BE557875A - - Google Patents
Info
- Publication number
- BE557875A BE557875A BE557875DA BE557875A BE 557875 A BE557875 A BE 557875A BE 557875D A BE557875D A BE 557875DA BE 557875 A BE557875 A BE 557875A
- Authority
- BE
- Belgium
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
-
- 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)
- General Engineering & Computer Science (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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT195874T | 1956-05-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE557875A true BE557875A (enrdf_load_html_response) |
Family
ID=29554731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE557875D BE557875A (enrdf_load_html_response) | 1956-05-28 |
Country Status (4)
| Country | Link |
|---|---|
| AT (1) | AT195874B (enrdf_load_html_response) |
| BE (1) | BE557875A (enrdf_load_html_response) |
| DE (1) | DE1408060A1 (enrdf_load_html_response) |
| FR (1) | FR1175838A (enrdf_load_html_response) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL264813A (enrdf_load_html_response) * | 1960-05-21 | |||
| DE1137406B (de) * | 1960-06-30 | 1962-10-04 | Kronprinz Ag | Hydraulischer Grubenstempel |
| DE1231648B (de) * | 1960-08-11 | 1967-01-05 | Bochumer Eisen Heintzmann | Hydraulisches Ausbauelement, insbesondere fuer den untertaegigen Grubenbetrieb |
-
0
- BE BE557875D patent/BE557875A/xx unknown
-
1956
- 1956-05-28 AT AT195874D patent/AT195874B/de active
-
1957
- 1957-05-21 DE DE19571408060 patent/DE1408060A1/de active Pending
- 1957-05-28 FR FR1175838D patent/FR1175838A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR1175838A (fr) | 1959-04-02 |
| AT195874B (de) | 1958-02-25 |
| DE1408060A1 (de) | 1968-10-17 |