FR2157198A5 - - Google Patents

Info

Publication number
FR2157198A5
FR2157198A5 FR7137930A FR7137930A FR2157198A5 FR 2157198 A5 FR2157198 A5 FR 2157198A5 FR 7137930 A FR7137930 A FR 7137930A FR 7137930 A FR7137930 A FR 7137930A FR 2157198 A5 FR2157198 A5 FR 2157198A5
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
FR7137930A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7137930A priority Critical patent/FR2157198A5/fr
Application granted granted Critical
Publication of FR2157198A5 publication Critical patent/FR2157198A5/fr
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D19/00—Provisional protective covers for working space
    • E21D19/02—Provisional protective covers for working space for use in longwall working
    • 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
    • E21D23/0454—Trailing plates; Coal face or goaf side sprags

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)
FR7137930A 1971-10-21 1971-10-21 Expired FR2157198A5 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7137930A FR2157198A5 (fr) 1971-10-21 1971-10-21

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7137930A FR2157198A5 (fr) 1971-10-21 1971-10-21

Publications (1)

Publication Number Publication Date
FR2157198A5 true FR2157198A5 (fr) 1973-06-01

Family

ID=9084729

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7137930A Expired FR2157198A5 (fr) 1971-10-21 1971-10-21

Country Status (1)

Country Link
FR (1) FR2157198A5 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2523207A1 (fr) * 1982-04-29 1983-09-16 Bergwerksverband Gmbh Dispositif pour la compression de remblais

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2523207A1 (fr) * 1982-04-29 1983-09-16 Bergwerksverband Gmbh Dispositif pour la compression de remblais

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Legal Events

Date Code Title Description
ST Notification of lapse