NL71840C - - Google Patents
Info
- Publication number
- NL71840C NL71840C NL116952A NL116952A NL71840C NL 71840 C NL71840 C NL 71840C NL 116952 A NL116952 A NL 116952A NL 116952 A NL116952 A NL 116952A NL 71840 C NL71840 C NL 71840C
- Authority
- NL
- Netherlands
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D11/00—Portable percussive tools with electromotor or other motor drive
- B25D11/06—Means for driving the impulse member
- B25D11/064—Means for driving the impulse member using an electromagnetic drive
-
- 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
- E21B1/12—Percussion drilling with a reciprocating impulse member
- E21B1/22—Percussion drilling with a reciprocating impulse member driven by electromagnets
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL116952D NL116952B (en(2012)) | 1944-05-23 | 1944-05-23 | |
| NL116952A NL71840C (en(2012)) | 1944-05-23 | 1944-05-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL116952A NL71840C (en(2012)) | 1944-05-23 | 1944-05-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL71840C true NL71840C (en(2012)) | 1953-02-17 |
Family
ID=1823252
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL116952A NL71840C (en(2012)) | 1944-05-23 | 1944-05-23 | |
| NL116952D NL116952B (en(2012)) | 1944-05-23 | 1944-05-23 |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL116952D NL116952B (en(2012)) | 1944-05-23 | 1944-05-23 |
Country Status (1)
| Country | Link |
|---|---|
| NL (2) | NL71840C (en(2012)) |
-
1944
- 1944-05-23 NL NL116952A patent/NL71840C/xx active
- 1944-05-23 NL NL116952D patent/NL116952B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NL116952B (en(2012)) | 1952-10-15 |