FR2170295A5 - - Google Patents

Info

Publication number
FR2170295A5
FR2170295A5 FR7141340A FR7141340A FR2170295A5 FR 2170295 A5 FR2170295 A5 FR 2170295A5 FR 7141340 A FR7141340 A FR 7141340A FR 7141340 A FR7141340 A FR 7141340A FR 2170295 A5 FR2170295 A5 FR 2170295A5
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
FR7141340A
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.)
ALACCHI GEORGES FR
Original Assignee
ALACCHI GEORGES FR
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 ALACCHI GEORGES FR filed Critical ALACCHI GEORGES FR
Priority to FR7141340A priority Critical patent/FR2170295A5/fr
Priority to ES408428A priority patent/ES408428A1/es
Priority to DE19722255908 priority patent/DE2255908A1/de
Application granted granted Critical
Publication of FR2170295A5 publication Critical patent/FR2170295A5/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
    • E21D23/0004—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor along the working face
    • E21D23/0017—Pile type supports
    • E21D23/0021—Pile type supports comprising two walking elements
    • 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
    • E21D23/0082—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor specially adapted for vertical or steep gradient seams
    • 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
    • E21D23/08—Advancing mechanisms
    • E21D23/081—Advancing mechanisms forming parts of the roof supports
    • E21D23/082—Advancing mechanisms forming parts of the roof supports acting solely on the elements of the supports

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)
  • Revetment (AREA)
  • Lining And Supports For Tunnels (AREA)
FR7141340A 1971-11-18 1971-11-18 Expired FR2170295A5 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR7141340A FR2170295A5 (de) 1971-11-18 1971-11-18
ES408428A ES408428A1 (es) 1971-11-18 1972-11-09 Entibacion desplazable, en particular para yacimiento con pendiente inclinada.
DE19722255908 DE2255908A1 (de) 1971-11-18 1972-11-15 Schreitausbau

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7141340A FR2170295A5 (de) 1971-11-18 1971-11-18

Publications (1)

Publication Number Publication Date
FR2170295A5 true FR2170295A5 (de) 1973-09-14

Family

ID=9085986

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7141340A Expired FR2170295A5 (de) 1971-11-18 1971-11-18

Country Status (3)

Country Link
DE (1) DE2255908A1 (de)
ES (1) ES408428A1 (de)
FR (1) FR2170295A5 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0014188A1 (de) * 1979-01-23 1980-08-06 VOEST-ALPINE Aktiengesellschaft Ausbaubock

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0014188A1 (de) * 1979-01-23 1980-08-06 VOEST-ALPINE Aktiengesellschaft Ausbaubock

Also Published As

Publication number Publication date
ES408428A1 (es) 1975-11-16
DE2255908A1 (de) 1973-06-14

Similar Documents

Publication Publication Date Title
ATA136472A (de)
AU2658571A (de)
AU2691671A (de)
FR2170295A5 (de)
AU2894671A (de)
AU2726271A (de)
AU2485671A (de)
AU2941471A (de)
AU2952271A (de)
AU2564071A (de)
AU3005371A (de)
AU2684071A (de)
AU3025871A (de)
AR202997Q (de)
AU2654071A (de)
AU2836771A (de)
AU2837671A (de)
AU2854371A (de)
AU2875571A (de)
AU2588771A (de)
AU2880771A (de)
AU3038671A (de)
AU2577671A (de)
AU2755871A (de)
AR199640Q (de)

Legal Events

Date Code Title Description
ST Notification of lapse