GB8310412D0 - Hydraulic control devices - Google Patents
Hydraulic control devicesInfo
- Publication number
- GB8310412D0 GB8310412D0 GB838310412A GB8310412A GB8310412D0 GB 8310412 D0 GB8310412 D0 GB 8310412D0 GB 838310412 A GB838310412 A GB 838310412A GB 8310412 A GB8310412 A GB 8310412A GB 8310412 D0 GB8310412 D0 GB 8310412D0
- Authority
- GB
- United Kingdom
- Prior art keywords
- control devices
- hydraulic control
- hydraulic
- devices
- control
- 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.)
- Granted
Links
Classifications
-
- 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
- E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting devices
- E21D23/26—Hydraulic or pneumatic control
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanically-Actuated Valves (AREA)
- Valve Device For Special Equipments (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19823214920 DE3214920A1 (en) | 1982-04-22 | 1982-04-22 | CONTROL VALVE WITH DEAD MAN, IN PARTICULAR FOR THE REMOVAL CONTROL |
Publications (3)
Publication Number | Publication Date |
---|---|
GB8310412D0 true GB8310412D0 (en) | 1983-05-25 |
GB2118689A GB2118689A (en) | 1983-11-02 |
GB2118689B GB2118689B (en) | 1985-07-24 |
Family
ID=6161595
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB08310412A Expired GB2118689B (en) | 1982-04-22 | 1983-04-18 | Improvements in hydraulic control devices for use with mining apparatus |
Country Status (7)
Country | Link |
---|---|
AU (1) | AU554692B2 (en) |
BE (1) | BE896506A (en) |
DE (1) | DE3214920A1 (en) |
ES (1) | ES8402396A1 (en) |
FR (1) | FR2525723B1 (en) |
GB (1) | GB2118689B (en) |
ZA (1) | ZA832626B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3404302C1 (en) * | 1984-02-08 | 1985-06-05 | Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal | Control device for a hydraulic stepping frame |
JPH07103938B2 (en) * | 1990-01-31 | 1995-11-08 | 株式会社コスメック | Check valve with valve opening function |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1548341A (en) * | 1966-07-05 | 1968-12-06 | ||
DE2851937C2 (en) * | 1978-12-01 | 1986-05-28 | Gewerkschaft Eisenhütte Westfalia, 4670 Lünen | Control valve, especially for hydraulic support in mining operations |
-
1982
- 1982-04-22 DE DE19823214920 patent/DE3214920A1/en active Granted
-
1983
- 1983-04-12 AU AU13436/83A patent/AU554692B2/en not_active Ceased
- 1983-04-14 ZA ZA832626A patent/ZA832626B/en unknown
- 1983-04-15 FR FR8306211A patent/FR2525723B1/en not_active Expired
- 1983-04-18 GB GB08310412A patent/GB2118689B/en not_active Expired
- 1983-04-19 BE BE0/210586A patent/BE896506A/en not_active IP Right Cessation
- 1983-04-22 ES ES521766A patent/ES8402396A1/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
AU554692B2 (en) | 1986-08-28 |
GB2118689A (en) | 1983-11-02 |
BE896506A (en) | 1983-08-16 |
ZA832626B (en) | 1983-12-28 |
FR2525723B1 (en) | 1987-04-17 |
GB2118689B (en) | 1985-07-24 |
DE3214920A1 (en) | 1983-10-27 |
FR2525723A1 (en) | 1983-10-28 |
ES521766A0 (en) | 1984-01-16 |
AU1343683A (en) | 1983-10-27 |
DE3214920C2 (en) | 1990-08-30 |
ES8402396A1 (en) | 1984-01-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |