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FR1006760A - hydraulic prop without individual pump - Google Patents

hydraulic prop without individual pump

Info

Publication number
FR1006760A
FR1006760A FR1006760DA FR1006760A FR 1006760 A FR1006760 A FR 1006760A FR 1006760D A FR1006760D A FR 1006760DA FR 1006760 A FR1006760 A FR 1006760A
Authority
FR
France
Prior art keywords
hydraulic prop
individual pump
pump
individual
prop
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)
Inventor
Rene Gravelais
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 filed Critical
Application granted granted Critical
Publication of FR1006760A publication Critical patent/FR1006760A/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
    • E21D15/517—Extension elements
    • 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
    • E21D15/15—Means counteracting entry of dirt; Built-in cleaning 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
    • E21D15/14—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
    • E21D15/51—Component parts or details of props specially adapted to hydraulic, pneumatic, or hydraulic-pneumatic props, e.g. arrangements of relief valves
    • E21D15/515—Particular fluids not covered by any chemical subdivision
    • 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
    • E21D15/58—Devices for setting props or chocks
    • E21D15/585—Devices for setting props or chocks by means of hydraulically operated devices for mechanical props, or hydraulic props in which the hydraulic part is not important
    • E21D15/586—Devices for setting props or chocks by means of hydraulically operated devices for mechanical props, or hydraulic props in which the hydraulic part is not important the props being pre-loaded

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)
FR1006760D 1949-10-15 1949-10-15 hydraulic prop without individual pump Expired FR1006760A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1006760T 1949-10-15

Publications (1)

Publication Number Publication Date
FR1006760A true FR1006760A (en) 1952-04-28

Family

ID=9566046

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1006760D Expired FR1006760A (en) 1949-10-15 1949-10-15 hydraulic prop without individual pump

Country Status (1)

Country Link
FR (1) FR1006760A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1035600B (en) * 1956-04-09 1958-08-07 Hemscheidt Maschf Hermann Extension for a hydraulic extension temple
DE1037991B (en) * 1956-05-01 1958-09-04 Dowty Mining Equipment Ltd Hydraulic pit ram
DE1103270B (en) * 1957-04-09 1961-03-30 Kloeckner Werke Ag Pressure gauge for hydraulic pit rams
US3028142A (en) * 1959-01-19 1962-04-03 Modern Hydraulics Inc Quick-acting hydraulic jack
DE1129439B (en) * 1957-07-20 1962-05-17 Hermann Schwarz K G Flexible support body for the pit construction
DE1141248B (en) * 1958-02-22 1962-12-20 Dowty Mining Equipment Ltd Hydraulically operated pit ram
US3072994A (en) * 1955-06-06 1963-01-15 Alan E Brickman Apparatus for making post-stressed reinforced cement-concrete structures
US3115332A (en) * 1960-07-27 1963-12-24 Diamond Power Speciality Stud tensioner drawbar connector
DE1164957B (en) * 1960-01-27 1964-03-12 Dobson Ltd W E & F Hydraulically adjustable extension ram
FR2503688A1 (en) * 1981-04-10 1982-10-15 Gewerk Eisenhuette Westfalia HYDRAULIC PRESSER CYLINDER FOR PRESSURE RIPAGE OF TUBES AND THE LIKE

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3072994A (en) * 1955-06-06 1963-01-15 Alan E Brickman Apparatus for making post-stressed reinforced cement-concrete structures
DE1035600B (en) * 1956-04-09 1958-08-07 Hemscheidt Maschf Hermann Extension for a hydraulic extension temple
DE1037991B (en) * 1956-05-01 1958-09-04 Dowty Mining Equipment Ltd Hydraulic pit ram
DE1103270B (en) * 1957-04-09 1961-03-30 Kloeckner Werke Ag Pressure gauge for hydraulic pit rams
DE1129439B (en) * 1957-07-20 1962-05-17 Hermann Schwarz K G Flexible support body for the pit construction
DE1141248B (en) * 1958-02-22 1962-12-20 Dowty Mining Equipment Ltd Hydraulically operated pit ram
US3028142A (en) * 1959-01-19 1962-04-03 Modern Hydraulics Inc Quick-acting hydraulic jack
DE1164957B (en) * 1960-01-27 1964-03-12 Dobson Ltd W E & F Hydraulically adjustable extension ram
US3115332A (en) * 1960-07-27 1963-12-24 Diamond Power Speciality Stud tensioner drawbar connector
FR2503688A1 (en) * 1981-04-10 1982-10-15 Gewerk Eisenhuette Westfalia HYDRAULIC PRESSER CYLINDER FOR PRESSURE RIPAGE OF TUBES AND THE LIKE

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