BE589113A - Perfectionnements apportes aux elements de hydraulique pour . - Google Patents

Perfectionnements apportes aux elements de hydraulique pour .

Info

Publication number
BE589113A
BE589113A BE589113A BE589113A BE589113A BE 589113 A BE589113 A BE 589113A BE 589113 A BE589113 A BE 589113A BE 589113 A BE589113 A BE 589113A BE 589113 A BE589113 A BE 589113A
Authority
BE
Belgium
Prior art keywords
improvements made
hydraulic elements
hydraulic
elements
Prior art date
Application number
BE589113A
Other languages
English (en)
Original Assignee
Maschf
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 by Maschf filed Critical Maschf
Publication of BE589113A publication Critical patent/BE589113A/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D23/00—Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor
    • E21D23/08—Advancing mechanisms
    • E21D23/081—Advancing mechanisms forming parts of the roof supports
    • E21D23/087—Advancing mechanisms forming parts of the roof supports acting directly on the walls of the seam
    • E21D23/088—Advancing mechanisms forming parts of the roof supports acting directly on the walls of the seam by means of wheels, rollers, caterpillars, belts or worm screws

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Handcart (AREA)
  • Body Structure For Vehicles (AREA)
BE589113A 1959-03-28 1960-03-28 Perfectionnements apportes aux elements de hydraulique pour . BE589113A (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DEM40987A DE1092412B (de) 1959-03-28 1959-03-28 Hydraulisches Strebausbauelement
DEM40989A DE1132075B (de) 1959-03-28 1959-03-28 Hydraulisches Strebausbauelement
DEM40988A DE1092413B (de) 1959-03-28 1959-03-28 Hydraulisches Strebausbauelement

Publications (1)

Publication Number Publication Date
BE589113A true BE589113A (fr) 1960-09-28

Family

ID=7303875

Family Applications (1)

Application Number Title Priority Date Filing Date
BE589113A BE589113A (fr) 1959-03-28 1960-03-28 Perfectionnements apportes aux elements de hydraulique pour .

Country Status (2)

Country Link
BE (1) BE589113A (fr)
DE (3) DE1132075B (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1138757B (de) 1960-07-12 1962-10-31 Hoechst Ag Verfahren zur Herstellung von Olefinen
GB1206283A (en) * 1967-07-28 1970-09-23 Herbert Cotterill Ltd Improvements in or relating to mine roof supports
FR2339057A1 (fr) * 1976-01-26 1977-08-19 Charbonnages De France Support unitaire de soutenement marchant
FR2356809A1 (fr) * 1976-06-29 1978-01-27 Charbonnages De France Pile mobile de soutenement continu
DE2633799C2 (de) * 1976-07-28 1978-07-27 Halbach & Braun, 5600 Wuppertal Schreitender Schildausbau
FR2461094A1 (fr) * 1979-07-06 1981-01-30 Charbonnages De France Portique de soutenement glissant
US4432673A (en) * 1981-04-25 1984-02-21 Dowty Mining Equipment Limited Mine roof support
AT388212B (de) * 1986-07-02 1989-05-26 Voest Alpine Ag Verfahrbarer ausbaubock fuer die bruchkantensicherung

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2714505A (en) * 1948-05-01 1955-08-02 Joy Mfg Co Apparatus for mine roof control
US2677535A (en) * 1950-02-17 1954-05-04 Paul V Malloy Mine roof support beam with wall drilling end

Also Published As

Publication number Publication date
DE1132075B (de) 1962-06-28
DE1092413B (de) 1960-11-10
DE1092412B (de) 1960-11-10

Similar Documents

Publication Publication Date Title
BE589113A (fr) Perfectionnements apportes aux elements de hydraulique pour .
BE596084A (fr) Perfectionnement apporté aux vennes.
BE586629A (fr) Perfectionnements aux servo-valves hydrauliques.
FR1314577A (fr) Perfectionnements aux transmissions hydrauliques
DK103219C (da) Hydraulisk udvekslingsmekanisme.
FR1280935A (fr) Perfectionnements aux servo-mécanismes hydrauliques
BE593757A (fr) Perfectionnements aux électro-précipitateurs.
BE586636A (fr) Perfectionnements aux raccords.
FR1233544A (fr) Perfectionnements aux systèmes de relevage hydraulique
BE584092A (fr) Perfectionnements apportés aux manchons pour câbles.
BE594836A (fr) Perfectionnements aux coupleurs turbohydrauliques.
BE580013A (fr) Perfectionnements aux vannes.
FR1291697A (fr) Perfectionnements apportés aux égrappoirs pour vendanges
FR78812E (fr) Perfectionnements aux turbo-coupleurs hydrauliques
FR1247126A (fr) Perfectionnements aux essuie-glaces hydrauliques
FR1257660A (fr) Retardateur hydraulique
OA01482A (fr) Perfectionnements aux tubes-broyeurs.
BE595985A (fr) Perfectionnements aux alliages.
FR1232250A (fr) Perfectionnements aux vérins hydrauliques
OA01300A (fr) Perfectionnements aux machines de fonderie.
BE595726A (fr) Perfectionnements aux étais hydrauliques.
FR1221673A (fr) Perfectionnements aux servo-commandes hydrauliques
BE605177A (fr) Perfectionnements aux suspensions pour semi-remorques.
BE598303A (fr) Perfectionnements aux casques pour aviateurs.
BE598302A (fr) Perfectionnements aux casques pour aviateurs.