FR970459A - étançon métallique pour mines - Google Patents

étançon métallique pour mines

Info

Publication number
FR970459A
FR970459A FR970459DA FR970459A FR 970459 A FR970459 A FR 970459A FR 970459D A FR970459D A FR 970459DA FR 970459 A FR970459 A FR 970459A
Authority
FR
France
Prior art keywords
mines
metal prop
prop
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
English (en)
Inventor
Heinz Hielscher
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
Application granted granted Critical
Publication of FR970459A publication Critical patent/FR970459A/fr
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
    • E21D15/16—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure
    • E21D15/20—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure with pawl, pin, cross-piece, or the like engaging with ratchet teeth, notches, holes, or the like, spaced apart at intervals
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G25/00—Shores or struts; Chocks
    • E04G25/04—Shores or struts; Chocks telescopic
    • E04G25/06—Shores or struts; Chocks telescopic with parts held together by positive means
    • E04G25/066—Shores or struts; Chocks telescopic with parts held together by positive means by a wedge

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Architecture (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Civil Engineering (AREA)
FR970459D 1948-08-09 1948-08-09 étançon métallique pour mines Expired FR970459A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR970459T 1948-08-09

Publications (1)

Publication Number Publication Date
FR970459A true FR970459A (fr) 1951-01-04

Family

ID=9505900

Family Applications (1)

Application Number Title Priority Date Filing Date
FR970459D Expired FR970459A (fr) 1948-08-09 1948-08-09 étançon métallique pour mines

Country Status (1)

Country Link
FR (1) FR970459A (fr)

Similar Documents

Publication Publication Date Title
FR994556A (fr) Rallonge métallique articulée pour mine
FR984716A (fr) étançon métallique pour mines
FR991112A (fr) Serrure pour étançons métalliques
FR970459A (fr) étançon métallique pour mines
FR1004600A (fr) étançon métallique pour mines
FR920262A (fr) étançon métallique de mine
FR978312A (fr) Tuile métallique
FR1013538A (fr) Verrou pour étançon de mine télescopique
FR997068A (fr) étançon métallique pour mines
FR968622A (fr) Pilier pour foudroyage
FR1014707A (fr) Perfectionnements aux étais extensibles pour mine
FR1098501A (fr) étançon métallique pour l'exploitation minière
FR1018770A (fr) Verrou pour étançon de mine
FR1008513A (fr) étançon de mine
FR1009846A (fr) Poteau de mine
FR1045311A (fr) étançon en acier pour mines
FR1071004A (fr) étançon en acier pour mines
FR1007950A (fr) Perfectionnements apportés aux étançons métalliques
FR1009849A (fr) étançon de mine en acier
FR969365A (fr) étançon de mine métallique
FR990000A (fr) Tuile métallique
FR946342A (fr) Perfectionnement aux étançons métalliques pour mines
FR978846A (fr) Transporteur pour mines
FR980585A (fr) Dispositif de verrouillage pour étançons métalliques de mines
FR969755A (fr) Menuiserie métallique pour fenêtres