FR80566E - Improvements to hydraulic props for mines - Google Patents

Improvements to hydraulic props for mines

Info

Publication number
FR80566E
FR80566E FR872553A FR872553A FR80566E FR 80566 E FR80566 E FR 80566E FR 872553 A FR872553 A FR 872553A FR 872553 A FR872553 A FR 872553A FR 80566 E FR80566 E FR 80566E
Authority
FR
France
Prior art keywords
mines
hydraulic props
props
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
FR872553A
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.)
Bochumer Eisenhuette Heintzmann GmbH and Co KG
Original Assignee
Bochumer Eisenhuette Heintzmann GmbH and Co KG
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 Bochumer Eisenhuette Heintzmann GmbH and Co KG filed Critical Bochumer Eisenhuette Heintzmann GmbH and Co KG
Priority to FR872553A priority Critical patent/FR80566E/en
Application granted granted Critical
Publication of FR80566E publication Critical patent/FR80566E/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/14—Telescopic props
    • E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props
FR872553A 1961-09-07 1961-09-07 Improvements to hydraulic props for mines Expired FR80566E (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR872553A FR80566E (en) 1961-09-07 1961-09-07 Improvements to hydraulic props for mines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR872553A FR80566E (en) 1961-09-07 1961-09-07 Improvements to hydraulic props for mines

Publications (1)

Publication Number Publication Date
FR80566E true FR80566E (en) 1963-05-17

Family

ID=8762406

Family Applications (1)

Application Number Title Priority Date Filing Date
FR872553A Expired FR80566E (en) 1961-09-07 1961-09-07 Improvements to hydraulic props for mines

Country Status (1)

Country Link
FR (1) FR80566E (en)

Similar Documents

Publication Publication Date Title
FR1178174A (en) hydraulic mine prop
FR1379611A (en) Improvements to hydraulic installations for ore recovery
FR1277272A (en) Improvements made to mine supports
FR1176882A (en) Improvements to hydraulic mine props
FR1280935A (en) Improvements to hydraulic servo-mechanisms
FR1321725A (en) Improvements to hydraulic props for mines
FR1249070A (en) Improvements to hydraulic props for mines
FR85958E (en) Improvements to hydraulic props for mines
FR1220890A (en) Improvements to breather for mine props
FR1207923A (en) Improvements to hydraulic mine props
FR1174801A (en) hydraulic prop for mines
FR80566E (en) Improvements to hydraulic props for mines
BE602739A (en) Improvements relating to hydraulic props
FR1197629A (en) Improvements to hydraulic props for mines
FR1281058A (en) Improvements to hydraulic props for mines
BE616593A (en) Improvements made to hydraulic props for mines.
FR1340921A (en) Improvements to metal supports for underground structures
FR1247864A (en) Improvements to hydraulic props for mines
FR1187688A (en) Improvements to hydraulic props for mines
FR1302581A (en) Improvements to hydraulic regulators
FR1221309A (en) Improvements to pumps for hydraulic mine props
FR87064E (en) Improvements to hydraulic props for mines
FR1345213A (en) hydraulic prop for mines
FR1359017A (en) hydraulic prop for mines
FR1173246A (en) Improvements to hydraulic props for mines