RO60607A - - Google Patents

Info

Publication number
RO60607A
RO60607A RO7236272A RO7236272A RO60607A RO 60607 A RO60607 A RO 60607A RO 7236272 A RO7236272 A RO 7236272A RO 7236272 A RO7236272 A RO 7236272A RO 60607 A RO60607 A RO 60607A
Authority
RO
Romania
Application number
RO7236272A
Other languages
Romanian (ro)
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 filed Critical
Publication of RO60607A publication Critical patent/RO60607A/ro

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/04—Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor
    • E21D23/06—Special mine caps or special tops of pit-props for permitting step-by-step movement
    • E21D23/063—Retractable cantilever extensions therefor
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D17/00—Caps for supporting mine roofs
    • E21D17/02—Cantilever extension or similar protecting devices
    • E21D17/08—Cap joints for obtaining a coal-face free of pit-props
    • E21D17/082—Cap joints for obtaining a coal-face free of pit-props of sliding type

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Lining And Supports For Tunnels (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
RO7236272A 1971-09-28 1972-09-28 RO60607A (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HUBA002649 HU176912B (hu) 1971-09-28 1971-09-28 Peredvizhnoj mekhanizm kreplenija hhita

Publications (1)

Publication Number Publication Date
RO60607A true RO60607A (enrdf_load_stackoverflow) 1976-10-15

Family

ID=10993334

Family Applications (1)

Application Number Title Priority Date Filing Date
RO7236272A RO60607A (enrdf_load_stackoverflow) 1971-09-28 1972-09-28

Country Status (11)

Country Link
JP (1) JPS565920B2 (enrdf_load_stackoverflow)
AT (1) AT320565B (enrdf_load_stackoverflow)
BE (1) BE789315A (enrdf_load_stackoverflow)
CS (1) CS157005B2 (enrdf_load_stackoverflow)
DE (2) DE2244911C3 (enrdf_load_stackoverflow)
ES (1) ES407051A1 (enrdf_load_stackoverflow)
GB (1) GB1381198A (enrdf_load_stackoverflow)
HU (1) HU176912B (enrdf_load_stackoverflow)
PL (1) PL78410B1 (enrdf_load_stackoverflow)
RO (1) RO60607A (enrdf_load_stackoverflow)
YU (1) YU35181B (enrdf_load_stackoverflow)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5833532B2 (ja) * 1975-02-26 1983-07-20 キヤノン株式会社 ダイコウケイズ−ムレンズ
DE2634014C3 (de) * 1976-07-29 1981-03-26 Gewerkschaft Eisenhütte Westfalia GmbH, 4670 Lünen Schildausbaugestell
JPS53131852A (en) * 1977-04-22 1978-11-17 Nippon Chemical Ind Tele zoom lens
JPS60419A (ja) * 1984-04-20 1985-01-05 Nippon Kogaku Kk <Nikon> 望遠ズ−ムレンズ
JPH0629907B2 (ja) * 1985-08-22 1994-04-20 キヤノン株式会社 大口径比のズ−ムレンズ
CN101943016A (zh) * 2010-08-17 2011-01-12 天地科技股份有限公司 极薄煤层新型掩护式综采液压支架
CN104858007B (zh) * 2015-06-04 2017-08-18 中煤张家口煤矿机械有限责任公司 综采工作面输送卸载区电直驱齿辊式连续破碎装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1257722B (de) * 1966-02-16 1968-01-04 Hansjoachim Von Hippel Dr Ing Unter Last rueckbarer Stempelausbau
FR1503990A (fr) * 1966-10-11 1967-12-01 Bennes Marrel Perfectionnements aux piles de soutènement, notamment pour les mines ou pour les chantiers souterrains

Also Published As

Publication number Publication date
PL78410B1 (en) 1975-06-30
DE2244911A1 (de) 1973-04-05
JPS565920B2 (enrdf_load_stackoverflow) 1981-02-07
DE7233741U (de) 1982-07-15
JPS4841902A (enrdf_load_stackoverflow) 1973-06-19
BE789315A (fr) 1973-01-15
ES407051A1 (es) 1975-11-16
YU244872A (en) 1979-12-31
GB1381198A (en) 1975-01-22
DE2244911C3 (de) 1981-08-20
YU35181B (en) 1980-09-25
CS157005B2 (enrdf_load_stackoverflow) 1974-08-23
HU176912B (hu) 1981-06-28
DE2244911B2 (de) 1980-10-02
AT320565B (de) 1975-02-25

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