BE494572A - - Google Patents

Info

Publication number
BE494572A
BE494572A BE494572DA BE494572A BE 494572 A BE494572 A BE 494572A BE 494572D A BE494572D A BE 494572DA BE 494572 A BE494572 A BE 494572A
Authority
BE
Belgium
Prior art keywords
emi
prop
chamber
cylinder
piston
Prior art date
Application number
Other languages
English (en)
French (fr)
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.)
Publication of BE494572A publication Critical patent/BE494572A/fr

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
    • E21D15/50—Component parts or details of props
    • E21D15/52—Extensible units located above or below standard props
    • E21D15/523—Extensible units located above or below standard props with hydraulic or pneumatic control
    • 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
    • E21D15/44—Hydraulic, pneumatic, or hydraulic-pneumatic props

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)
  • Portable Nailing Machines And Staplers (AREA)
  • Safety Valves (AREA)
BE494572D 1949-12-08 BE494572A (is")

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DER512A DE813542C (de) 1949-12-08 1949-12-08 Hydraulischer Grubenstempel mit einstellbarem Verformungsschutz

Publications (1)

Publication Number Publication Date
BE494572A true BE494572A (is")

Family

ID=7395143

Family Applications (1)

Application Number Title Priority Date Filing Date
BE494572D BE494572A (is") 1949-12-08

Country Status (3)

Country Link
BE (1) BE494572A (is")
DE (1) DE813542C (is")
FR (1) FR1012668A (is")

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE971740C (de) * 1951-04-28 1959-03-19 Ringfeder Gmbh Grubenstempel
DE1043251B (de) * 1955-06-24 1958-11-13 Hemscheidt Maschf Hermann Grubenausbaustempel
DE1010033B (de) * 1956-03-16 1957-06-13 Eisenwerk Wanheim G M B H Vorrichtung zum Abstreifen von Schmutz an Grubenstempeln
BE559110A (is") * 1956-07-11
NL229755A (is") * 1957-07-20

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE621526C (de) * 1933-02-10 1935-11-08 Hugo Schramm Aus zwei ineinanderverschiebbaren Teilen bestehender nachgiebiger Grubenstempel
DE640845C (de) * 1935-05-27 1937-01-13 Wilhelm Fehlemann Nachgiebiger Grubenstempel

Also Published As

Publication number Publication date
DE813542C (de) 1951-09-13
FR1012668A (fr) 1952-07-16

Similar Documents

Publication Publication Date Title
BE494572A (is")
CN102758427B (zh) 一种加压振冲方法及其中使用的具有底部出料设备的加压振冲装置
EP0603181A1 (fr) Systeme d'extinction des puits de petrole soumis a de tres fortes pressions
FR2616464A1 (fr) Caisson pour constructions hydrotechniques
NO20030221D0 (no) Undervannsverktöy
FR2555212A3 (fr) Dispositif pour la reparation sous l'eau de fuites dans des murs de quai, murs de barrage, murs en beton et similaires
MA59844B1 (fr) Dispositif pour alimenter en eau au moins une plante notamment potagere et installation comportant au moins un tel dispositif
US1148982A (en) Hydraulic ram.
NO953407L (no) Paternosterverk
NO20022571L (no) Anordning for mating av bindemateriale
BE1003789A3 (fr) Procede et dispositif de mise au sec d'un chantier a l'air libre sur une berge.
US6722664B2 (en) Seal system for covers/flange couplings under high pressure
RU2007531C1 (ru) Способ транспортирования гидросмеси земснарядом
US496344A (en) collins
FR2534888A1 (fr) Antivol a flotteur spherique associe au collecteur de remplissage d'un reservoir
CH428340A (fr) Pipeline de sécurité
KR100404494B1 (ko) 터널 공사 시 암반 굴착용 냉각수와 압축공기의 공급을병용하는 파이프 장치
BE664595A (is")
FR2900944A3 (fr) Dispositif permettant d'eviter les risques d'inondations et d'ameliorer l'alimentation en eau des nappes phreatiques
JPS57187416A (en) Construction work of sand pile
BE507031A (is")
WO2004106803A3 (en) Subsea pipeline insertion shoe
US544460A (en) Burtis c
CH689428A5 (fr) Dispositif de fixation amovible pour coudes plongeurs.
AU2003220711B2 (en) Sand Spears