g. hammers
- E21B4/14—Fluid operated hammers
-
- 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)
- Percussive Tools And Related Accessories (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11411571A | 1971-02-10 | 1971-02-10 |
Publications (2)
Publication Number | Publication Date |
---|---|
AU2577171A AU2577171A (en) | 1972-08-24 |
AU440842B2 true AU440842B2 (en) | 1973-09-17 |
Family
ID=22353427
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU25771/71A Expired AU440842B2 (en) | 1971-02-10 | 1971-02-23 | Improvements in or relating toa percussion mechanism |
Country Status (2)
Country | Link |
---|---|
US (1) | US3732936A (en) |
AU (1) | AU440842B2 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4261249A (en) * | 1978-09-08 | 1981-04-14 | Joy Manufacturing Company | Hammer |
AU2002235745A1 (en) * | 2000-12-02 | 2002-06-11 | Tracto-Technik Gmbh | Pneumatic rock-boring device and method for horizontal drilling using compressed air and drilling medium |
US7588660B2 (en) * | 2002-10-07 | 2009-09-15 | Georgia-Pacific Consumer Products Lp | Wet-pressed tissue and towel products with elevated CD stretch and low tensile ratios made with a high solids fabric crepe process |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US803877A (en) * | 1903-06-15 | 1905-11-07 | Joseph H Champ | Implement for imparting vibratory impacts. |
US1440082A (en) * | 1918-10-05 | 1922-12-26 | Babcock & Wilcox Co | Fluid-actuated hammer |
US2001190A (en) * | 1932-12-05 | 1935-05-14 | Aro Equipment Corp | Nonsticking pneumatic hammer grease gun |
-
1971
- 1971-02-10 US US00114115A patent/US3732936A/en not_active Expired - Lifetime
- 1971-02-23 AU AU25771/71A patent/AU440842B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US3732936A (en) | 1973-05-15 |
AU2577171A (en) | 1972-08-24 |
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