JPS494417B1 - - Google Patents
Info
- Publication number
- JPS494417B1 JPS494417B1 JP45080441A JP8044170A JPS494417B1 JP S494417 B1 JPS494417 B1 JP S494417B1 JP 45080441 A JP45080441 A JP 45080441A JP 8044170 A JP8044170 A JP 8044170A JP S494417 B1 JPS494417 B1 JP S494417B1
- Authority
- JP
- Japan
- 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.)
- Pending
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
- E21D15/50—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
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Safety Valves (AREA)
- Lift Valve (AREA)
- Lining And Supports For Tunnels (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19691946571 DE1946571C3 (de) | 1969-09-13 | Ventil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS494417B1 true JPS494417B1 (ja) | 1974-01-31 |
Family
ID=5745488
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP45080441A Pending JPS494417B1 (ja) | 1969-09-13 | 1970-09-14 |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS494417B1 (ja) |
| BE (1) | BE756058A (ja) |
| FR (1) | FR2061188A5 (ja) |
| GB (1) | GB1291629A (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110219682A (zh) * | 2019-05-31 | 2019-09-10 | 平顶山平煤机煤矿机械装备有限公司 | 具有高弹性可拆卸装置的抗冲击立柱 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2612953C3 (de) * | 1976-03-26 | 1979-08-30 | Bochumer Eisenhuette Heintzmann Gmbh & Co, 4630 Bochum | Druckbegrenzungsventil für hydraulische Grubenstempel |
-
0
- BE BE756058D patent/BE756058A/xx unknown
-
1970
- 1970-09-09 FR FR7032766A patent/FR2061188A5/fr not_active Expired
- 1970-09-14 GB GB4380570A patent/GB1291629A/en not_active Expired
- 1970-09-14 JP JP45080441A patent/JPS494417B1/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110219682A (zh) * | 2019-05-31 | 2019-09-10 | 平顶山平煤机煤矿机械装备有限公司 | 具有高弹性可拆卸装置的抗冲击立柱 |
Also Published As
| Publication number | Publication date |
|---|---|
| GB1291629A (en) | 1972-10-04 |
| DE1946571A1 (de) | 1971-03-25 |
| FR2061188A5 (ja) | 1971-06-18 |
| DE1946571B2 (de) | 1976-01-08 |
| BE756058A (fr) | 1971-02-15 |