PL294208A1 - - Google Patents

Info

Publication number
PL294208A1
PL294208A1 PL29420891A PL29420891A PL294208A1 PL 294208 A1 PL294208 A1 PL 294208A1 PL 29420891 A PL29420891 A PL 29420891A PL 29420891 A PL29420891 A PL 29420891A PL 294208 A1 PL294208 A1 PL 294208A1
Authority
PL
Poland
Application number
PL29420891A
Inventor
Joern Henrich Schaefertoens
Original Assignee
Nlw Foerdertechnik 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6410890&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=PL294208(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Nlw Foerdertechnik Gmbh filed Critical Nlw Foerdertechnik Gmbh
Publication of PL294208A1 publication Critical patent/PL294208A1/xx

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)
  • Earth Drilling (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Actuator (AREA)
PL29420891A 1990-07-24 1991-03-12 PL294208A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4023451 1990-07-24

Publications (1)

Publication Number Publication Date
PL294208A1 true PL294208A1 (de) 1993-02-08

Family

ID=6410890

Family Applications (1)

Application Number Title Priority Date Filing Date
PL29420891A PL294208A1 (de) 1990-07-24 1991-03-12

Country Status (4)

Country Link
EP (1) EP0491882B1 (de)
DE (2) DE9116604U1 (de)
PL (1) PL294208A1 (de)
WO (1) WO1992001858A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19647943C1 (de) * 1996-11-20 1998-06-18 Dbt Gmbh Hydraulischer Doppelteleskopstempel
CN101105133B (zh) * 2007-07-27 2010-05-19 中国矿业大学 双伸缩悬浮式液压立柱

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1050524A (de) *
DE1098889B (de) * 1958-02-20 1961-02-09 Bwg Bergwerk U Walzwerk Maschb Bodenverschluss fuer den Arbeitszylinder hydraulischer Grubenstempel
GB1093778A (en) * 1965-08-17 1967-12-06 Dowty Mining Equipment Ltd Fluid-pressure-operated prop
DE2403852C3 (de) * 1974-01-28 1981-01-08 Gewerkschaft Eisenhuette Westfalia, 4670 Luenen Hydraulischer Teleskopstempel für den Grubenausbau
DE3421002A1 (de) * 1984-06-06 1985-12-12 GAG Grubenausbau GmbH, 5840 Schwerte Hydraulischer stempel in modulbauweise
DE3904644C1 (en) * 1989-02-16 1990-03-29 Hermann Hemscheidt Maschinenfabrik Gmbh & Co, 5600 Wuppertal, De Hydraulic pit prop

Also Published As

Publication number Publication date
EP0491882B1 (de) 1994-09-21
EP0491882A1 (de) 1992-07-01
DE59103043D1 (de) 1994-10-27
DE9116604U1 (de) 1993-03-11
WO1992001858A1 (de) 1992-02-06

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