JPS4931162B1 - - Google Patents

Info

Publication number
JPS4931162B1
JPS4931162B1 JP44087673A JP8767369A JPS4931162B1 JP S4931162 B1 JPS4931162 B1 JP S4931162B1 JP 44087673 A JP44087673 A JP 44087673A JP 8767369 A JP8767369 A JP 8767369A JP S4931162 B1 JPS4931162 B1 JP S4931162B1
Authority
JP
Japan
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.)
Pending
Application number
JP44087673A
Other languages
Japanese (ja)
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 filed Critical
Publication of JPS4931162B1 publication Critical patent/JPS4931162B1/ja
Pending 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
    • E21D23/0069—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 without essential advancing shifting devices

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)
  • Tents Or Canopies (AREA)
  • Invalid Beds And Related Equipment (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Lining And Supports For Tunnels (AREA)
JP44087673A 1968-11-02 1969-11-04 Pending JPS4931162B1 (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5203468 1968-11-02

Publications (1)

Publication Number Publication Date
JPS4931162B1 true JPS4931162B1 (enrdf_load_stackoverflow) 1974-08-20

Family

ID=10462375

Family Applications (1)

Application Number Title Priority Date Filing Date
JP44087673A Pending JPS4931162B1 (enrdf_load_stackoverflow) 1968-11-02 1969-11-04

Country Status (7)

Country Link
US (1) US3631681A (enrdf_load_stackoverflow)
JP (1) JPS4931162B1 (enrdf_load_stackoverflow)
AT (1) AT293310B (enrdf_load_stackoverflow)
DE (1) DE1954645A1 (enrdf_load_stackoverflow)
ES (1) ES373046A1 (enrdf_load_stackoverflow)
FR (1) FR2022469A1 (enrdf_load_stackoverflow)
GB (1) GB1289299A (enrdf_load_stackoverflow)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL210760A1 (pl) * 1977-12-13 1979-09-24 Bochumer Eisen Heintzmann Uklad rozrzadu zaworowego przy przesuwnej ramownicy obudowy wyrobisk
DE8318615U1 (de) * 1983-06-28 1983-11-03 Klöckner-Becorit GmbH, 4620 Castrop-Rauxel Richtzylinder fuer den schildausbau
US4679856A (en) * 1983-09-21 1987-07-14 Klockner-Becorit Gmbh Mine self-advancing roof support and method of relocating a mine winning face equipped with self-advancing roof support
GB2164987A (en) * 1984-09-26 1986-04-03 Dowty Mining Equipment Ltd Mine roof supports
US5584611A (en) * 1994-11-22 1996-12-17 Long-Airdox Roof support for underground excavations
US6422962B1 (en) * 2000-04-11 2002-07-23 Litens Automotive Partnership Timing belt tensioner with a backstop device with controlled one-way mechanism
WO2004055328A1 (de) * 2002-12-17 2004-07-01 Tiefenbach Bergbautechnik Gmbh Strebausbau in einem bergwerk
CN103557015A (zh) * 2013-08-06 2014-02-05 四川华蓥山广能集团嘉华机械有限责任公司 多伸缩液压支架立柱

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1364412A (fr) * 1963-07-24 1964-06-19 Gewerk Eisenhuette Westfalia Soutènement hydraulique mobile utilisable au fond dans les mines
DE1236451B (de) * 1963-12-21 1967-03-16 Karl Maria Groetschel Dipl Ing Zwischen zwei benachbarte Ausbaueinheiten einsetzbares Leitorgan
GB1079202A (en) * 1964-10-02 1967-08-16 Wild A G & Co Ltd Improvements in or relating to roof support units for mines and the like

Also Published As

Publication number Publication date
ES373046A1 (es) 1971-12-01
AT293310B (de) 1971-10-11
FR2022469A1 (enrdf_load_stackoverflow) 1970-07-31
US3631681A (en) 1972-01-04
GB1289299A (enrdf_load_stackoverflow) 1972-09-13
DE1954645A1 (de) 1970-05-06

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