Patent ID: 7503450

Claim:
A slip roller conveyor module comprising: (a) a frame including a pair of parallel, spaced-apart side plates extending a length dimension of said module; (b) a plurality of slip rollers extending between the side plates in parallel, spaced-apart relation to one another, each of the slip rollers comprising (i) a pair of annular pulleys, each of a first outer diameter and each with a concentric tubular sleeve projecting outward from one side surface of said pulleys, said sleeves having a second outer diameter that is less than the first outer diameter; (ii) a pair of axle members extending individually through the tubular sleeves and the annular pulleys and affixed to said side plates; (iii) a tubular roller extending between an opposed pair of annular pulleys rotationally secured on the pair of side plates by the axle members and having an internal diameter for surrounding the tubular sleeves thereof with a predetermined clearance fit there between; (c) a first endless belt for engaging the pulleys affixed to the first of said pair of side plates and a second endless belt for engaging the pulleys affixed to the second of said pair of side plates; and (d) means for driving said first and second endless belts at the same speed and in the same direction.