LIFTING APPARATUS AND METHOD OF LIFTING

A collapsible and mobile lifting apparatus. The apparatus includes a mobile base, a lifting mechanism mounted to the mobile base, suspension members extending from the lifting mechanism for operatively engaging an object to be lifted, and a counterweight system that is automatically moveable relativ...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	OBERST KYLE L, TALUS ZACHARY D, BIONDICH KYLE STEVEN, HANSEN BRIAN M
Format:	Patent
Sprache:	eng
Schlagworte:	CRANES HAULING HOISTING HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDEDFOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCEDIRECTLY TO THE SURFACE OF A LOAD LIFTING LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS,WINCHES, OR TACKLES PERFORMING OPERATIONS TRANSPORTING
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Beschreibung
Zusammenfassung:	A collapsible and mobile lifting apparatus. The apparatus includes a mobile base, a lifting mechanism mounted to the mobile base, suspension members extending from the lifting mechanism for operatively engaging an object to be lifted, and a counterweight system that is automatically moveable relative to the mobile base. Helical band actuators provide the lifting force. A lower counterweight at the base is moveable to variable positions in response to the load of an object on the suspension members. An upper counterweight is mounted proximate to the upper end of the lifting mechanism to resist the load on the suspension members as well. A tension cable extending from the base proximate to the upper end of the lifting mechanism provides additional force to balance the load of the object.