FR2100097A5 - - Google Patents

Info

Publication number
FR2100097A5
FR2100097A5 FR7124064A FR7124064A FR2100097A5 FR 2100097 A5 FR2100097 A5 FR 2100097A5 FR 7124064 A FR7124064 A FR 7124064A FR 7124064 A FR7124064 A FR 7124064A FR 2100097 A5 FR2100097 A5 FR 2100097A5
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
FR7124064A
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 FR2100097A5 publication Critical patent/FR2100097A5/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

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)
  • Control Of Presses (AREA)
  • Lining And Supports For Tunnels (AREA)
  • Fluid-Pressure Circuits (AREA)
FR7124064A 1970-08-04 1971-07-01 Expired FR2100097A5 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702038663 DE2038663C3 (de) 1970-08-04 1970-08-04 Hydraulische Steuervorrichtung für rückbare Ausbaueinheiten in Form von Rahmen, Böcken u.dgl.

Publications (1)

Publication Number Publication Date
FR2100097A5 true FR2100097A5 (fr) 1972-03-17

Family

ID=5778823

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7124064A Expired FR2100097A5 (fr) 1970-08-04 1971-07-01

Country Status (3)

Country Link
JP (1) JPS5347323B1 (fr)
DE (1) DE2038663C3 (fr)
FR (1) FR2100097A5 (fr)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1032021A (en) * 1964-01-14 1966-06-08 Dowty Mining Equipment Ltd Advanceable roof support assembly
US3440501A (en) * 1967-02-02 1969-04-22 Gen Electric Double-triggering semiconductor controlled rectifier

Also Published As

Publication number Publication date
DE2038663C3 (de) 1984-05-03
DE2038663A1 (de) 1972-02-10
DE2038663B2 (de) 1978-08-10
JPS5347323B1 (fr) 1978-12-20

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Legal Events

Date Code Title Description
ST Notification of lapse