NL264813A - - Google Patents
Info
- Publication number
- NL264813A NL264813A NL264813DA NL264813A NL 264813 A NL264813 A NL 264813A NL 264813D A NL264813D A NL 264813DA NL 264813 A NL264813 A NL 264813A
- Authority
- NL
- Netherlands
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/006—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices
- E21D23/0069—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices without essential advancing shifting devices
-
- 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
- E21D15/15—Means counteracting entry of dirt; Built-in cleaning devices
- E21D15/155—Built-in cleaning devices
-
- 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)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Prostheses (AREA)
- Press Drives And Press Lines (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DESCH27933A DE1132878B (en) | 1960-05-21 | 1960-05-21 | Hydraulic support element for pit construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL264813A true NL264813A (en) |
Family
ID=7430954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL264813D NL264813A (en) | 1960-05-21 |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE1132878B (en) |
| FR (1) | FR1289337A (en) |
| GB (1) | GB972367A (en) |
| NL (1) | NL264813A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL300061A (en) * | 1963-08-19 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2136080A (en) * | 1934-09-19 | 1938-11-08 | Sullivan Machinery Co | Hydraulic abutment device |
| FR1075691A (en) * | 1953-03-16 | 1954-10-19 | New prop | |
| DE1023436B (en) * | 1955-11-24 | 1958-01-30 | Hermann Schwarz Kommanditgesel | Hydraulic pit ram |
| BE557875A (en) * | 1956-05-28 | |||
| DE1024465B (en) * | 1957-05-23 | 1958-02-20 | Kronprinz Ag | Hydraulic pit ram |
-
0
- NL NL264813D patent/NL264813A/xx unknown
-
1960
- 1960-05-21 DE DESCH27933A patent/DE1132878B/en active Pending
-
1961
- 1961-05-18 GB GB18072/61A patent/GB972367A/en not_active Expired
- 1961-05-19 FR FR862270A patent/FR1289337A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE1132878B (en) | 1962-07-12 |
| FR1289337A (en) | 1962-03-30 |
| GB972367A (en) | 1964-10-14 |