FR1371070A - Ensemble de soutènement à signalisation sonore - Google Patents

Ensemble de soutènement à signalisation sonore

Info

Publication number
FR1371070A
FR1371070A FR950145A FR950145A FR1371070A FR 1371070 A FR1371070 A FR 1371070A FR 950145 A FR950145 A FR 950145A FR 950145 A FR950145 A FR 950145A FR 1371070 A FR1371070 A FR 1371070A
Authority
FR
France
Prior art keywords
support system
sound signaling
signaling
sound
support
Prior art date
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
FR950145A
Other languages
English (en)
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.)
Dowty Mining Equipment Ltd
Original Assignee
Dowty Mining Equipment Ltd
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 GB38395/62A external-priority patent/GB993670A/en
Application filed by Dowty Mining Equipment Ltd filed Critical Dowty Mining Equipment Ltd
Priority to FR950145A priority Critical patent/FR1371070A/fr
Application granted granted Critical
Publication of FR1371070A publication Critical patent/FR1371070A/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
    • E21D23/16—Hydraulic or pneumatic features, e.g. circuits, arrangement or adaptation of valves, setting or retracting 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)
FR950145A 1962-10-10 1963-10-10 Ensemble de soutènement à signalisation sonore Expired FR1371070A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR950145A FR1371070A (fr) 1962-10-10 1963-10-10 Ensemble de soutènement à signalisation sonore

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB38395/62A GB993670A (en) 1962-10-10 1962-10-10 Roof support assemblies suitable for use in mines
FR950145A FR1371070A (fr) 1962-10-10 1963-10-10 Ensemble de soutènement à signalisation sonore

Publications (1)

Publication Number Publication Date
FR1371070A true FR1371070A (fr) 1964-08-28

Family

ID=26203812

Family Applications (1)

Application Number Title Priority Date Filing Date
FR950145A Expired FR1371070A (fr) 1962-10-10 1963-10-10 Ensemble de soutènement à signalisation sonore

Country Status (1)

Country Link
FR (1) FR1371070A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1296108B (de) * 1965-02-13 1969-05-29 Gullick Ltd Fernsteuervorrichtung fuer einen wandernden Strebausbau in untertaegigen Grubenbetrieben

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1296108B (de) * 1965-02-13 1969-05-29 Gullick Ltd Fernsteuervorrichtung fuer einen wandernden Strebausbau in untertaegigen Grubenbetrieben

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