DE59103043D1 - MULTI-STAGE HYDRAULIC PITCH STAMP. - Google Patents

MULTI-STAGE HYDRAULIC PITCH STAMP.

Info

Publication number
DE59103043D1
DE59103043D1 DE59103043T DE59103043T DE59103043D1 DE 59103043 D1 DE59103043 D1 DE 59103043D1 DE 59103043 T DE59103043 T DE 59103043T DE 59103043 T DE59103043 T DE 59103043T DE 59103043 D1 DE59103043 D1 DE 59103043D1
Authority
DE
Germany
Prior art keywords
stamp
stage hydraulic
hydraulic pitch
pitch
stage
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.)
Revoked
Application number
DE59103043T
Other languages
German (de)
Inventor
Joern Schaefertoens
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.)
NLW FOERDERTECHNIK GmbH
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=DE59103043(D1) "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
Application granted granted Critical
Publication of DE59103043D1 publication Critical patent/DE59103043D1/en
Anticipated expiration legal-status Critical
Revoked 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)
  • Earth Drilling (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Actuator (AREA)
DE59103043T 1990-07-24 1991-03-12 MULTI-STAGE HYDRAULIC PITCH STAMP. Revoked DE59103043D1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4023451 1990-07-24
PCT/EP1991/000459 WO1992001858A1 (en) 1990-07-24 1991-03-12 Multi-height hydraulic pit prop

Publications (1)

Publication Number Publication Date
DE59103043D1 true DE59103043D1 (en) 1994-10-27

Family

ID=6410890

Family Applications (2)

Application Number Title Priority Date Filing Date
DE9116604U Expired - Lifetime DE9116604U1 (en) 1990-07-24 1991-03-12 Multi-stage hydraulic pit prop
DE59103043T Revoked DE59103043D1 (en) 1990-07-24 1991-03-12 MULTI-STAGE HYDRAULIC PITCH STAMP.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE9116604U Expired - Lifetime DE9116604U1 (en) 1990-07-24 1991-03-12 Multi-stage hydraulic pit prop

Country Status (4)

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

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19647943C1 (en) * 1996-11-20 1998-06-18 Dbt Gmbh Hydraulic double telescopic stamp
CN101105133B (en) * 2007-07-27 2010-05-19 中国矿业大学 Double extension suspended type hydraulic vertical prop

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1050524A (en) *
DE1098889B (en) * 1958-02-20 1961-02-09 Bwg Bergwerk U Walzwerk Maschb Bottom lock for the working cylinder of hydraulic pit ram
GB1093778A (en) * 1965-08-17 1967-12-06 Dowty Mining Equipment Ltd Fluid-pressure-operated prop
DE2403852C3 (en) * 1974-01-28 1981-01-08 Gewerkschaft Eisenhuette Westfalia, 4670 Luenen Hydraulic telescopic ram for pit lining
DE3421002A1 (en) * 1984-06-06 1985-12-12 GAG Grubenausbau GmbH, 5840 Schwerte Hydraulic prop of modular design
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
PL294208A1 (en) 1993-02-08
EP0491882B1 (en) 1994-09-21
EP0491882A1 (en) 1992-07-01
DE9116604U1 (en) 1993-03-11
WO1992001858A1 (en) 1992-02-06

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Legal Events

Date Code Title Description
8363 Opposition against the patent
8331 Complete revocation