FR1056166A - Improvements to metal props - Google Patents

Improvements to metal props

Info

Publication number
FR1056166A
FR1056166A FR1056166DA FR1056166A FR 1056166 A FR1056166 A FR 1056166A FR 1056166D A FR1056166D A FR 1056166DA FR 1056166 A FR1056166 A FR 1056166A
Authority
FR
France
Prior art keywords
metal props
props
metal
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.)
Expired
Application number
Other languages
French (fr)
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.)
E DERVAUX ETS
Original Assignee
E DERVAUX ETS
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 by E DERVAUX ETS filed Critical E DERVAUX ETS
Application granted granted Critical
Publication of FR1056166A publication Critical patent/FR1056166A/en
Expired 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
    • E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
    • E21D15/42—Telescopic props with parts held relatively to each other by friction or gripping with special parts to influence the friction
    • 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
    • E21D15/28—Telescopic props with parts held relatively to each other by friction or gripping
    • E21D15/285—Telescopic props with parts held relatively to each other by friction or gripping by means of wedges or wedge combinations

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)
FR1056166D 1951-12-22 1951-12-22 Improvements to metal props Expired FR1056166A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1056166T 1951-12-22

Publications (1)

Publication Number Publication Date
FR1056166A true FR1056166A (en) 1954-02-24

Family

ID=9597320

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1056166D Expired FR1056166A (en) 1951-12-22 1951-12-22 Improvements to metal props

Country Status (1)

Country Link
FR (1) FR1056166A (en)

Similar Documents

Publication Publication Date Title
FR1068831A (en) Improvements to elongated sheet metal structures
FR1037819A (en) Improvements to shaped charges
FR1043701A (en) Improvements to electromagnets
FR1041849A (en) Improvements to removable structures
FR1046474A (en) Improvements to hoppers
FR1032140A (en) metal props
FR1065282A (en) Improvements to drumsticks
FR1056166A (en) Improvements to metal props
FR1012804A (en) Improvements to adjustable metal props
FR1043533A (en) Improvements to siphons
FR1054150A (en) Improvements to gyroscopes
FR1047071A (en) Improvements to presses
FR1068592A (en) Improvements to metal scaffolding
FR1046445A (en) Improvements to hydraulic controls
FR1037245A (en) Improvements to the props
FR1137252A (en) Improvements to shipyards
FR1063292A (en) Roof improvements
FR1038515A (en) Improvements to adjustable props
FR1070549A (en) Improvements to pumps
FR1034867A (en) Improvements to pumps
FR1061795A (en) Improvements to meters
FR1037459A (en) Improvements to dryers
FR1064641A (en) Improvement provided to the unifiers
FR1039180A (en) Improvements to defibrators
FR1031057A (en) Improvements to stylographs