FR2056580A6 - - Google Patents

Info

Publication number
FR2056580A6
FR2056580A6 FR7028765A FR7028765A FR2056580A6 FR 2056580 A6 FR2056580 A6 FR 2056580A6 FR 7028765 A FR7028765 A FR 7028765A FR 7028765 A FR7028765 A FR 7028765A FR 2056580 A6 FR2056580 A6 FR 2056580A6
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
FR7028765A
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.)
Bergwerksverband GmbH
Original Assignee
Bergwerksverband 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
Priority claimed from DE19691939990 external-priority patent/DE1939990C/de
Application filed by Bergwerksverband GmbH filed Critical Bergwerksverband GmbH
Application granted granted Critical
Publication of FR2056580A6 publication Critical patent/FR2056580A6/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
    • E21D23/006—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices
    • E21D23/0065—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor provided with essential hydraulic devices driven, or automatically, e.g. electrically-hydraulically controlled

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 Conveyors (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
FR7028765A 1969-08-06 1970-08-04 Expired FR2056580A6 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691939990 DE1939990C (de) 1969-08-06 Selbsttätige Steuerung zum Ausrichten und gegebenenfalls Schwenken eines Strebes im Bergbau

Publications (1)

Publication Number Publication Date
FR2056580A6 true FR2056580A6 (de) 1971-05-14

Family

ID=5742058

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7028765A Expired FR2056580A6 (de) 1969-08-06 1970-08-04

Country Status (3)

Country Link
US (1) US3754129A (de)
FR (1) FR2056580A6 (de)
GB (1) GB1319069A (de)

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3224674A (en) * 1964-05-11 1965-12-21 Raymond W Warren High-speed counters and fluid forward-backward counters
SE337716B (de) * 1964-10-08 1971-08-16 Olivetti & Co Spa
US3319644A (en) * 1965-01-19 1967-05-16 Powers Regulator Co Pneumatic control unit
US3445640A (en) * 1965-01-29 1969-05-20 Davy & United Eng Co Ltd Apparatus for monitoring the position of an object displaceable along a predetermined path
GB1121542A (en) * 1965-03-18 1968-07-31 Gullick Ltd Improvements in or relating to the remote control of supports or chocks in self-advancing mine roof support systems
GB1131854A (en) * 1965-06-18 1968-10-30 Elliott Brothers London Ltd Improvements in and relating to the monitoring of control systems
GB1167614A (en) * 1966-02-17 1969-10-15 Bergwerksverband Gmbh Method and Control System for Adjusting a Pit Prop Axis
CH461116A (de) * 1966-04-12 1968-08-15 Olivetti & Co Spa Digital-Positionsmessvorrichtung
DE1296592B (de) * 1966-10-20 1969-06-04 Bergwerksverband Gmbh Ausbaurahmen
GB1221529A (en) * 1967-02-02 1971-02-03 Bergwerksverband Gmbh Control valve
DE1533720C3 (de) * 1967-05-31 1975-01-02 Bergwerksverband Gmbh, 4300 Essen Einrichtung zum Ausrichten oder zum Schwenken von Streben im Untertagebergbau
US3473546A (en) * 1968-01-02 1969-10-21 Corning Glass Works Up and down binary counter
US3534560A (en) * 1968-01-31 1970-10-20 Bergwerksverband Gmbh Traveling casing systems for mine workings
US3495776A (en) * 1968-05-24 1970-02-17 Bowles Eng Corp Counter-comparator system

Also Published As

Publication number Publication date
US3754129A (en) 1973-08-21
DE1939990A1 (de) 1971-02-18
GB1319069A (en) 1973-05-31

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