ES8402396A1 - Perfeccionamientos en una valvula de maniobra especialmente para el control de entibaciones. - Google Patents

Perfeccionamientos en una valvula de maniobra especialmente para el control de entibaciones.

Info

Publication number
ES8402396A1
ES8402396A1 ES521766A ES521766A ES8402396A1 ES 8402396 A1 ES8402396 A1 ES 8402396A1 ES 521766 A ES521766 A ES 521766A ES 521766 A ES521766 A ES 521766A ES 8402396 A1 ES8402396 A1 ES 8402396A1
Authority
ES
Spain
Prior art keywords
hydraulic control
mining apparatus
cam shaft
control devices
cam
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.)
Expired
Application number
ES521766A
Other languages
English (en)
Spanish (es)
Other versions
ES521766A0 (es
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 ES521766A0 publication Critical patent/ES521766A0/es
Publication of ES8402396A1 publication Critical patent/ES8402396A1/es
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)
ES521766A 1982-04-22 1983-04-22 Perfeccionamientos en una valvula de maniobra especialmente para el control de entibaciones. Expired ES8402396A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19823214920 DE3214920A1 (de) 1982-04-22 1982-04-22 Steuerventil mit totmannschaltung, insbesondere fuer die ausbausteuerung

Publications (2)

Publication Number Publication Date
ES521766A0 ES521766A0 (es) 1984-01-16
ES8402396A1 true ES8402396A1 (es) 1984-01-16

Family

ID=6161595

Family Applications (1)

Application Number Title Priority Date Filing Date
ES521766A Expired ES8402396A1 (es) 1982-04-22 1983-04-22 Perfeccionamientos en una valvula de maniobra especialmente para el control de entibaciones.

Country Status (7)

Country Link
AU (1) AU554692B2 (OSRAM)
BE (1) BE896506A (OSRAM)
DE (1) DE3214920A1 (OSRAM)
ES (1) ES8402396A1 (OSRAM)
FR (1) FR2525723B1 (OSRAM)
GB (1) GB2118689B (OSRAM)
ZA (1) ZA832626B (OSRAM)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3404302C1 (de) * 1984-02-08 1985-06-05 Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal Steuervorrichtung fuer ein hydraulisches Schreitausbaugestell
JPH07103938B2 (ja) * 1990-01-31 1995-11-08 株式会社コスメック 開弁機能付き逆止弁

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1137337A (en) * 1966-07-05 1968-12-18 Gewerk Eisenhuette Westfalia Improvements in or relating to apparatus for controlling the distribution of hydraulic liquid
DE2851937C2 (de) * 1978-12-01 1986-05-28 Gewerkschaft Eisenhütte Westfalia, 4670 Lünen Steuerventil, insbesondere für einen hydraulischen Schreitausbau in Bergbaubetrieben

Also Published As

Publication number Publication date
DE3214920C2 (OSRAM) 1990-08-30
ES521766A0 (es) 1984-01-16
AU1343683A (en) 1983-10-27
GB2118689B (en) 1985-07-24
FR2525723B1 (fr) 1987-04-17
AU554692B2 (en) 1986-08-28
GB2118689A (en) 1983-11-02
FR2525723A1 (fr) 1983-10-28
DE3214920A1 (de) 1983-10-27
BE896506A (fr) 1983-08-16
ZA832626B (en) 1983-12-28
GB8310412D0 (en) 1983-05-25

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 20010402