FR1180410A - Caving valve for hydraulic mine prop - Google Patents

Caving valve for hydraulic mine prop

Info

Publication number
FR1180410A
FR1180410A FR1180410DA FR1180410A FR 1180410 A FR1180410 A FR 1180410A FR 1180410D A FR1180410D A FR 1180410DA FR 1180410 A FR1180410 A FR 1180410A
Authority
FR
France
Prior art keywords
caving
valve
mine prop
hydraulic mine
hydraulic
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
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.)
Gutehoffnungshutte Sterkrade AG
Original Assignee
Gutehoffnungshutte Sterkrade AG
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 Gutehoffnungshutte Sterkrade AG filed Critical Gutehoffnungshutte Sterkrade AG
Application granted granted Critical
Publication of FR1180410A publication Critical patent/FR1180410A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/50—Component parts or details of props
    • E21D15/51—Component parts or details of props specially adapted to hydraulic, pneumatic, or hydraulic-pneumatic props, e.g. arrangements of relief valves
    • E21D15/512—Arrangement of valves

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
FR1180410D 1956-09-29 1957-07-31 Caving valve for hydraulic mine prop Expired FR1180410A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1180410X 1956-09-29

Publications (1)

Publication Number Publication Date
FR1180410A true FR1180410A (en) 1959-06-04

Family

ID=7730178

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1180410D Expired FR1180410A (en) 1956-09-29 1957-07-31 Caving valve for hydraulic mine prop

Country Status (1)

Country Link
FR (1) FR1180410A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3055626A (en) * 1960-04-09 1962-09-25 Mastabar Mining Equip Co Ltd Hydraulic supports

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3055626A (en) * 1960-04-09 1962-09-25 Mastabar Mining Equip Co Ltd Hydraulic supports

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