FR1364512A - hydraulic prop forming a safety device usable in particular in anchoring systems - Google Patents

hydraulic prop forming a safety device usable in particular in anchoring systems

Info

Publication number
FR1364512A
FR1364512A FR942771A FR942771A FR1364512A FR 1364512 A FR1364512 A FR 1364512A FR 942771 A FR942771 A FR 942771A FR 942771 A FR942771 A FR 942771A FR 1364512 A FR1364512 A FR 1364512A
Authority
FR
France
Prior art keywords
safety device
hydraulic prop
device usable
anchoring systems
prop forming
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
FR942771A
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.)
Gewerkschaft Eisenhutte Westfalia GmbH
Original Assignee
Gewerkschaft Eisenhutte Westfalia GmbH
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 Gewerkschaft Eisenhutte Westfalia GmbH filed Critical Gewerkschaft Eisenhutte Westfalia GmbH
Application granted granted Critical
Publication of FR1364512A publication Critical patent/FR1364512A/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
    • E21D15/14—Telescopic props
    • E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props

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)
  • Reciprocating Pumps (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
FR942771A 1962-07-27 1963-07-26 hydraulic prop forming a safety device usable in particular in anchoring systems Expired FR1364512A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEG35569A DE1193460B (en) 1962-07-27 1962-07-27 Hydraulic pit ram

Publications (1)

Publication Number Publication Date
FR1364512A true FR1364512A (en) 1964-06-19

Family

ID=40996482

Family Applications (1)

Application Number Title Priority Date Filing Date
FR942771A Expired FR1364512A (en) 1962-07-27 1963-07-26 hydraulic prop forming a safety device usable in particular in anchoring systems

Country Status (4)

Country Link
BE (1) BE635501A (en)
DE (1) DE1193460B (en)
FR (1) FR1364512A (en)
GB (1) GB1052405A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4075931A (en) * 1975-10-09 1978-02-28 Caldwell Melvin R Lift-jack fluid motor for hydraulic lift trucks

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE547272A (en) * 1955-04-25
GB774470A (en) * 1955-11-19 1957-05-08 Becorit Grubenausbau Gmbh Improvements relating to hydraulic pit-props
BE558508A (en) * 1956-06-21
BE560243A (en) * 1956-08-25

Also Published As

Publication number Publication date
GB1052405A (en) 1966-12-21
DE1193460B (en) 1965-05-26
BE635501A (en) 1964-01-27

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