FR965222A - - Google Patents
Info
- Publication number
- FR965222A FR965222A FR965222DA FR965222A FR 965222 A FR965222 A FR 965222A FR 965222D A FR965222D A FR 965222DA FR 965222 A FR965222 A FR 965222A
- Authority
- FR
- France
- 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
- E21D15/46—Telescopic props with load-measuring devices; with alarm devices
- E21D15/465—Telescopic props with load-measuring devices; with alarm devices with essential hydraulic or pneumatic details
-
- 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
- E21D15/005—Props; Chocks, e.g. made of flexible containers filled with backfilling material characterised by the material
-
- 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
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)
- Actuator (AREA)
- Safety Valves (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB10974/47A GB641894A (en) | 1947-04-24 | 1947-04-24 | Improvements in or relating to pit-props |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR965222A true FR965222A (sh) | 1950-09-06 |
Family
ID=9977734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR965222D Expired FR965222A (sh) | 1947-04-24 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2474464A (sh) |
| BE (1) | BE482083A (sh) |
| FR (1) | FR965222A (sh) |
| GB (1) | GB641894A (sh) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1068200B (sh) * | 1959-11-05 | |||
| US2721051A (en) * | 1949-04-07 | 1955-10-18 | Lobbe Armin | Hydraulic pit props |
| NL152226B (nl) * | 1949-04-07 | Glaverbel | Werkwijze en inrichting voor het vervaardigen van vlak glas, benevens vlak glas vervaardigd onder toepassing van deze werkwijze. | |
| US2695764A (en) * | 1949-10-01 | 1954-11-30 | Grebe Konrad | Mine prop |
| US2830563A (en) * | 1954-03-26 | 1958-04-15 | Burton B Burckhalter | Automatic jack leg |
| DE1131625B (de) * | 1955-08-13 | 1962-06-20 | Kronprinz Ag | Hydraulischer Grubenstempel |
| DE1127841B (de) * | 1955-08-13 | 1962-04-19 | Kronprinz Ag | Hydraulischer Grubenstempel |
| US2973178A (en) * | 1956-10-29 | 1961-02-28 | Schwarz Hermann Kg | Two-part metallic mine prop |
| NL230401A (sh) * | 1957-08-13 | |||
| US3463559A (en) * | 1967-02-20 | 1969-08-26 | Int Harvester Co | Hydraulic track adjuster for tractor |
| US4142449A (en) * | 1976-02-03 | 1979-03-06 | Thyssen Industrie Ag | Hydraulic mine prop |
| DE202004012138U1 (de) * | 2004-08-02 | 2004-10-07 | Dbt Gmbh | Stempelkopflagerung zwischen Kappe und Stempel eines Schildausbaugestells |
| AU2013206571A1 (en) * | 2012-08-17 | 2014-03-06 | Mine Support Products (Pty) Ltd | Prop |
| CN103670459B (zh) * | 2013-11-30 | 2015-08-05 | 河北工业大学 | 一种矿用液压支柱压力实时监测仪 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US752201A (en) * | 1904-02-16 | Fluid-pressure jack | ||
| US1418336A (en) * | 1919-01-13 | 1922-06-06 | Harold I Stage | Pneumatic drill column |
| US1744673A (en) * | 1927-06-10 | 1930-01-21 | Timothy C Pomeroy | Hydraulic jack |
-
0
- FR FR965222D patent/FR965222A/fr not_active Expired
- BE BE482083D patent/BE482083A/xx unknown
-
1947
- 1947-04-24 GB GB10974/47A patent/GB641894A/en not_active Expired
-
1948
- 1948-04-14 US US21023A patent/US2474464A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| BE482083A (sh) | |
| US2474464A (en) | 1949-06-28 |
| GB641894A (en) | 1950-08-23 |