FR1222473A - Valve and its applications to mine props - Google Patents

Valve and its applications to mine props

Info

Publication number
FR1222473A
FR1222473A FR776467A FR776467A FR1222473A FR 1222473 A FR1222473 A FR 1222473A FR 776467 A FR776467 A FR 776467A FR 776467 A FR776467 A FR 776467A FR 1222473 A FR1222473 A FR 1222473A
Authority
FR
France
Prior art keywords
valve
applications
mine props
props
mine
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
FR776467A
Other languages
French (fr)
Inventor
Oskar Noe
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 FR1222473A publication Critical patent/FR1222473A/en
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
    • E21D15/50—Component parts or details of props
    • E21D15/51—Component parts or details of props specially adapted to hydraulic, pneumatic, or hydraulic-pneumatic props, e.g. arrangements of relief valves
    • E21D15/512—Arrangement of valves
FR776467A 1957-10-25 1958-10-11 Valve and its applications to mine props Expired FR1222473A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1222473X 1957-10-25

Publications (1)

Publication Number Publication Date
FR1222473A true FR1222473A (en) 1960-06-10

Family

ID=7734194

Family Applications (1)

Application Number Title Priority Date Filing Date
FR776467A Expired FR1222473A (en) 1957-10-25 1958-10-11 Valve and its applications to mine props

Country Status (1)

Country Link
FR (1) FR1222473A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4936714A (en) * 1988-03-03 1990-06-26 Gewerkschaft Eisenhutte Westfalia Gmbh Valve devices for use with mining equipment
US4998558A (en) * 1988-08-22 1991-03-12 Solomon Fred D Solar water heating system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4936714A (en) * 1988-03-03 1990-06-26 Gewerkschaft Eisenhutte Westfalia Gmbh Valve devices for use with mining equipment
US4998558A (en) * 1988-08-22 1991-03-12 Solomon Fred D Solar water heating system

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