A jacking device includes a base member, an upper member, and, at least one intermediate member. Each member includes screw threads adapted to engage a respective screw thread of an adjacent member. Drive means is included to permit movement of the members, and to thereby raise or lower an upper surface of the jacking device. The intermediate member may rotate as the drive means operates, but the upper and lower surfaces are preferably prevented from undergoing rotational movement. A plurality of such jacking devices may be operated simultaneously to raise or lower a load or other object.


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    Titel :

    JACKING DEVICE


    Beteiligte:

    Erscheinungsdatum :

    25.06.2015


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    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 , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last



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