FR1177929A - Perfectionnements apportés aux étançons de mine hydrauliques - Google Patents
Perfectionnements apportés aux étançons de mine hydrauliquesInfo
- Publication number
- FR1177929A FR1177929A FR1177929DA FR1177929A FR 1177929 A FR1177929 A FR 1177929A FR 1177929D A FR1177929D A FR 1177929DA FR 1177929 A FR1177929 A FR 1177929A
- Authority
- FR
- France
- Prior art keywords
- mine props
- hydraulic mine
- hydraulic
- props
- mine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
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
-
- 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)
- Safety Valves (AREA)
- Check Valves (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEB40795A DE1081397B (de) | 1956-06-25 | 1956-06-25 | Hydraulischer Grubenstempel |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1177929A true FR1177929A (fr) | 1959-04-30 |
Family
ID=6966190
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1177929D Expired FR1177929A (fr) | 1956-06-25 | 1957-06-24 | Perfectionnements apportés aux étançons de mine hydrauliques |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE1081397B (fr) |
FR (1) | FR1177929A (fr) |
GB (1) | GB868073A (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2941168A1 (de) * | 1979-10-11 | 1981-04-23 | Thyssen Industrie Ag, 4300 Essen | Hydraulisch betaetigbares schubkolbengetriebe, vornehmlich zur verwendung im bergbau |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE526791A (fr) * | 1953-02-25 | |||
DE943825C (de) * | 1954-12-31 | 1956-06-01 | Gutehoffnungshuette Sterkrade | Hydraulischer Grubenstempel |
-
1956
- 1956-06-25 DE DEB40795A patent/DE1081397B/de active Pending
-
1957
- 1957-05-23 GB GB1636157A patent/GB868073A/en not_active Expired
- 1957-06-24 FR FR1177929D patent/FR1177929A/fr not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB868073A (en) | 1961-05-17 |
DE1081397B (de) | 1960-05-12 |
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