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Publication of BE690493ApublicationCriticalpatent/BE690493A/fr
B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated
B66F3/25—Constructional features
B66F3/30—Constructional features with positive brakes or locks
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Forms Removed On Construction Sites Or Auxiliary Members Thereof
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Dispositif de commande de la course d'un groupe de verins d'un systeme de soutenement hydraulique, en particulier pour caler les etancons d'un soutenement marchant
Verin moufle a double effet utilisable notamment pour commander les mouvements de fermeture et d'ouverture d'une porte coulissante ou basculante