Patent ID: 7131651
Filing Date: 2006-11-07
Classification: B60G,B62D,Y10S

Abstract:
1. A chassis with plural supporting wheels adjustable disposed for adjusting orientations of a chassis member relative to a reference orientation, comprising two lower side members, each lower side member having a pair of ends, each end of each of the two lower side members having one or more wheels or caterpillar tracks, a pair of first couplings on the two lower side members, the first couplings being disposed between front ends and rear ends of the two lower side members, the first couplings rotatable about an axis of rotation substantially transversely of a longitudinal direction of each respective lower side member, two upper side members connected to the first couplings, a pair of second couplings on each upper side member disposed at upper parts of the upper side members spaced from the lower side members, the second couplings rotatable about axes of rotation oriented in the longitudinal direction of the lower side members, and two parallel cross members coupled to the pairs of second couplings forming a parallelogram connection between the upper side members and the two cross members.