FR1189395A - Jambe de force hydraulique de longueur variable, par exemple poinçon hydraulique de mine - Google Patents

Jambe de force hydraulique de longueur variable, par exemple poinçon hydraulique de mine

Info

Publication number
FR1189395A
FR1189395A FR1189395DA FR1189395A FR 1189395 A FR1189395 A FR 1189395A FR 1189395D A FR1189395D A FR 1189395DA FR 1189395 A FR1189395 A FR 1189395A
Authority
FR
France
Prior art keywords
hydraulic
punch
variable length
mine
strut
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
English (en)
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.)
Salzgitter Maschinen AG
Original Assignee
Salzgitter Maschinen 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 Salzgitter Maschinen AG filed Critical Salzgitter Maschinen AG
Application granted granted Critical
Publication of FR1189395A publication Critical patent/FR1189395A/fr
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
    • E21D15/45—Hydraulic, pneumatic, or hydraulic-pneumatic props having closed fluid system, e.g. with built-in pumps or accumulators
    • 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)
  • Fluid-Pressure Circuits (AREA)
  • Reciprocating Pumps (AREA)
  • Actuator (AREA)
FR1189395D 1957-01-23 1957-12-31 Jambe de force hydraulique de longueur variable, par exemple poinçon hydraulique de mine Expired FR1189395A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE860390X 1957-01-23

Publications (1)

Publication Number Publication Date
FR1189395A true FR1189395A (fr) 1959-10-02

Family

ID=6791665

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1189395D Expired FR1189395A (fr) 1957-01-23 1957-12-31 Jambe de force hydraulique de longueur variable, par exemple poinçon hydraulique de mine

Country Status (2)

Country Link
FR (1) FR1189395A (fr)
GB (1) GB860390A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995034743A1 (fr) * 1994-06-13 1995-12-21 Contitech Luftfedersysteme Gmbh Etançon

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995034743A1 (fr) * 1994-06-13 1995-12-21 Contitech Luftfedersysteme Gmbh Etançon

Also Published As

Publication number Publication date
GB860390A (en) 1961-02-01

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