NL295875A - - Google Patents
Info
- Publication number
- NL295875A NL295875A NL295875DA NL295875A NL 295875 A NL295875 A NL 295875A NL 295875D A NL295875D A NL 295875DA NL 295875 A NL295875 A NL 295875A
- 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
- E21D15/14—Telescopic props
- E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props
- E21D15/45—Hydraulic, pneumatic, or hydraulic-pneumatic props having closed fluid system, e.g. with built-in pumps or accumulators
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)
- Details Of Reciprocating Pumps (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB29288/62A GB1030574A (en) | 1962-07-31 | 1962-07-31 | Improvements in or relating to hydraulic props |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL295875A true NL295875A (lt) |
Family
ID=10289161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL295875D NL295875A (lt) | 1962-07-31 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3180093A (lt) |
| BE (1) | BE634933A (lt) |
| GB (1) | GB1030574A (lt) |
| NL (1) | NL295875A (lt) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1086532A (en) * | 1964-01-18 | 1967-10-11 | Dobson Ltd W E & F | Improvements in and relating to hydraulic mine roof supports |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US686183A (en) * | 1899-05-22 | 1901-11-05 | Jay W Watkins | Fire-extinguisher. |
| US1212757A (en) * | 1914-11-05 | 1917-01-16 | Carl A Waldron | Hydraulic jack. |
| US1344919A (en) * | 1919-05-05 | 1920-06-29 | Alexander W Marr | Hydraulic jack |
| GB902188A (en) * | 1960-04-09 | 1962-07-25 | Mastabar Mining Equip Co Ltd | Improvements in or relating to hydraulic supports |
-
0
- BE BE634933D patent/BE634933A/xx unknown
- NL NL295875D patent/NL295875A/xx unknown
-
1962
- 1962-07-31 GB GB29288/62A patent/GB1030574A/en not_active Expired
-
1963
- 1963-07-02 US US292274A patent/US3180093A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| BE634933A (lt) | |
| GB1030574A (en) | 1966-05-25 |
| US3180093A (en) | 1965-04-27 |