JPS4839321B1 - - Google Patents
Info
- Publication number
- JPS4839321B1 JPS4839321B1 JP43047462A JP4746268A JPS4839321B1 JP S4839321 B1 JPS4839321 B1 JP S4839321B1 JP 43047462 A JP43047462 A JP 43047462A JP 4746268 A JP4746268 A JP 4746268A JP S4839321 B1 JPS4839321 B1 JP S4839321B1
- Authority
- JP
- Japan
- 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.)
- Pending
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
- E21B1/00—Percussion drilling
- E21B1/38—Hammer piston type, i.e. in which the tool bit or anvil is hit by an impulse member
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
- B25D9/14—Control devices for the reciprocating piston
- B25D9/26—Control devices for adjusting the stroke of the piston or the force or frequency of impact thereof
- B25D9/265—Control devices for adjusting the stroke of the piston or the force or frequency of impact thereof with arrangements for automatic stopping when the tool is lifted from the working face or suffers excessive bore resistance
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Automation & Control Theory (AREA)
- Percussive Tools And Related Accessories (AREA)
- Earth Drilling (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US68357867A | 1967-11-16 | 1967-11-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS4839321B1 true JPS4839321B1 (2) | 1973-11-22 |
Family
ID=24744634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP43047462A Pending JPS4839321B1 (2) | 1967-11-16 | 1968-07-08 |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3464500A (2) |
| JP (1) | JPS4839321B1 (2) |
| FR (1) | FR1572089A (2) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE368055C (sv) * | 1972-03-10 | 1981-04-13 | Atlas Copco Ab | Anordning vid bergborrmaskiner |
| CA1071946A (en) * | 1975-10-24 | 1980-02-19 | George A. Hibbard | Rock drill |
| JPS5238102U (2) * | 1976-08-05 | 1977-03-17 | ||
| DE2832169A1 (de) * | 1978-07-21 | 1980-01-31 | Hilti Ag | Motorisch betriebener bohrhammer |
| SU945412A2 (ru) * | 1978-12-27 | 1982-07-23 | Ордена Трудового Красного Знамени институт гидродинамики СО АН СССР | Устройство ударного действи |
| US4453773A (en) * | 1982-12-30 | 1984-06-12 | Toffolon Roger L | Pavement breaking apparatus |
| SE469323B (sv) * | 1986-05-14 | 1993-06-21 | Rune Ericsson | Ett slagredskap |
| MX2019000250A (es) * | 2016-06-24 | 2019-10-09 | Berry Metal Co | Dispositivo de perforacion neumatico. |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US897958A (en) * | 1899-09-26 | 1908-09-08 | Chicago Pneumatic Tool Co | Pneumatic hammer. |
| DE455988C (de) * | 1926-05-26 | 1928-02-14 | Maschb Akt Ges H Flottmann & C | Pressluftwerkzeug |
| US3045768A (en) * | 1958-07-14 | 1962-07-24 | Gardner Denver Co | Fluid operated percussion drill |
| US3305953A (en) * | 1963-08-15 | 1967-02-28 | Mehren Oswald Von | Pneumatic tooth for earth excavator |
-
1967
- 1967-11-16 US US683578A patent/US3464500A/en not_active Expired - Lifetime
-
1968
- 1968-07-08 JP JP43047462A patent/JPS4839321B1/ja active Pending
- 1968-07-23 FR FR1572089D patent/FR1572089A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US3464500A (en) | 1969-09-02 |
| FR1572089A (2) | 1969-06-20 |