FR1186287A - hydraulic prop - Google Patents

hydraulic prop

Info

Publication number
FR1186287A
FR1186287A FR1186287DA FR1186287A FR 1186287 A FR1186287 A FR 1186287A FR 1186287D A FR1186287D A FR 1186287DA FR 1186287 A FR1186287 A FR 1186287A
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
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Application granted granted Critical
Publication of FR1186287A publication Critical patent/FR1186287A/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

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)
  • Control Of Presses (AREA)
  • Safety Valves (AREA)
  • Actuator (AREA)
  • Hydraulic Motors (AREA)
FR1186287D 1956-08-25 1957-08-20 hydraulic prop Expired FR1186287A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB41542A DE1048852B (en) 1956-08-25 1956-08-25 Hydraulic support device, in particular pit ram

Publications (1)

Publication Number Publication Date
FR1186287A true FR1186287A (en) 1959-08-19

Family

ID=6966426

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1186287D Expired FR1186287A (en) 1956-08-25 1957-08-20 hydraulic prop

Country Status (4)

Country Link
BE (1) BE560243A (en)
DE (1) DE1048852B (en)
FR (1) FR1186287A (en)
GB (1) GB843354A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE559917A (en) * 1956-10-16
NL277490A (en) * 1961-04-20
GB991009A (en) * 1962-06-07 1965-05-05 Dowty Mining Equipment Ltd Mining apparatus
BE635501A (en) * 1962-07-27 1964-01-27
DE1227410B (en) * 1965-02-13 1966-10-27 Gewerk Eisenhuette Westfalia Valve arrangement for double-acting hydraulic pit rams, especially for stepping expansion units
AT339237B (en) * 1975-09-09 1977-10-10 Voest Ag HYDRAULIC PIT STAMP
JP4262879B2 (en) * 2000-10-10 2009-05-13 カヤバ工業株式会社 Lift cylinder
CN110307021B (en) * 2019-07-29 2024-01-12 石家庄博安煤矿机械制造有限公司 Hydraulic supporting device for coal mine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE510768C (en) * 1928-03-06 1930-10-23 Karl Albert Feeding device for mills where the grist is introduced under pressure
DE926601C (en) * 1950-04-26 1955-04-21 Konrad Grebe Hydraulic pit ram
DE925706C (en) * 1953-06-25 1955-03-28 Steinkohlenbergbauver Hydraulic pit ram

Also Published As

Publication number Publication date
BE560243A (en)
DE1048852B (en) 1959-01-22
GB843354A (en) 1960-08-04

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