BE507997A - - Google Patents

Info

Publication number
BE507997A
BE507997A BE507997DA BE507997A BE 507997 A BE507997 A BE 507997A BE 507997D A BE507997D A BE 507997DA BE 507997 A BE507997 A BE 507997A
Authority
BE
Belgium
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 BE507997A publication Critical patent/BE507997A/xx

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/50Component parts or details of props
    • E21D15/51Component parts or details of props specially adapted to hydraulic, pneumatic, or hydraulic-pneumatic props, e.g. arrangements of relief valves
    • E21D15/515Particular fluids not covered by any chemical subdivision
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/14Telescopic props
    • E21D15/28Telescopic props with parts held relatively to each other by friction or gripping
    • E21D15/30Telescopic props with parts held relatively to each other by friction or gripping by means expanded or contracted by pressure applied through the medium of a fluid or quasi- fluid, e.g. rubber
    • E21D15/306Telescopic props with parts held relatively to each other by friction or gripping by means expanded or contracted by pressure applied through the medium of a fluid or quasi- fluid, e.g. rubber by means of a liquid
    • EFIXED CONSTRUCTIONS
    • E21EARTH OR ROCK DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D15/00Props; Chocks, e.g. made of flexible containers filled with backfilling material
    • E21D15/14Telescopic props
    • E21D15/44Hydraulic, 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)
  • Fluid-Pressure Circuits (AREA)
BE507997D 1951-01-09 BE507997A (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE747251X 1951-01-09

Publications (1)

Publication Number Publication Date
BE507997A true BE507997A (de)

Family

ID=6648590

Family Applications (1)

Application Number Title Priority Date Filing Date
BE507997D BE507997A (de) 1951-01-09

Country Status (4)

Country Link
BE (1) BE507997A (de)
FR (1) FR1060827A (de)
GB (1) GB747251A (de)
NL (1) NL166402B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2928643A (en) * 1953-02-21 1960-03-15 Bellmann Eugen Prop-type supporting device
US2938699A (en) * 1953-01-15 1960-05-31 Bellmann Emma Elfriede Prop-type supporting devices

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2938699A (en) * 1953-01-15 1960-05-31 Bellmann Emma Elfriede Prop-type supporting devices
US2928643A (en) * 1953-02-21 1960-03-15 Bellmann Eugen Prop-type supporting device

Also Published As

Publication number Publication date
FR1060827A (fr) 1954-04-06
GB747251A (en) 1956-03-28
NL166402B (nl)

Similar Documents

Publication Publication Date Title
FR972052A (de)
FR994768A (de)
NL105527C (de)
NL75656C (de)
BE501312A (de)
BE501201A (de)
BE501709A (de)
BE501710A (de)
BE501200A (de)
BE501183A (de)
BE501787A (de)
BE501126A (de)
BE501021A (de)
BE502010A (de)
BE502062A (de)
BE502089A (de)
BE500996A (de)
BE500995A (de)
BE480026A (de)
BE505417A (de)
BE501573A (de)
BE509312A (de)
BE500989A (de)
BE510712A (de)
BE500841A (de)