FR1263251A - Boulon à expansion - Google Patents

Boulon à expansion

Info

Publication number
FR1263251A
FR1263251A FR823728A FR823728A FR1263251A FR 1263251 A FR1263251 A FR 1263251A FR 823728 A FR823728 A FR 823728A FR 823728 A FR823728 A FR 823728A FR 1263251 A FR1263251 A FR 1263251A
Authority
FR
France
Prior art keywords
expansion bolt
bolt
expansion
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
FR823728A
Other languages
English (en)
Inventor
Jacques-Emmanuel-Hen Berte
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
Priority to FR823728A priority Critical patent/FR1263251A/fr
Application granted granted Critical
Publication of FR1263251A publication Critical patent/FR1263251A/fr
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
    • E21D21/008—Anchoring or tensioning means
FR823728A 1960-04-07 1960-04-07 Boulon à expansion Expired FR1263251A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR823728A FR1263251A (fr) 1960-04-07 1960-04-07 Boulon à expansion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR823728A FR1263251A (fr) 1960-04-07 1960-04-07 Boulon à expansion

Publications (1)

Publication Number Publication Date
FR1263251A true FR1263251A (fr) 1961-06-09

Family

ID=8728874

Family Applications (1)

Application Number Title Priority Date Filing Date
FR823728A Expired FR1263251A (fr) 1960-04-07 1960-04-07 Boulon à expansion

Country Status (1)

Country Link
FR (1) FR1263251A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105350995A (zh) * 2015-12-03 2016-02-24 安徽理工大学 一种三角式部分可回收组合注浆锚杆结构

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105350995A (zh) * 2015-12-03 2016-02-24 安徽理工大学 一种三角式部分可回收组合注浆锚杆结构

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