Rail transportation system

A transport system comprising:

• a track including a substantially horizontal top surface having a vertical web extending downwardly therefrom and a canted surface extending between one edge of said horizontal surface and said web, a support surface extending angularly from the face of said web opposite said canted surface;
• and
• a transport unit mounted on said track having at least two motorized wheels rotationally supported on said unit for tracking on said support surface and at least two counterbalanced wheels rotationally supported on said unit for tracking along said canted surface, said motorized rotational support wheels being adapted for rotation about an axis perpendicular to said support surface whereby said motorized rotational wheels may be made to track upwardly or downwardly as the unit moves along said track.

A transport system comprising:

• a track including a horizontal rail having a vertical web with both said web and said rail continuous along the length thereof;
• and
• a transport unit mounted on said rail with the center of gravity offset from said web with a first rotational support pivoted on said unit between said center of gravity and said web to track along one face of said web and a second rotational support pivoted on said unit above said first support adapted with a circumferential groove therein for mating with the edge of said rail facing away from said one face of said web wherein the mating of said groove with said edge of said rail restricts vertical movement between said transport unit and said track.