NL295875A - - Google Patents

Info

Publication number
NL295875A
NL295875A NL295875DA NL295875A NL 295875 A NL295875 A NL 295875A NL 295875D A NL295875D A NL 295875DA NL 295875 A NL295875 A NL 295875A
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 NL295875A publication Critical patent/NL295875A/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
    • E21D15/45—Hydraulic, pneumatic, or hydraulic-pneumatic props having closed fluid system, e.g. with built-in pumps or accumulators

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)
  • Details Of Reciprocating Pumps (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
NL295875D 1962-07-31 NL295875A (enrdf_load_html_response)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB29288/62A GB1030574A (en) 1962-07-31 1962-07-31 Improvements in or relating to hydraulic props

Publications (1)

Publication Number Publication Date
NL295875A true NL295875A (enrdf_load_html_response)

Family

ID=10289161

Family Applications (1)

Application Number Title Priority Date Filing Date
NL295875D NL295875A (enrdf_load_html_response) 1962-07-31

Country Status (4)

Country Link
US (1) US3180093A (enrdf_load_html_response)
BE (1) BE634933A (enrdf_load_html_response)
GB (1) GB1030574A (enrdf_load_html_response)
NL (1) NL295875A (enrdf_load_html_response)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1086532A (en) * 1964-01-18 1967-10-11 Dobson Ltd W E & F Improvements in and relating to hydraulic mine roof supports

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US686183A (en) * 1899-05-22 1901-11-05 Jay W Watkins Fire-extinguisher.
US1212757A (en) * 1914-11-05 1917-01-16 Carl A Waldron Hydraulic jack.
US1344919A (en) * 1919-05-05 1920-06-29 Alexander W Marr Hydraulic jack
GB902188A (en) * 1960-04-09 1962-07-25 Mastabar Mining Equip Co Ltd Improvements in or relating to hydraulic supports

Also Published As

Publication number Publication date
BE634933A (enrdf_load_html_response)
GB1030574A (en) 1966-05-25
US3180093A (en) 1965-04-27

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