FR1332192A - - Google Patents

Info

Publication number
FR1332192A
FR1332192A FR1332192DA FR1332192A FR 1332192 A FR1332192 A FR 1332192A FR 1332192D A FR1332192D A FR 1332192DA FR 1332192 A FR1332192 A FR 1332192A
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
Other languages
French (fr)
Publication date
Application granted granted Critical
Publication of FR1332192A publication Critical patent/FR1332192A/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
    • E21D23/0052—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor with advancing shifting devices connected therewith
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00—Caps for supporting mine roofs
    • E21D17/02—Cantilever extension or similar protecting devices
    • E21D17/0206—Hydraulically operated extension devices
    • 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
    • E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
    • E21D23/06—Special mine caps or special tops of pit-props for permitting step-by-step movement

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)
  • Architecture (AREA)
  • Structural Engineering (AREA)
FR1332192D Expired FR1332192A (xx)

Publications (1)

Publication Number Publication Date
FR1332192A true FR1332192A (xx) 1963-12-16

Family

ID=1572584

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1332192D Expired FR1332192A (xx)

Country Status (1)

Country Link
FR (1) FR1332192A (xx)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1243614B (de) * 1965-05-28 1967-07-06 Kloeckner Werke Ag Hangendabstuetzung
US3381480A (en) * 1964-03-10 1968-05-07 Dowty Mining Equipment Ltd Roof supports suitable for use in mines
US4102139A (en) * 1974-05-17 1978-07-25 Fletcher Sutcliffe Wild Limited Mining equipment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3381480A (en) * 1964-03-10 1968-05-07 Dowty Mining Equipment Ltd Roof supports suitable for use in mines
DE1243614B (de) * 1965-05-28 1967-07-06 Kloeckner Werke Ag Hangendabstuetzung
US4102139A (en) * 1974-05-17 1978-07-25 Fletcher Sutcliffe Wild Limited Mining equipment

Similar Documents

Publication Publication Date Title
BE627012A (xx)
BE643555A (xx)
BE644301A (xx)
BE31062A (xx)
BE462764A (xx)
BE465565A (xx)
BE507458A (xx)
BE533484A (xx)
BE547422A (xx)
BE571209A (xx)
BE582314A (xx)
BE603935A (xx)
BE608372A (xx)
BE612803A (xx)
BE614220A (xx)
BE616247A (xx)
BE616830A (xx)
BE616967A (xx)
BE619061A (xx)
BE620325A (xx)
BE621232A (xx)
BE621517A (xx)
BE622160A (xx)
BE623117A (xx)
BE623220A (xx)