LU28988A1 - Etançon pour mines - Google Patents

Etançon pour mines

Info

Publication number: LU28988A1
Authority: LU; Luxembourg
Prior art keywords: mining prop; prop; mining
Prior art date: 1947-05-07

Application number

Other languages

English (en)

Inventor

Karl Gerlach

Original Assignee

Le Progres Charbonnier Prochar

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.)

1947-05-07

Filing date

1948-04-06

Publication date

1952-08-19

1948-04-06 Application filed by Le Progres Charbonnier Prochar filed Critical Le Progres Charbonnier Prochar

1952-08-19 Publication of LU28988A1 publication Critical patent/LU28988A1/fr

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
- E21D15/285—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)
Mounting, Exchange, And Manufacturing Of Dies (AREA)
Clamps And Clips (AREA)

LU28988D 1947-05-07 1948-04-06 Etançon pour mines LU28988A1 (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
BE473107A BE473107A (fr)	1947-05-07	1947-05-07	Etançon pour mines

Publications (1)

Publication Number	Publication Date
LU28988A1 true LU28988A1 (fr)	1952-08-19

Family

ID=3885121

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
LU28988D LU28988A1 (fr)	1947-05-07	1948-04-06	Etançon pour mines

Country Status (3)

Country	Link
BE (1)	BE473107A (fr)
DE (1)	DE901762C (fr)
LU (1)	LU28988A1 (fr)

1947
- 1947-05-07 BE BE473107A patent/BE473107A/fr unknown
1948
- 1948-04-06 LU LU28988D patent/LU28988A1/fr unknown
- 1948-10-02 DE DEP5066A patent/DE901762C/de not_active Expired

Also Published As

Publication number	Publication date
DE901762C (de)	1954-01-14
BE473107A (fr)	1947-06-20

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