FR1201210A - hydraulic mine prop and similar support device - Google Patents

hydraulic mine prop and similar support device

Info

Publication number
FR1201210A
FR1201210A FR1201210DA FR1201210A FR 1201210 A FR1201210 A FR 1201210A FR 1201210D A FR1201210D A FR 1201210DA FR 1201210 A FR1201210 A FR 1201210A
Authority
FR
France
Prior art keywords
support device
similar support
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 FR1201210A publication Critical patent/FR1201210A/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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
    • F16K17/168—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side combined with manually-controlled valves, e.g. a valve combined with a safety valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K24/00—Devices, e.g. valves, for venting or aerating enclosures
    • F16K24/04—Devices, e.g. valves, for venting or aerating enclosures for venting only
    • F16K24/042—Devices, e.g. valves, for venting or aerating enclosures for venting only actuated by a float

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Safety Valves (AREA)
  • Check Valves (AREA)
FR1201210D 1957-08-13 1958-08-08 hydraulic mine prop and similar support device Expired FR1201210A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEG22747A DE1047737B (en) 1957-08-13 1957-08-13 Hydraulic pit ram and similar support device

Publications (1)

Publication Number Publication Date
FR1201210A true FR1201210A (en) 1959-12-29

Family

ID=7122021

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1201210D Expired FR1201210A (en) 1957-08-13 1958-08-08 hydraulic mine prop and similar support device

Country Status (5)

Country Link
BE (1) BE570316A (en)
DE (1) DE1047737B (en)
FR (1) FR1201210A (en)
GB (1) GB892976A (en)
NL (1) NL230401A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4926902A (en) * 1988-01-18 1990-05-22 Diesel Kiki Co., Ltd. Pressure equalizer valve device of fuel injection pump
US10274444B2 (en) 2015-12-30 2019-04-30 Dominique Lestelle Device for resistive measurement of the moisture of a porous mineral material, and application to water monitoring of plants

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL248713A (en) * 1959-02-23
DE1231648B (en) * 1960-08-11 1967-01-05 Bochumer Eisen Heintzmann Hydraulic expansion element, especially for underground mining operations
DE3540531C1 (en) * 1985-11-15 1987-01-08 Hemscheidt Maschf Hermann Shuttle valve for hydraulic step extension

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR965222A (en) * 1947-04-24 1950-09-06

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4926902A (en) * 1988-01-18 1990-05-22 Diesel Kiki Co., Ltd. Pressure equalizer valve device of fuel injection pump
US10274444B2 (en) 2015-12-30 2019-04-30 Dominique Lestelle Device for resistive measurement of the moisture of a porous mineral material, and application to water monitoring of plants

Also Published As

Publication number Publication date
GB892976A (en) 1962-04-04
BE570316A (en)
NL230401A (en)
DE1047737B (en) 1958-12-31

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