FR908635A - étançon - Google Patents

étançon

Info

Publication number
FR908635A
FR908635A FR908635DA FR908635A FR 908635 A FR908635 A FR 908635A FR 908635D A FR908635D A FR 908635DA FR 908635 A FR908635 A FR 908635A
Authority
FR
France
Prior art keywords
prop
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
Maurice Garnier
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 FR908635A publication Critical patent/FR908635A/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

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)
FR908635D 1944-08-02 1944-08-02 étançon Expired FR908635A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR908635T 1944-08-02

Publications (1)

Publication Number Publication Date
FR908635A true FR908635A (fr) 1946-04-15

Family

ID=9407296

Family Applications (1)

Application Number Title Priority Date Filing Date
FR908635D Expired FR908635A (fr) 1944-08-02 1944-08-02 étançon

Country Status (1)

Country Link
FR (1) FR908635A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5273378A (en) * 1991-05-10 1993-12-28 Volker Merz Support column

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5273378A (en) * 1991-05-10 1993-12-28 Volker Merz Support column
ES2105932A1 (es) * 1991-05-10 1997-10-16 Volker Merz Puntal de entibacion.

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