GB8310412D0 - Hydraulic control devices - Google Patents

Hydraulic control devices

Info

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
Application number
GB838310412A
Other versions
GB2118689A (en
GB2118689B (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gewerkschaft Eisenhutte Westfalia GmbH
Original Assignee
Gewerkschaft Eisenhutte Westfalia GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Gewerkschaft Eisenhutte Westfalia GmbH filed Critical Gewerkschaft Eisenhutte Westfalia GmbH
Publication of GB8310412D0 publication Critical patent/GB8310412D0/en
Publication of GB2118689A publication Critical patent/GB2118689A/en
Application granted granted Critical
Publication of GB2118689B publication Critical patent/GB2118689B/en
Expired legal-status Critical Current

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)
GB08310412A 1982-04-22 1983-04-18 Improvements in hydraulic control devices for use with mining apparatus Expired GB2118689B (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

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