NL248713A - - Google Patents
Info
- Publication number
- NL248713A NL248713A NL248713DA NL248713A NL 248713 A NL248713 A NL 248713A NL 248713D A NL248713D A NL 248713DA NL 248713 A NL248713 A NL 248713A
- 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
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)
- Safety Valves (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB618959A GB901168A (en) | 1959-02-23 | 1959-02-23 | Improvements in hydraulic props or struts |
| GB1755159 | 1959-05-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL248713A true NL248713A (pl) |
Family
ID=26240510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL248713D NL248713A (pl) | 1959-02-23 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3000358A (pl) |
| DE (1) | DE1145122B (pl) |
| FR (1) | FR1249070A (pl) |
| NL (1) | NL248713A (pl) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1026411A (en) * | 1962-05-07 | 1966-04-20 | Lansing Bagnall Ltd | Improvements in or relating to industrial trucks |
| GB1022469A (en) * | 1964-02-11 | 1966-03-16 | Dowty Mining Equipment Ltd | Roof support assembly suitable for use in mines |
| US3281107A (en) * | 1965-12-15 | 1966-10-25 | Ohio Brass Co | Hydraulic support prop |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1699917A (en) * | 1924-11-08 | 1929-01-22 | Jeremiah E Madden | Hydraulic apparatus |
| US1899534A (en) * | 1930-05-05 | 1933-02-28 | Curtis Mfg Co | Automobile lift |
| US2402265A (en) * | 1945-02-15 | 1946-06-18 | Globe Hoist Co | Vehicle lift |
| BE486663A (pl) * | 1948-01-12 | |||
| GB640414A (en) * | 1948-03-06 | 1950-07-19 | Mavor & Coulson Ltd | Improvements in props |
| DE928945C (de) * | 1951-06-09 | 1955-06-16 | Eisenwerk Wanheim G M B H | Verstellbarer hydraulischer Grubenstempel |
| DE1044003B (de) * | 1952-06-16 | 1958-11-20 | Mining Engineering Co Ltd | Hydraulische Hangendtragvorrichtung bzw. Grubenstempel |
| DE1020945B (de) * | 1955-03-14 | 1957-12-19 | Ewald Wiemann Maschf | Setz- und Raubventil fuer hydraulische Grubenstempel |
| NL230401A (pl) * | 1957-08-13 |
-
0
- NL NL248713D patent/NL248713A/xx unknown
-
1960
- 1960-02-15 US US8796A patent/US3000358A/en not_active Expired - Lifetime
- 1960-02-20 DE DED32700A patent/DE1145122B/de active Pending
- 1960-02-23 FR FR819351A patent/FR1249070A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US3000358A (en) | 1961-09-19 |
| DE1145122B (de) | 1963-03-14 |
| FR1249070A (fr) | 1960-12-23 |