Patent ID: 6877439
Filing Date: 2005-04-12
Classification: B61B

Abstract:
1. A transportation system, comprising: a plurality of substantially upright supports, a longitudinal beam elevated by said supports, a plurality of cabs adapted to move along said beam, said cabs being suspended from the beam so that the centre of mass of the cabs is below the beam, and a first rail element and a second rail element, the first rail element being disposed along a first surface of the beam, and the second rail element being disposed along a second surface of the beam, the second surface being oriented to be substantially parallel to and oppositely facing with respect to the first surface, wherein the first rail element is adapted to support at least one of said cabs moveable in an opposite direction to at least a second one of said cabs supported by the second rail element, said beam including a central body, wherein each of said rail elements project out from the central body of said beam, and wherein a single upright support only is required to support one point of the beam.