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FR1187688A - Improvements to hydraulic props for mines - Google Patents

Improvements to hydraulic props for mines

Info

Publication number
FR1187688A
FR1187688A FR1187688DA FR1187688A FR 1187688 A FR1187688 A FR 1187688A FR 1187688D A FR1187688D A FR 1187688DA FR 1187688 A FR1187688 A FR 1187688A
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
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.)
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 GB1341856A external-priority patent/GB815578A/en
Application filed by Dowty Mining Equipment Ltd filed Critical Dowty Mining Equipment Ltd
Application granted granted Critical
Publication of FR1187688A publication Critical patent/FR1187688A/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
    • 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
    • E21D15/54—Details of the ends of props
    • E21D15/55—Details of the ends of props of prop heads or feet

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)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
FR1187688D 1956-05-01 1957-04-30 Improvements to hydraulic props for mines Expired FR1187688A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1341856A GB815578A (en) 1956-05-01 Improvements in hydraulic pit props

Publications (1)

Publication Number Publication Date
FR1187688A true FR1187688A (en) 1959-09-15

Family

ID=10022603

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1187688D Expired FR1187688A (en) 1956-05-01 1957-04-30 Improvements to hydraulic props for mines

Country Status (3)

Country Link
BE (1) BE557125A (en)
DE (1) DE1037991B (en)
FR (1) FR1187688A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2161137B (en) * 1984-07-02 1989-04-19 Yann Tay Enterprises Co Ltd A pump lever for a jack

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE800392C (en) * 1949-04-08 1950-11-02 Gewerk Eisenhuette Westfalia Hydraulic pit ram
FR1006760A (en) * 1949-10-15 1952-04-28 hydraulic prop without individual pump

Also Published As

Publication number Publication date
BE557125A (en)
DE1037991B (en) 1958-09-04

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