FR1178174A - hydraulic mine prop - Google Patents

hydraulic mine prop

Info

Publication number
FR1178174A
FR1178174A FR1178174DA FR1178174A FR 1178174 A FR1178174 A FR 1178174A FR 1178174D A FR1178174D A FR 1178174DA FR 1178174 A FR1178174 A FR 1178174A
Authority
FR
France
Prior art keywords
mine prop
hydraulic mine
hydraulic
prop
mine
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 FR1178174A publication Critical patent/FR1178174A/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
    • E21D15/60—Devices for withdrawing props or chocks
    • E21D15/603—Devices for withdrawing props or chocks by means of hydraulic devices
    • 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)
  • Safety Valves (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Prostheses (AREA)
  • Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
  • Fluid-Pressure Circuits (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
FR1178174D 1956-07-05 1957-07-04 hydraulic mine prop Expired FR1178174A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEG20647A DE1017118B (en) 1956-07-05 1956-07-05 Robbery valve for hydraulic pit rams
DEG20019A DE1010932B (en) 1956-07-05 1956-07-05 Hydraulic pit ram

Publications (1)

Publication Number Publication Date
FR1178174A true FR1178174A (en) 1959-05-05

Family

ID=25978072

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1178174D Expired FR1178174A (en) 1956-07-05 1957-07-04 hydraulic mine prop

Country Status (4)

Country Link
BE (2) BE558743A (en)
DE (2) DE1010932B (en)
FR (1) FR1178174A (en)
GB (2) GB864032A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB894292A (en) * 1957-07-30 1962-04-18 Mastabar Mining Equip Co Ltd Improvements in or relating to hydraulic props, particularly pit props
GB877624A (en) * 1958-07-31 1961-09-20 Dowty Mining Equipment Ltd Improvements in release valves for hydraulic props
DE1193458B (en) * 1958-08-11 1965-05-26 Dobson Ltd W E & F Wandering pit support
DE1168849B (en) * 1958-10-30 1964-04-30 Wilhelm Steinkopf Hydraulic pit ram
GB962542A (en) * 1959-08-21 1964-07-01 Acrow Eng Ltd Improvements in and relating to hydraulic props
DE1149318B (en) * 1960-08-05 1963-05-30 H Joe Rheinbay Dipl Ing Hydraulically operated pit ram
SE431159B (en) * 1980-05-05 1984-01-23 Hans Arne Valentin Johansson LIFTING DEVICE FOR PATIENT LIFTING DEVICES
US4776561A (en) * 1986-12-05 1988-10-11 The Stanley Works Trigger control for air tool handle
DE102009009182A1 (en) 2009-02-16 2010-08-19 Süd-Chemie AG Zinc oxide crystal particles and methods of preparation
CN102844523B (en) 2010-02-19 2014-09-24 科学与工业研究会 A device for roof support of underground mine/tunnel

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE922525C (en) * 1952-04-26 1955-01-17 Eisenwerk Wanheim G M B H Hydraulic pit ram

Also Published As

Publication number Publication date
BE558743A (en)
DE1017118B (en) 1957-10-10
GB864032A (en) 1961-03-29
BE559146A (en)
DE1010932B (en) 1957-06-27
GB876396A (en) 1961-08-30

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