NL218204A - - Google Patents
Info
- Publication number
- NL218204A NL218204A NL218204DA NL218204A NL 218204 A NL218204 A NL 218204A NL 218204D A NL218204D A NL 218204DA NL 218204 A NL218204 A NL 218204A
- Authority
- NL
- Netherlands
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
- B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
- B66F3/25—Constructional features
- B66F3/42—Constructional features with self-contained pumps, e.g. actuated by hand
-
- 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
-
- 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
- E21D15/50—Component parts or details of props
- E21D15/51—Component parts or details of props specially adapted to hydraulic, pneumatic, or hydraulic-pneumatic props, e.g. arrangements of relief valves
- E21D15/512—Arrangement of valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/10—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with auxiliary valve for fluid operation of the main valve
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- General Engineering & Computer Science (AREA)
- Safety Valves (AREA)
- Ink Jet (AREA)
- Control Of Presses (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEW19284A DE1013245B (de) | 1956-06-21 | 1956-06-21 | Hydraulischer Grubenstempel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL218204A true NL218204A (fr) |
Family
ID=7596449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL218204D NL218204A (fr) | 1956-06-21 |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE558508A (fr) |
| DE (1) | DE1013245B (fr) |
| FR (1) | FR1176775A (fr) |
| GB (1) | GB866239A (fr) |
| NL (1) | NL218204A (fr) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL218917A (fr) * | 1956-10-16 | |||
| DE1193458B (de) * | 1958-08-11 | 1965-05-26 | Dobson Ltd W E & F | Wandernder Grubenausbau |
| DE1134947B (de) * | 1960-03-23 | 1962-08-23 | Dowty Mining Equipment Ltd | Wandernder Grubenausbau zur Abstuetzung des Hangenden |
| DE1153705B (de) * | 1960-10-01 | 1963-09-05 | Rheinstahl Gmbh Wanheim | Hydraulischer Grubenstempel |
| NL277490A (fr) * | 1961-04-20 | |||
| BE635501A (fr) * | 1962-07-27 | 1964-01-27 |
-
0
- BE BE558508D patent/BE558508A/xx unknown
- NL NL218204D patent/NL218204A/xx unknown
-
1956
- 1956-06-21 DE DEW19284A patent/DE1013245B/de active Pending
-
1957
- 1957-06-05 GB GB1792257A patent/GB866239A/en not_active Expired
- 1957-06-18 FR FR1176775D patent/FR1176775A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE1013245B (de) | 1957-08-08 |
| GB866239A (en) | 1961-04-26 |
| FR1176775A (fr) | 1959-04-15 |
| BE558508A (fr) |