NL6404248A - - Google Patents
Info
- Publication number
- NL6404248A NL6404248A NL6404248A NL6404248A NL6404248A NL 6404248 A NL6404248 A NL 6404248A NL 6404248 A NL6404248 A NL 6404248A NL 6404248 A NL6404248 A NL 6404248A NL 6404248 A NL6404248 A NL 6404248A
- Authority
- NL
- Netherlands
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/58—Devices for setting props or chocks
- E21D15/585—Devices for setting props or chocks by means of hydraulically operated devices for mechanical props, or hydraulic props in which the hydraulic part is not important
- E21D15/586—Devices for setting props or chocks by means of hydraulically operated devices for mechanical props, or hydraulic props in which the hydraulic part is not important the props being pre-loaded
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/14—Telescopic props
- E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Nozzles (AREA)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL6404248A NL6404248A (no) | 1964-04-17 | 1964-04-17 | |
| BE646930A BE646930A (no) | 1964-04-17 | 1964-04-23 | |
| GB1991964A GB1024268A (en) | 1964-04-17 | 1964-05-13 | Improvements in and relating to hydraulic pit props |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL6404248A NL6404248A (no) | 1964-04-17 | 1964-04-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL6404248A true NL6404248A (no) | 1965-10-18 |
Family
ID=19789862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL6404248A NL6404248A (no) | 1964-04-17 | 1964-04-17 |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE646930A (no) |
| GB (1) | GB1024268A (no) |
| NL (1) | NL6404248A (no) |
-
1964
- 1964-04-17 NL NL6404248A patent/NL6404248A/xx unknown
- 1964-04-23 BE BE646930A patent/BE646930A/xx unknown
- 1964-05-13 GB GB1991964A patent/GB1024268A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE646930A (no) | 1964-08-17 |
| GB1024268A (en) | 1966-03-30 |