FR951055A - étançon métallique - Google Patents

étançon métallique

Info

Publication number
FR951055A
FR951055A FR951055DA FR951055A FR 951055 A FR951055 A FR 951055A FR 951055D A FR951055D A FR 951055DA FR 951055 A FR951055 A FR 951055A
Authority
FR
France
Prior art keywords
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
Albert Glinne
S Felicie Mae
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 FR951055A publication Critical patent/FR951055A/fr
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH 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
    • E21D15/34—Telescopic props with parts held relatively to each other by friction or gripping by axially- moving balls, rollers, or the like
FR951055D 1946-11-18 1947-08-05 étançon métallique Expired FR951055A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE951055X 1946-11-18

Publications (1)

Publication Number Publication Date
FR951055A true FR951055A (fr) 1949-10-14

Family

ID=3889394

Family Applications (1)

Application Number Title Priority Date Filing Date
FR951055D Expired FR951055A (fr) 1946-11-18 1947-08-05 étançon métallique

Country Status (1)

Country Link
FR (1) FR951055A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2765140A (en) * 1951-12-22 1956-10-02 Gerlach Karl Pit prop

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2765140A (en) * 1951-12-22 1956-10-02 Gerlach Karl Pit prop

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