BE532039A - - Google Patents
Info
- Publication number
- BE532039A BE532039A BE532039DA BE532039A BE 532039 A BE532039 A BE 532039A BE 532039D A BE532039D A BE 532039DA BE 532039 A BE532039 A BE 532039A
- Authority
- BE
- Belgium
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
- E21D15/15—Means counteracting entry of dirt; Built-in cleaning devices
- E21D15/155—Built-in cleaning devices
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/87265—Dividing into parallel flow paths with recombining
- Y10T137/87378—Second valve assembly carried by first valve head
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)
- Reciprocating Pumps (AREA)
- Chairs Characterized By Structure (AREA)
- Safety Valves (AREA)
- Massaging Devices (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB26349/53A GB748374A (en) | 1953-09-24 | 1953-09-24 | Improvements in hydraulic pit props |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE532039A true BE532039A (en:Method) | 1900-01-01 |
Family
ID=10242283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE532039D BE532039A (en:Method) | 1953-09-24 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2713773A (en:Method) |
| BE (1) | BE532039A (en:Method) |
| DE (1) | DE977481C (en:Method) |
| FR (1) | FR1113337A (en:Method) |
| GB (1) | GB748374A (en:Method) |
| NL (2) | NL92057C (en:Method) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE548513A (en:Method) * | 1955-06-10 | |||
| DE1127841B (de) * | 1955-08-13 | 1962-04-19 | Kronprinz Ag | Hydraulischer Grubenstempel |
| BE553228A (en:Method) * | 1955-12-08 | |||
| BE550997A (en:Method) * | 1956-03-07 | |||
| US2975803A (en) * | 1956-04-19 | 1961-03-21 | Blackhawk Mfg Co | Pressure release and relief valve |
| DE1081848B (de) * | 1956-06-28 | 1960-05-19 | Becorit Grubenausbau Gmbh | Hydraulischer Grubenstempel |
| GB894292A (en) * | 1957-07-30 | 1962-04-18 | Mastabar Mining Equip Co Ltd | Improvements in or relating to hydraulic props, particularly pit props |
| NL110999C (en:Method) * | 1958-11-24 | |||
| GB962542A (en) * | 1959-08-21 | 1964-07-01 | Acrow Eng Ltd | Improvements in and relating to hydraulic props |
| GB975826A (en) * | 1961-01-31 | 1964-11-18 | Dowty Mining Equipment Ltd | Improvements relating to fluid flow control valves |
| GB2069048B (en) * | 1980-01-21 | 1984-06-06 | Commercial Shearing | Longwall jacks |
| JP3989023B2 (ja) * | 1996-10-04 | 2007-10-10 | ジョーンズ．チャールズ．ダブリュ | ステレオグラフィックブック |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE553221C (de) * | 1932-06-24 | Matthias Rehse | Kolbentiefpumpe | |
| US947613A (en) * | 1910-01-25 | Bethlehem Steel Corp | Hydraulic jack. | |
| US1047007A (en) * | 1912-02-02 | 1912-12-10 | William J Drugan | Hydraulic jack. |
| US1080062A (en) * | 1912-02-17 | 1913-12-02 | Bethlehem Steel Corp | Pump mechanism for hydraulic jacks and like apparatus. |
| BE486663A (en:Method) * | 1948-01-12 | |||
| GB640414A (en) * | 1948-03-06 | 1950-07-19 | Mavor & Coulson Ltd | Improvements in props |
| DE943391C (de) * | 1951-09-21 | 1956-05-17 | Max Ehmke | Pumpe mit Druckmittelantrieb |
-
0
- NL NL191038D patent/NL191038A/xx unknown
- BE BE532039D patent/BE532039A/xx unknown
- NL NL92057D patent/NL92057C/xx active
-
1953
- 1953-09-24 GB GB26349/53A patent/GB748374A/en not_active Expired
-
1954
- 1954-09-20 US US457097A patent/US2713773A/en not_active Expired - Lifetime
- 1954-09-23 FR FR1113337D patent/FR1113337A/fr not_active Expired
- 1954-09-23 DE DED18717A patent/DE977481C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL191038A (en:Method) | 1900-01-01 |
| US2713773A (en) | 1955-07-26 |
| FR1113337A (fr) | 1956-03-28 |
| GB748374A (en) | 1956-05-02 |
| NL92057C (en:Method) | 1900-01-01 |
| DE977481C (de) | 1966-08-18 |