Extendable frame work vehicle having lift member movable in a true vertical fashion

An extendable frame work vehicle offering enhanced versatility, safety and effectiveness. The vehicle includes an adjustable frame with front and rear portions that extend or retract with respect to each other. The front portion is supported by a first pair of wheels and said rear portion is support...

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Bibliographische Detailangaben
Hauptverfasser:	DACK MARCUS F, PRICE, JR. THOMAS E, BUELT KENNETH, FRANCHINO DAVE, KALLSEN KENT, OSSWALD CHRIS, SEVERNS ALAN
Format:	Patent
Sprache:	eng
Schlagworte:	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 LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS LIFTING MOTOR VEHICLES PERFORMING OPERATIONS TRAILERS TRANSPORTING
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Beschreibung
Zusammenfassung:	An extendable frame work vehicle offering enhanced versatility, safety and effectiveness. The vehicle includes an adjustable frame with front and rear portions that extend or retract with respect to each other. The front portion is supported by a first pair of wheels and said rear portion is supported by a second pair of wheels. Each wheel is independently driven and steered. The vehicle also includes an engine mounted on the rear portion of the frame. Incorporated into the vehicle is an electro-hydraulic assembly which enables extension and retraction of the adjustable frame. The assembly includes a sensor-responsive microprocessor controller, at least one hydraulic pump, at least one hydraulic drive motor and at least one valve network.