Patent ID: 6089604
Filing Date: 2000-07-18
Classification: B64F

Abstract:
A wheeled chassis, comprising:at lease one traction bar pivotable about a horizontal axis between a substantially vertical position and a substantially horizontal towing position;at least two spaced from each other axle means for supporting each a pair of freely rotatable wheels;a driving wheel supported on the chassis; andmeans for steering the driving wheel about an upright-extending axis;wherein the freely rotatable wheels supported by one of the two axle means pivot about vertical axes;wherein the freely rotatable wheels form apexes of corners of an imaginary rectangular frame;wherein the driving wheel is located inside of the imaginary rectangular frame adjacent to a longitudinal side thereof in an offset relationship with respect to a vertical longitudinal central plane of the chassis;wherein the freely rotatable wheels, which pivot about the vertical axes, are located in a trailing relationship with respect to the driving wheel in a towing direction of the chassis; andwherein the chassis has one of a portal shape and a tunnel shape and is designed as a support for a shelter roof-forming cover.