Conveyor for a substrate

Claim 1

A conveyor for transporting a substrate free from contact with any stationary portions of the conveyor, comprising: a. a pair of substantially parallel track members extending from end to end of the conveyor, each of said track members having inwardly facing side members and outwardly facing side members; b. said inwardly facing side members each having guide means which contain a recess with support shelves separated by a downwardly extending longitudinal recess; c. said outwardly facing side members each having a U-shaped recess; d. a substrate support means received in said recess of said guide means and said U-shaped recess and comprising a plurality of flexibly interconnected members having projections forming cross shaped opposed horizontal and vertical legs; e. the legs of said projections being received in said guide means so that the opposed horizontal legs rest on said support shelves with the intermediate vertical leg positioned in said longitudinal recess to interfit said support means in said guide means; f. one pair of adjacent horizontal and vertical legs of said projections being adapted to support the side edges and lower edges only of the substrate so that the substrate is only supported by said projections; and g. guide plates secured to said track members adjacent said inwardly facing side members, said guide plates each having downwardly extending projections adapted to over lie the side edges of the substrate to permit limited upward movement only of the substrate.