BE552440A - - Google Patents
Info
- Publication number
- BE552440A BE552440A BE552440DA BE552440A BE 552440 A BE552440 A BE 552440A BE 552440D A BE552440D A BE 552440DA BE 552440 A BE552440 A BE 552440A
- Authority
- BE
- Belgium
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/12—Valves; Arrangement of valves arranged in or on pistons
- F04B53/122—Valves; Arrangement of valves arranged in or on pistons the piston being free-floating, e.g. the valve being formed between the actuating rod and the piston
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- 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
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- 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
- E21D15/60—Devices for withdrawing props or chocks
- E21D15/603—Devices for withdrawing props or chocks by means of hydraulic devices
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
- E21D23/006—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices
- E21D23/0069—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices without essential advancing shifting devices
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Geochemistry & Mineralogy (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Prostheses (AREA)
- Pens And Brushes (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Jet Pumps And Other Pumps (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEE11676A DE1032200B (de) | 1955-12-13 | 1955-12-13 | Hydraulisch betriebenes Stuetzelement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE552440A true BE552440A (enrdf_load_stackoverflow) |
Family
ID=7068144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE552440D BE552440A (enrdf_load_stackoverflow) | 1955-12-13 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3012404A (enrdf_load_stackoverflow) |
| BE (1) | BE552440A (enrdf_load_stackoverflow) |
| DE (1) | DE1032200B (enrdf_load_stackoverflow) |
| FR (1) | FR1167822A (enrdf_load_stackoverflow) |
| GB (1) | GB816247A (enrdf_load_stackoverflow) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3712758A (en) * | 1970-09-10 | 1973-01-23 | Int Harvester Co | Variable displacement pump |
| US3882761A (en) * | 1973-11-14 | 1975-05-13 | Joseph D Snitgen | Fluid stop mechanism |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US16801A (en) * | 1857-03-10 | George lindsay | ||
| US205674A (en) * | 1878-07-02 | Improvement in hydraulic jacks | ||
| US868868A (en) * | 1907-04-05 | 1907-10-22 | Peter Kiefer | Air-motor. |
| US1624151A (en) * | 1925-07-14 | 1927-04-12 | Aladdin Hydraulic Jack Company | Hydraulic jack |
| US1656430A (en) * | 1926-03-16 | 1928-01-17 | Herman D Eberle | Hydraulic jack |
| US1745067A (en) * | 1928-10-30 | 1930-01-28 | Erie Hydraulic Mfg Company | Hydraulic jack |
| DE510708C (de) * | 1929-02-05 | 1930-10-22 | Albert Hamel | Abbaukammer mit in der Hoehe einstellbarem Dach |
| US2119440A (en) * | 1935-12-23 | 1938-05-31 | Timothy C Pomeroy | Hydraulic jack |
| BE486663A (enrdf_load_stackoverflow) * | 1948-01-12 | |||
| DE924686C (de) * | 1951-11-30 | 1955-03-07 | Emil Weber | Hydraulische Setzvorrichtung fuer Stempel |
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0
- BE BE552440D patent/BE552440A/xx unknown
-
1955
- 1955-12-13 DE DEE11676A patent/DE1032200B/de active Pending
-
1956
- 1956-11-16 GB GB35173/56A patent/GB816247A/en not_active Expired
- 1956-11-23 FR FR1167822D patent/FR1167822A/fr not_active Expired
- 1956-12-13 US US628112A patent/US3012404A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE1032200B (de) | 1958-06-19 |
| US3012404A (en) | 1961-12-12 |
| GB816247A (en) | 1959-07-08 |
| FR1167822A (fr) | 1958-12-01 |