FR2056312A5 - - Google Patents

Info

Publication number
FR2056312A5
FR2056312A5 FR7023115A FR7023115A FR2056312A5 FR 2056312 A5 FR2056312 A5 FR 2056312A5 FR 7023115 A FR7023115 A FR 7023115A FR 7023115 A FR7023115 A FR 7023115A FR 2056312 A5 FR2056312 A5 FR 2056312A5
Authority
FR
France
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
FR7023115A
Other languages
French (fr)
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
Application granted granted Critical
Publication of FR2056312A5 publication Critical patent/FR2056312A5/fr
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
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
    • E21C35/08—Guiding the machine
    • E21C35/12—Guiding the machine along a conveyor for the cut material
    • E21C35/14—Equipment for pressing the conveyor towards the working face

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)
  • Fluid-Pressure Circuits (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
FR7023115A 1969-12-18 1970-06-23 Expired FR2056312A5 (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691963353 DE1963353A1 (de) 1969-12-18 1969-12-18 Hubsteuerung eines Rueckzylinders

Publications (1)

Publication Number Publication Date
FR2056312A5 true FR2056312A5 (enrdf_load_stackoverflow) 1971-05-14

Family

ID=5754179

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7023115A Expired FR2056312A5 (enrdf_load_stackoverflow) 1969-12-18 1970-06-23

Country Status (3)

Country Link
DE (1) DE1963353A1 (enrdf_load_stackoverflow)
FR (1) FR2056312A5 (enrdf_load_stackoverflow)
GB (1) GB1303452A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4248136A (en) 1977-08-18 1981-02-03 Charbonnages De France Thrust device using hydraulic jacks
FR2502241A1 (fr) * 1981-03-17 1982-09-24 Gewerk Eisenhuette Westfalia Commande de soutenement hydraulique, et notamment electro-hydraulique pour exploitations minieres souterraines
FR2519397A1 (fr) * 1981-12-31 1983-07-08 Herckelbout Jacques Dispositif d'entrainement intermittent d'un arbre

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4248136A (en) 1977-08-18 1981-02-03 Charbonnages De France Thrust device using hydraulic jacks
FR2502241A1 (fr) * 1981-03-17 1982-09-24 Gewerk Eisenhuette Westfalia Commande de soutenement hydraulique, et notamment electro-hydraulique pour exploitations minieres souterraines
FR2519397A1 (fr) * 1981-12-31 1983-07-08 Herckelbout Jacques Dispositif d'entrainement intermittent d'un arbre

Also Published As

Publication number Publication date
DE1963353A1 (de) 1971-06-24
GB1303452A (enrdf_load_stackoverflow) 1973-01-17

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Legal Events

Date Code Title Description
ST Notification of lapse