NL249704A - - Google Patents
Info
- Publication number
- NL249704A NL249704A NL249704DA NL249704A NL 249704 A NL249704 A NL 249704A NL 249704D A NL249704D A NL 249704DA NL 249704 A NL249704 A NL 249704A
- Authority
- NL
- Netherlands
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DESCH25772A DE1080499B (en) | 1959-03-23 | 1959-03-23 | Flexible hydraulic support element for underground mining |
| DESCH25993A DE1089350B (en) | 1959-03-23 | 1959-05-02 | Flexible hydraulic support element for underground mining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL249704A true NL249704A (en) |
Family
ID=25992768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL249704D NL249704A (en) | 1959-03-23 |
Country Status (3)
| Country | Link |
|---|---|
| DE (2) | DE1080499B (en) |
| GB (1) | GB942471A (en) |
| NL (1) | NL249704A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3665719A (en) * | 1969-05-28 | 1972-05-30 | Atlantic Richfield Co | Apparatus for counterstressing in situ rock for support of underground openings |
| DE4224852C2 (en) * | 1992-07-28 | 1997-06-12 | Langerbein Scharf Gmbh & Co Kg | Pipe support, especially for underground mining and tunneling |
| CN102844523B (en) | 2010-02-19 | 2014-09-24 | 科学与工业研究会 | A device for roof support of underground mine/tunnel |
-
0
- NL NL249704D patent/NL249704A/xx unknown
-
1959
- 1959-03-23 DE DESCH25772A patent/DE1080499B/en active Pending
- 1959-05-02 DE DESCH25993A patent/DE1089350B/en active Pending
-
1960
- 1960-03-22 GB GB1003160A patent/GB942471A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE1089350B (en) | 1960-09-22 |
| DE1080499B (en) | 1960-04-28 |
| GB942471A (en) | 1963-11-20 |