FR1376822A - étançon télescopique - Google Patents
étançon télescopiqueInfo
- Publication number
- FR1376822A FR1376822A FR950865A FR950865A FR1376822A FR 1376822 A FR1376822 A FR 1376822A FR 950865 A FR950865 A FR 950865A FR 950865 A FR950865 A FR 950865A FR 1376822 A FR1376822 A FR 1376822A
- Authority
- FR
- France
- Prior art keywords
- telescopic prop
- prop
- telescopic
- 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
- E21D15/50—Component parts or details of props
- E21D15/54—Details of the ends of props
- E21D15/55—Details of the ends of props of prop heads or feet
-
- 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
- E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
- E21D15/30—Telescopic props with parts held relatively to each other by friction or gripping by means expanded or contracted by pressure applied through the medium of a fluid or quasi- fluid, e.g. rubber
- E21D15/306—Telescopic props with parts held relatively to each other by friction or gripping by means expanded or contracted by pressure applied through the medium of a fluid or quasi- fluid, e.g. rubber by means of a liquid
-
- 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)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR950865A FR1376822A (fr) | 1962-10-19 | 1963-10-17 | étançon télescopique |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB39568/62A GB1034334A (en) | 1962-10-19 | 1962-10-19 | Telescopic pit prop |
FR950865A FR1376822A (fr) | 1962-10-19 | 1963-10-17 | étançon télescopique |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1376822A true FR1376822A (fr) | 1964-10-31 |
Family
ID=26203928
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR950865A Expired FR1376822A (fr) | 1962-10-19 | 1963-10-17 | étançon télescopique |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR1376822A (fr) |
-
1963
- 1963-10-17 FR FR950865A patent/FR1376822A/fr not_active Expired
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