NL248713A - - Google Patents

Info

Publication number
NL248713A
NL248713A NL248713DA NL248713A NL 248713 A NL248713 A NL 248713A NL 248713D A NL248713D A NL 248713DA NL 248713 A NL248713 A NL 248713A
Authority
NL
Netherlands
Application number
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.)
Publication of NL248713A publication Critical patent/NL248713A/xx
Priority claimed from GB618959A external-priority patent/GB901168A/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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)
  • Safety Valves (AREA)
NL248713D 1959-02-23 NL248713A (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB618959A GB901168A (en) 1959-02-23 1959-02-23 Improvements in hydraulic props or struts
GB1755159 1959-05-22

Publications (1)

Publication Number Publication Date
NL248713A true NL248713A (zh)

Family

ID=26240510

Family Applications (1)

Application Number Title Priority Date Filing Date
NL248713D NL248713A (zh) 1959-02-23

Country Status (4)

Country Link
US (1) US3000358A (zh)
DE (1) DE1145122B (zh)
FR (1) FR1249070A (zh)
NL (1) NL248713A (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1026411A (en) * 1962-05-07 1966-04-20 Lansing Bagnall Ltd Improvements in or relating to industrial trucks
GB1022469A (en) * 1964-02-11 1966-03-16 Dowty Mining Equipment Ltd Roof support assembly suitable for use in mines
US3281107A (en) * 1965-12-15 1966-10-25 Ohio Brass Co Hydraulic support prop

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1699917A (en) * 1924-11-08 1929-01-22 Jeremiah E Madden Hydraulic apparatus
US1899534A (en) * 1930-05-05 1933-02-28 Curtis Mfg Co Automobile lift
US2402265A (en) * 1945-02-15 1946-06-18 Globe Hoist Co Vehicle lift
BE486663A (zh) * 1948-01-12
GB640414A (en) * 1948-03-06 1950-07-19 Mavor & Coulson Ltd Improvements in props
DE928945C (de) * 1951-06-09 1955-06-16 Eisenwerk Wanheim G M B H Verstellbarer hydraulischer Grubenstempel
DE1044003B (de) * 1952-06-16 1958-11-20 Mining Engineering Co Ltd Hydraulische Hangendtragvorrichtung bzw. Grubenstempel
DE1020945B (de) * 1955-03-14 1957-12-19 Ewald Wiemann Maschf Setz- und Raubventil fuer hydraulische Grubenstempel
BE570316A (zh) * 1957-08-13

Also Published As

Publication number Publication date
FR1249070A (fr) 1960-12-23
DE1145122B (de) 1963-03-14
US3000358A (en) 1961-09-19

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