FR1280684A - hydraulic prop - Google Patents

hydraulic prop

Info

Publication number
FR1280684A
FR1280684A FR844641A FR844641A FR1280684A FR 1280684 A FR1280684 A FR 1280684A FR 844641 A FR844641 A FR 844641A FR 844641 A FR844641 A FR 844641A FR 1280684 A FR1280684 A FR 1280684A
Authority
FR
France
Prior art keywords
hydraulic prop
prop
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
FR844641A
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.)
Sagem SA
Original Assignee
Sagem SA
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 Sagem SA filed Critical Sagem SA
Priority to FR844641A priority Critical patent/FR1280684A/en
Priority to DES76107A priority patent/DE1199218B/en
Priority to GB4068261A priority patent/GB981619A/en
Priority to BE610401A priority patent/BE610401A/en
Application granted granted Critical
Publication of FR1280684A publication Critical patent/FR1280684A/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
    • E21D15/58—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)
  • Safety Valves (AREA)
  • Mechanically-Actuated Valves (AREA)
FR844641A 1960-11-22 1960-11-22 hydraulic prop Expired FR1280684A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR844641A FR1280684A (en) 1960-11-22 1960-11-22 hydraulic prop
DES76107A DE1199218B (en) 1960-11-22 1961-09-30 Hydraulic pit ram
GB4068261A GB981619A (en) 1960-11-22 1961-11-14 Hydraulic prop
BE610401A BE610401A (en) 1960-11-22 1961-11-16 Hydraulic prop

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR844641A FR1280684A (en) 1960-11-22 1960-11-22 hydraulic prop

Publications (1)

Publication Number Publication Date
FR1280684A true FR1280684A (en) 1962-01-08

Family

ID=8743198

Family Applications (1)

Application Number Title Priority Date Filing Date
FR844641A Expired FR1280684A (en) 1960-11-22 1960-11-22 hydraulic prop

Country Status (4)

Country Link
BE (1) BE610401A (en)
DE (1) DE1199218B (en)
FR (1) FR1280684A (en)
GB (1) GB981619A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1243610B (en) * 1964-07-09 1967-07-06 Hermann Schwarz Kommanditgesel Pressure-operated pit stamp

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2069048B (en) * 1980-01-21 1984-06-06 Commercial Shearing Longwall jacks

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1685697A (en) * 1926-07-30 1928-09-25 Nathan M Guinsburg Jack
BE486663A (en) * 1948-01-12
DE809903C (en) * 1948-08-25 1951-08-02 Mavor & Coulson Ltd Hydraulic ram for mining operations
DE924142C (en) * 1951-04-08 1955-02-28 Ringfeder Gmbh Pit stamp
DE919525C (en) * 1951-05-01 1954-10-25 Gullick Ltd Hydraulic pit ram
GB700790A (en) * 1951-07-19 1953-12-09 Dowty Auto Units Ltd Improvements relating to valves
GB767561A (en) * 1952-07-15 1957-02-06 Gullick Ltd Improvements in or relating to mining chocks and the like
BE526791A (en) * 1953-02-25
DE1062654B (en) * 1956-04-03 1959-08-06 Kloeckner Bergbau Viktor Icker Hydraulic pit ram
GB891624A (en) * 1958-01-02 1962-03-14 Dowty Mining Equipment Ltd Valves suitable for use as air breather valves in pit props

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1243610B (en) * 1964-07-09 1967-07-06 Hermann Schwarz Kommanditgesel Pressure-operated pit stamp

Also Published As

Publication number Publication date
GB981619A (en) 1965-01-27
BE610401A (en) 1962-03-16
DE1199218B (en) 1965-08-26

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